| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 455226200 | Signal strength | 87 |
| 20080200138 | Interference variance estimation for signal detection - The present invention relates to a method, apparatus, and computer program product, wherein a level of a first signal received via first channel is determined. Additionally, a moving average of a plurality of determined levels of the first signal is obtained, and the moving average is subtracted from the determined level. The subtraction result is then used for estimating a noise variance of a second signal received via a second channel. | 08-21-2008 |
| 20080242248 | Fm Receiver - An FM receiver which can be used by being switched between stereophonic and monophonic, and comprises detecting unit for detecting a received signal, two routes over which a detected signal is transmitted to an output buffer, and a switching unit for selecting either one of the two routes. The two routes consist of a route passing through a stereophonic demodulator unit and a route bypassing the stereophonic demodulator unit; and the switching unit selects either one of the two routes based on a control signal indicating the selection of either one of stereophonic and monophonic, and, when the route bypassing the stereophonic demodulator unit is selected, turns off power supply to the stereophonic demodulator unit based on the above control signal. | 10-02-2008 |
| 20080299927 | SIGNAL STRENGTH INDICATION METHODS FOR USE IN WIRELESS COMMUNICATION DEVICES - Embodiments include signal strength indication methods for use in wireless communication devices. In an embodiment, a method includes producing a default received signal strength indicator (RSSI) using default RSSI determination parameters. The method also includes determining that a received signal strength is inadequate, and producing an alternate RSSI, in response, where the alternate RSSI is produced using at least one alternate RSSI determination parameter that is different from at least one default RSSI determination parameter. In another embodiment, a method includes measuring multiple received signal strengths for multiple received signals from multiple base stations, and producing an alternate RSSI based on a received signal strength measurement for a strongest signal of the multiple received signals. An embodiment of a wireless communication device may include a processing subsystem adapted to perform embodiments of the methods. | 12-04-2008 |
| 20080311871 | SYSTEM FOR DETERMINING TOTAL ISOTROPIC SENSITIVITY (TIS) USING TARGET RECEIVED SIGNAL STRENGTH INDICATOR (RSSI) VALUE AND RELATED METHODS - A test method is for determining total isotropic sensitivity (TIS) of a mobile wireless communications device using an RF source controllable to a plurality of source values having a relatively small uncertainty associated therewith. The mobile wireless communications device may includes an antenna and a RF receiver coupled to the antenna and outputting an RSSI value having a relatively large uncertainty associated therewith. The method may include measuring a sensitivity of the RF receiver, and measuring an antenna gain pattern for the antenna based upon controlling the RF source to respective source values causing the RE receiver to generate a same target RSSI value as the RF source and wireless communications device are angularly moved relative to one another to thereby reduce the relatively large uncertainty of the RSSI value. The TIS may be determined based upon the measured sensitivity of the RF receiver and the measured antenna gain pattern. | 12-18-2008 |
| 20090023410 | Location awareness of devices - A method for managing devices is described. The method includes receiving wireless fingerprints from a plurality of devices, each of the wireless fingerprints comprising a unique device identifier, a wireless signal strength indicator that corresponds to a relative position a device is located with respect to one or more wireless access points and unique identifiers associated with the access points. The method further includes identifying a similarity between a first wireless fingerprint associated with a first of the plurality of devices and a second wireless fingerprint associated with a second of the plurality of devices and determining the first device is located physically close to the second device based on the similarity. | 01-22-2009 |
| 20090131004 | RECEIVER WITH SIGMA-DELTA STRUCTURE - There is provided a receiver with a sigma-delta structure, the receiver including: a low noise amplifier amplifying a received signal according to a detection signal; a mixer converting an RF signal of the low noise amplifier into an IF signal; a sigma-delta A/D converter converting the IF signal from the mixer | 05-21-2009 |
| 20090131005 | Wireless terminal and level measurement method - A wireless terminal using switchable first and second reception antennas to perform diversity reception of data transmitted from a base station is proposed. The terminal includes an average value calculation unit that calculates an average value of a reception level measurement result of the first reception antenna and a reception level measurement result of the second reception antenna; and a correction unit that corrects the average value calculated on the basis of a predetermined thermal noise level, a received RSSI value measurement result of the first reception antenna, and a received RSSI value measurement result of the second reception antenna. | 05-21-2009 |
| 20090156147 | METHOD AND SYSTEM FOR ON-DEMAND RECEIVER SUPPLY VOLTAGE AND CURRENT - Aspects of a method and system for on-demand receiver supply voltage and current are provided. In this regard, strength of a signal received by one or more antennas may be measured and a voltage and/or current supplied to one or more of a LNA, a filter, a mixer and/or a data converter within said receiver may be varied based on the measured signal strength. The voltage and/or current may be varied based on signal strength of in-band and/or out-of-band signals. In this regard, the voltage and/or current may be increased when measured signal strength is above a threshold and decreased when the signal strength is below a threshold. The voltage and/or current may be controlled via a bias voltage determined based on the measurement. Similarly, the voltage and/or current may be controlled via a periodic signal with frequency and/or duty cycle determined based on the measurement. | 06-18-2009 |
| 20090156148 | LINK ADAPTATION METHOD AND APPARATUS IN WIRELESS COMMUNICATION SYSTEM - Provided is a link adaptation method and apparatus in wireless communication system. The method, includes: amplifying a received signal; converting the amplified signal into a digital signal; calculating digital signal strength; and calculating the received signal strength based on the digital signal strength and a gain of said amplifying a received signal. | 06-18-2009 |
| 20090197554 | System And Method For Station Detection And Seek In A Radio Receiver - A system for detecting a broadcast channel in a radio receiver includes a receive signal strength indicator (RSSI) element configured to develop an RSSI signal that is representative of a power in a desired channel, a switchable bandwidth channel select filter having a power detector configured to compare a power output of the desired channel and at least one channel adjacent to the desired channel to develop a signal to adjacent channel power ratio (SACPR) signal that is representative of the noise in the desired channel, and a seek element configured to determine whether the RSSI signal is greater than a predetermined RSSI threshold and configured to determine whether the SACPR signal is greater than a predetermined SACPR threshold. | 08-06-2009 |
| 20090197555 | Signal Power Measurement Methods and Apparatus - Methods and apparatus in a receiver for estimating a received power of at least one signal having a pattern known to the receiver, the signal having being transmitted by at least one antenna. A method includes using a first method of measuring the received power based on the pattern, the first method generating a first sequence of first power estimates; determining whether a predetermined first event has occurred; and if the first event has occurred, changing to a second method of measuring the received power, the second method being different from the first method and generating a second sequence of second power estimates. | 08-06-2009 |
| 20090203338 | SELECTIVE FAST IMAGE REJECTION - Selective fast image rejection. Selective down conversion processing is performed on a received signal based on the signal strength of that received signal. As few as two possible down conversion frequencies can be employed so that the received signal is down converted either to a first down converted signal having a first intermediate frequency or to a second down converted signal having a second intermediate frequency. If desired, the received signal can either be down converted using low side injection or high side injection down conversion processing. Alternatively, a larger number of possible down conversion frequencies so that the received signal is down converted to one of the possible down conversion frequencies based on the signal strength of the received signal. | 08-13-2009 |
| 20090239490 | CARRIER SIGNAL DETECTION - A method of detecting a carrier signal includes generating a first signal that represents a strength of a received signal. A variable threshold signal is generated based on the first signal. A fixed threshold signal is generated. The method includes detecting whether a carrier signal is present in the received signal based on a comparison of the first signal with a sum of the variable threshold signal and the fixed threshold signal. | 09-24-2009 |
| 20090247103 | SMOOTHING FILTER FOR IRREGULAR UPDATE INTERVALS - A technique for determining a received signal strength from multiple messages filters noise from the received signal to provide an accurate signal strength value. Advantageously, the more accurate output signal strength value can be used to identify movement of a station as well as estimate locations and direction of movement. | 10-01-2009 |
| 20090280764 | Method And System For On-Demand Linearity In A Receiver - Aspects of a method and system for on-demand linearity in a receiver are provided. In this regard, in a receiver such as on-chip receiver, a strength of a signal received by one or more antennas may be measured and linearity of the receiver may be controlled in response to the measured signal strength. The linearity may be controlled based on signal strength of in-band and/or out-of-band signals and by configuring component(s) of the receiver. Exemplary components may comprise one or more filter, amplifier, mixer, analog-to-digital converter, feedback loop, and equalizer and/or post corrector. Linearity may be increased, by switching one or more feedback loops and/or an equalizers and/or post correctors into a signal path of the receiver. Power consumption may be decreased, at the expense of reduced linearity, by switching one or more feedback loops and/or an equalizers and/or post correctors out of a signal path of the receiver. | 11-12-2009 |
| 20090280765 | Method And System For On-Demand Filtering In A Receiver - Aspects of a method and system for on-demand filtering in a receiver. In this regard, one or more filters in a receiver may be configured based on measurement and/or characterization of a signal received by the receiver and based on power consumption of the filters. In this regard, the filters may be configured based on a strength of in-band and/or out-of-band signals, and signal to noise ratio of a signal, and/or a dynamic range of a signal. The filters may be configured by switching one or more stages and/or components into and/or out of a signal path. In this manner, a trade off may be made between filter response and power consumption by powering down portions of a filter not in use. Additionally, the filters may be configured by tuning one or more variable elements within the filters. | 11-12-2009 |
| 20090311985 | SUBSAMPLING WIDEBAND RSSI CIRCUIT - A Received Signal Strength Indicator (RSSI) circuit includes a subsampling circuit that processes an input signal comprising a sampling frequency, fs, wherein the subsampling circuit subsamples the input signal, wherein the input signal is subsampled to concentrate a power in a narrow bandwidth; an analog-to-digital converter (ADC) operatively connected to the subsampling circuit, wherein the ADC digitizes the subsampled signal; and a baseband detector operatively connected to the ADC, wherein the baseband detector detects a power from the digitized subsampled signal and creates an output signal. The subsampling circuit and the ADC may operate as a single subsampling ADC. The RSSI circuit may further comprise ignoring higher order aliases at a multiple of the sampling frequency if the baseband detector is clocked at the sampling frequency. | 12-17-2009 |
| 20100003939 | METHODS AND APPARATUS FOR CALIBRATING RECEIVED SIGNAL STRENGTH INDICATORS - This disclosure discloses methods and apparatus for calibrating received signal strength indicators. | 01-07-2010 |
| 20100029235 | Co-channel interference detector - A receiver searches for and identifies the locations of narrowband interference by sweeping across a wideband frequency channel to measure power levels of at least three narrowband frequency regions and determines if at least one interfering signal is present as a function of the measured power levels. | 02-04-2010 |
| 20100029236 | RECEIVING APPARATUS, TRANSMITTING APPARATUS AND TRANSMITTING/RECEIVING SYSTEM - A receiving apparatus is for selecting and receiving a radio signal in a frame structure having an information body part including at least information body and an additional part including information for receiving field intensity measurement by using a plurality of antennas. The apparatus includes a controller that measures a receiving field intensity of not a first antenna which has received the information body in a transmission period of the additional part in a current frame but a second antenna, and measures a receiving field intensity of the first antenna in a transmission period of the information body part in the current frame, and if the receiving field intensity of the second antenna exceeds the receiving field intensity of the first antenna, selects and changes to the second antenna as the first antenna of a next frame. | 02-04-2010 |
| 20100130151 | CHANNEL CHARACTERISTIC ANALYZING APPARATUS AND METHOD - A channel characteristic analyzing apparatus that can ensure modeling of a more adequate propagation path by processing position parameters needed in a two-wave model which is used as a line-of-sight propagation path model in a stochastic manner is provided. The channel characteristic analyzing apparatus for analyzing the propagation channel characteristics of a reception apparatus | 05-27-2010 |
| 20100130152 | AUTOMATIC BANDWIDTH CONTROL WITH HIGH-DEVIATION DETECTION - A signal processing system and methods for controlling a bandwidth of the signal processing system are disclosed. One method includes the steps of detecting a presence of an adjacent signal on at one adjacent channel relative to a desired channel, detecting a modulation characteristic of the desired channel, measuring a signal strength on the at least one adjacent channel, measuring a signal strength on the desired channel, and adjusting a bandwidth filter applied to the desired channel in response to the measurements and detection steps. | 05-27-2010 |
| 20100136938 | METHOD FOR IMPLEMENTING CONTINUOUS RADIO FREQUENCY (RF) ALIGNMENT IN ADVANCED ELECTRONIC WARFARE (EW) SIGNAL STIMULATION SYSTEMS - A method for using a “B” channel of a dual channel measurement receiver as a transfer standard for power measurement, which may include in an exemplary embodiment: correlating measurements made with an “A” channel to measurements made with an RF Power Meter on one RF signal source, so that readings from the “A” channel are aligned to the RF Power Meter; aligning the “B” Channel to the “A” Channel (Transfer alignment of Channel B to the RF Power Meter), once the “A” channel has been aligned to read the same as the RF Power Meter; and using the “B” Channel as a transfer standard to measure all remaining RF signal sources in the system, on a time-line much faster than may be accomplished using a power meter. | 06-03-2010 |
| 20100151807 | FM SIGNAL QUALITY MEASUREMENT - A signal quality estimator for estimating the quality of signal reception in a signal receiver, the signal quality estimator comprising: a first filter for filtering a signal received by the receiver to isolate a frequency band therein; and a signal analyzer for forming an indication of the degree to which the amplitude of the signal in that frequency band varies over time, to serve as an estimate of the quality of signal reception in the receiver. | 06-17-2010 |
| 20100167675 | DEVICE, METHOD AND SYSTEM FOR ALIGNING AN ANTENNA - The present invention relates to a communication transmission field, and particularly provides a device, a method, and a system for aligning an antenna. The method includes steps as follows. An input signal is received, and a receiver signal strength indication (RSSI) value is output according to a strength of the input signal. The RSSI value is received, and a practically received power value corresponding to the input signal is acquired by looking up a corresponding table between the RSSI and power. An antenna rotation signal and an alignment indication signal are output. The antenna is adjusted according to the antenna rotation signal so as to change a receiving angle of the antenna. Then, it is displayed that the antenna is aligned according to the alignment indication signal. In the present invention, the man-made operation errors are reduced, thus the network quality is effectively ensured. | 07-01-2010 |
| 20100167676 | FILTERING APPARATUS AND METHOD USING REFERENCE FEEDBACK CIRCUIT OF WIRELESS COMMUNICATION SYSTEM - A filtering apparatus and method using a reference feedback circuit is disclosed. The filtering apparatus includes an input signal generating unit, a reference feedback unit, and a band-pass filter. The input signal generating unit generates an input signal in an allocated band that the receiver uses. The reference feedback unit compares the power of the input signal with that of an output signal and generates a reference signal. The output signal is generated as a band-pass filter filters the input signal with respect to the allocated band. The band-pass filter adjusts the quality factor (Q factor) of a receiver according to the reference signal and passes frequencies of the input signal input to the receiver only within the allocated band. | 07-01-2010 |
| 20100197260 | SIGNAL POWER ESTIMATION - Two versions of the auto-covariance matrix of a received signal are obtained. One version is dependent upon the fraction of the power of a transmission site that goes into the wanted signals and a value is sought for this fraction that produces a good match between the two versions. | 08-05-2010 |
| 20100210231 | COMPENSATION METHOD OF RADIO FREQUENCY MODULE PERFORMANCE AND RADIO FREQUENCY MODULE - A compensation method for radio frequency module performance, said radio frequency module is provided with a radio frequency input power detection circuit, a radio frequency output power detection circuit, a module monitoring circuit, a power amplification circuit and a radio frequency digital controlled attenuator. The soft program running in the processor of the module monitoring circuit adjusts parameters of the radio frequency module according to querying predefined compensation table or according to the compensation data calculated based on predefined formula/algorithm, thus reducing influence of ambient temperature to linearity, gain, radio frequency power detection accuracy of the radio frequency module, as well as avoiding gain decrease of the radio frequency module. Moreover, a radio frequency module improved by such method is also provided. As said structure of above mentioned method is employed by the radio frequency module, monitoring method according to this structure is able to automatically debugging and testing by using tools such as computer, thus improving the production efficiency. | 08-19-2010 |
| 20100279639 | LOW POWER RF CONTROL SYSTEM - A low power rf control system includes a controller that operates at a low clock speed when an associated rf receiver is deenergized and a high clock speed when the controller energizes the receiver. The receiver can be on for a short period, off for a short period when no preamble pulses from a remote control device are received, on for a short period, and then off for a longer period until the next cycle. The receiver remains on to process a command signal when a preamble signal is detected. A DC-DC down converter can be used as a power supply for the receiver, and a SAW resonant circuit can be used as an IF oscillator for the receiver. An LC filter can be associated with the receiver for filtering the IF signal. | 11-04-2010 |
| 20100291892 | METHOD FOR OBTAINING FIELD STRENGTH INFORMATION - A method for obtaining field strength information from a received electromagnetic signal by a receiver unit is provided, whereby an input voltage for an operational amplifier is generated from the received signal in the receiver unit by means of an input resistance realized as a voltage divider circuit and an output voltage is generated by the operational amplifier by means of a fixed amplification factor. The input voltage is changed until the output voltage lies within a predefined interval that includes the value of the reference voltage. The input voltage is tapped at the voltage divider circuit and, to change the input voltage at the voltage divider circuit, which has a plurality of divider nodes and a constant resistance value, a divider node is selected and a partial voltage is tapped. The field strength value received by the receiver unit is determined from a comparison of a quantity assigned to the selected divider node. | 11-18-2010 |
| 20100311373 | RECEIVED SIGNAL TO NOISE INDICATOR - A method and device may be used to produce a received interference value in wireless communications. A wireless transmit/receive unit comprising a radio frequency signal measurement device may be configured to produce a value indicating a radio frequency signal, noise and interference received power. An average noise plus interference measuring device may be configured to produce a value indicating a measured average noise plus interference metric. A received signal to noise indication calculation device may be configured to calculate a received signal to noise indicator from the value indicating a radio frequency signal, noise and interference received power and the value may indicate a measured average noise plus interference metric. | 12-09-2010 |
| 20100330943 | METHODS FOR MEASURING RECEIVED SIGNAL STRENGTH INDICATION, MEASUREMENT DEVICES, AND RADIO COMMUNICATION DEVICE - In various embodiments, a method for measuring Received Signal Strength Indication is provided. The method may include carrying out a first partial Received Signal Strength Indication measurement for a plurality of mobile radio base stations, selecting at least one mobile radio base station out of the plurality of mobile radio base stations based on the result of the first partial Received Signal Strength Indication measurement for a second partial Received Signal Strength Indication measurement, and carrying out the second partial Received Signal Strength Indication measurement for the selected at least one mobile radio base station. | 12-30-2010 |
| 20110039507 | WIRELESS TERMINAL AND RETRANSMISSION METHOD - A wireless terminal capable of securing the number of station units capable of simultaneous communication with one unit of access point, reducing power consumption, and ensuring stable communication quality. In the wireless terminal ( | 02-17-2011 |
| 20110070855 | SYSTEM AND METHOD FOR MAST VIBRATION COMPENSATION - The present invention relates to a system for mast vibration compensation implemented in a communication system including a first node and a second node. The first node comprises a first adaptive antenna mounted in a mast; a receiver connected to said antenna; and a spatial and temporary processing system. The first adaptive antenna is controlled by a first correction signal generated in the spatial and temporary processing system. The correction signal is based on a parameter that indicates that a radio link alignment with a second node is degrading due to mechanical vibrations in the mast. The invention also relates to a method for mast vibration compensation. | 03-24-2011 |
| 20110076976 | RADIO FREQUENCY RECEIVER, WIRELESS COMMUNICATION UNIT AND METHOD OF OPERATION - A wireless communication unit ( | 03-31-2011 |
| 20110105070 | Direct conversion receiver architecture - A direct downconversion receiver architecture having a DC loop to remove DC offset from the signal components, a digital variable gain amplifier (DVGA) to provide a range of gains, an automatic gain control (AGC) loop to provide gain control for the DVGA and RF/analog circuitry, and a serial bus interface (SBI) unit to provide controls for the RF/analog circuitry via a serial bus. The DVGA may be advantageously designed and located as described herein. The operating mode of the VGA loop may be selected based on the operating mode of the DC loop, since these two loops interact with one another. The duration of time the DC loop is operated in an acquisition mode may be selected to be inversely proportional to the DC loop bandwidth in the acquisition mode. The controls for some or all of the RF/analog circuitry may be provided via the serial bus. | 05-05-2011 |
| 20110111715 | OUTDOOR UNIT INSTALLATION AID FEATURE - In an exemplary embodiment, an outdoor unit of an antenna system includes an audio device that generates a sound that aids in the aiming of the antenna system. The sound is based on the strength of the received signal. Furthermore, in an exemplary embodiment, the sound indicates the signal strength using tone, pitch, repetition, volume, and the like. This sound can be used by a person to aim an antenna system in order to receive a better signal. The person installing the antenna system can be a professional installer, a layperson, or the consumer because the installer does not require any special skills or equipment. | 05-12-2011 |
| 20110117867 | RECEIVED SIGNAL STRENGTH INDICATOR APPARATUS AND METHOD - Received signal strength indicator apparatus and methods are disclosed. A received signal strength indicator includes a modem, a display, a processor, and a step-up converter. The modem is configured to receive a signal. The processor is coupled to the modem and the display. The processor is configured to determine a strength of the signal and to indicate the strength of the signal on the display. The step-up converter is coupled to one of the modem, the processor, and the display. The step-up converter is configured to step-up the voltage of a power source to power the one of the modem, the processor, and the display. The received signal strength indicator is usable for determining a location for installing a vending machine. The location for installing the vending machine is selected based on the strength of the received signal. | 05-19-2011 |
| 20110117868 | SYSTEM AND METHOD FOR HANDLING STRONG SIGNALS AND BLOCKERS IN THE RF FRONT END - An incoming RF signal can be amplified in a RF front end of a RF receiver by conveying the signal through one of a multiple amplification paths. On each path, the gain can be controlled by RF automatic gain control (AGC) circuits. Each amplification path can be designed to handle incoming signals in a designated power range and to optimize receiver performance characteristics such as the noise figure (NF) and odd harmonic linearity in that power range. Signal power can be measured at different locations of the receiver and bypass switches can be used to convey the RF signals down one of the multiple paths based on the power measurements, according to executable logical code. An incoming signal power hysteresis can be applied to stabilize the system. Further, signal power averaging and switch delaying mechanisms can be employed to stabilize the system for rapidly fluctuating signals. | 05-19-2011 |
| 20110165852 | Radio Channel Control Method And Receiving Apparatus - A radio channel control method for controlling, in a radio communication system having a transmitter and a receiver, a radio channel from the transmitter toward the receiver. The method includes receiving a signal transmitted from the transmitter by the receiver, measuring reception quality of the signal, generating information which indicates increment or decrement of the reception quality, and controlling a modulation or coding for the radio channel based on the information. | 07-07-2011 |
| 20110183638 | METHOD FOR IMPLEMENTING CONTINUOUS RADIO FREQUENCY (RF) ALIGNMENT IN ADVANCED ELECTRONIC WARFARE (EW) SIGNAL STIMULATION SYSTEMS - A method for using a “B” channel of a dual channel measurement receiver as a transfer standard for power measurement, which may include, in an exemplary embodiment, correlating a measurement made with an “A” channel of the dual channel measurement receiver to a measurement made with an RF Power Meter on one RF signal source, so that readings from the “A” channel are aligned to the RF Power Meter; aligning the “B” Channel to the “A” Channel, once the “A” channel has been aligned to read the same as the RF Power Meter; and using the “B” Channel as a transfer standard to measure all remaining RF signal sources in the system. | 07-28-2011 |
| 20110201291 | MOBILE STATION AND MOBILE COMMUNICATION METHOD - A mobile station UE includes: a measuring unit ( | 08-18-2011 |
| 20110201292 | METHODS AND APPARATUS FOR CALIBRATING RECEIVED SIGNAL STRENGTH INDICATORS - This disclosure discloses methods and apparatus for calibrating received signal strength indicators. | 08-18-2011 |
| 20110201293 | METHODS AND APPARATUS FOR CALIBRATING RECEIVED SIGNAL STRENGTH INDICATORS - This disclosure discloses methods and apparatus for calibrating received signal strength indicators. | 08-18-2011 |
| 20110217943 | OSCILLATION PROTECTED AMPLIFIER WITH BASE STATION OVERLOAD AND NOISE FLOOR PROTECTION - An amplifier is provided for optimizing gain. The amplifier determines an optimal gain from inputs including the forward link and reverse link input power. The inputs are processed to determine an optimal gain of the amplifier. The optimal gain may be accessed from a lookup table that accounts for characteristics of the amplifier, the cell phone (or other device), and the base station (or base stations). The optimal gain is set to account at least for industry standards, amplifier oscillation issues, base station overload protection, and base station noise floor protection. | 09-08-2011 |
| 20110217944 | Adaptive Transmission Power Control for Cognitive Radio - Embodiments of cognitive radio technology can recover and utilize under-utilized portions of statically-allocated radio-frequency spectrum. A plurality of sensing methods can be employed. Transmission power control can be responsive to adjacent channel measurements. Digital pre-distortion techniques can enhance performance. Embodiments of a high DNR transceiver architecture can be employed. | 09-08-2011 |
| 20110223877 | Radio White Space Sensing - User equipment comprising a receiver obtains information about a set of channels to be sensed in a sensing process, wherein each channel is associated with a respective one of a number of radio frequencies. The receiver obtains a radio frequency signal by simultaneously sensing two or more of the channels included in the set of channels. A total power level of the sensed two or more channels is measured, and a comparison result is generated by comparing the total power level of the sensed two or more channels with a predetermined power level. The user equipment is controlled based on the comparison result. For example, if the total power level is below a threshold, then the sensed channels can be considered to not be in use by external transmission equipment. | 09-15-2011 |
| 20110223878 | Signal Strength Detecting Device and Related Method - A signal strength detecting device of a communication system is disclosed. The signal strength detecting device is coupled to a frequency down mixer of the communication system and the frequency down mixer is used for receiving and converting a first signal to a second signal whose frequencies are lower than frequencies of the first signal. The signal strength detecting device comprises a frequency up converter for receiving and converting the second signal to a third signal whose frequencies are higher than the frequencies of the second signal and a detecting unit for detecting strength of the third signal and generating a signal strength indicator to the communication system according to a detecting result corresponding to the strength of the third signal, wherein the signal strength indicator represents the strength of the first signal received by the frequency down mixer. | 09-15-2011 |
| 20110269418 | RF Performance Improvement - A method is disclosed that includes measuring, under control of one or more processors of a mobile device, performance of a radio frequency reception parameter for radio frequency reception for the mobile device. The mobile device includes one or more antennas over which the radio frequency reception occurs and the one or more processors. The method includes causing movement of the mobile device to improve the performance of the radio frequency reception parameter. A mobile device includes one or more antennas over which radio frequency reception occurs, one or more processors, and one or more memories including computer program code. The mobile device performs at least the following: measuring, under control of the one or more processors, performance of a radio frequency reception parameter, and causing movement of the mobile device to improve the performance of the a radio frequency reception parameter. Program products are also disclosed. | 11-03-2011 |
| 20120071125 | RMS AND ENVELOPE DETECTOR - Disclosed herein are power detectors and methods for detecting the average power level of an RF input signal and the voltage envelope of the RF input signal. Also disclosed herein are linear envelope detectors and methods for detecting the voltage envelope of an RF input signal. | 03-22-2012 |
| 20120094624 | Filter for an Indoor Cellular System - The invention relates to a filter ( | 04-19-2012 |
| 20120115428 | ANTENNA DIVERSITY METHOD WITH FALLBACK AND WEIGHTING - In a radio communication station having antennas an antenna diversity system and a gain controllable amplifier the gain of the gain controllable amplifier is set by using a first antenna, the signal levels of signals received at the antennas is measured, a group of antennas is determined having a signal level which exceeds the signal level of the first antenna by no more than a predetermined value, and out of said group of antennas the antenna with the highest signal level is selected out or the first antenna is selected out if said group is empty. | 05-10-2012 |
| 20120122414 | WIRELESS COMMUNICATION APPARATUS CHANGING RADIATION PATTERNS OF ANTENNA APPARATUSES - When controlling antenna apparatuses to select a predetermined combination from among a plurality of combinations of antenna elements, a controller measures RSSIs of wireless signals received by the antenna apparatuses, and sets a detection packet interval and a changeover threshold based on measured RSSIs with reference to a detection packet interval table and a changeover threshold table. Then, the combination of the antenna elements is changed over by using the set detection packet interval and the changeover threshold. | 05-17-2012 |
| 20120142295 | Antenna Selection Method and Device - An antenna selection method includes respectively utilizing each antenna of a plurality of antennas to receive a plurality of transmission signals from a plurality of stations to generate a plurality of reception signals, respectively estimating a plurality of signal quality indicators corresponding to the plurality of stations according to the plurality of reception signals for each of the plurality of antennas, calculating a weighted sum of the plurality of corresponding signal quality indicators to generate a calculation result for each of the plurality of antennas, and selecting a receiving antenna from the plurality of antennas according to the corresponding calculation result of each of the plurality of antennas. | 06-07-2012 |
| 20120149320 | SPUR MITIGATION FOR WIRELESS COMMUNICATION SYSTEMS - A receiver for a wireless communication device comprising a mechanism for performing spur mitigation. A spur mitigation unit of the receiver is operable to determine a current estimate of a spur signal from an ADC output signal using a growing box filter. The spur mitigation unit can determine a power of the current estimate of the spur signal and a power of a previous estimate of the spur signal using a power measurement unit. The spur mitigation unit can determine whether the power of the previous estimate of the spur signal is greater than the power of the current estimate of the spur signal. If the power of the previous spur signal estimate is greater than the power of the current spur signal estimate, the spur mitigation unit can remove the spur signal from the ADC output signal based on the previous spur signal estimate. | 06-14-2012 |
| 20120164965 | AUTOMATIC GAIN CONTROL WITH OUT OF BAND BLOCKING SIGNAL COMPENSATION - One embodiment of the present subject matter includes a method of receiving an input signal. The method, in various embodiments, includes detecting a peak of the input signal and detecting an envelope of the input signal. In various embodiments, the peak and envelope are used to identify out-of-band blocking signals and to adjust gain control. The method also includes comparing the peak to a first threshold Tp and comparing the envelope to a second threshold Te. In the method, if the peak is above the first threshold and the envelope is below the second threshold, then ignoring the input signal. If the envelope is above the second threshold, the method includes applying automatic gain control to decode information encoded in the input signal. | 06-28-2012 |
| 20120190320 | SMOOTHING FILTER FOR IRREGULAR UPDATE INTERVALS - A technique for determining a received signal strength from multiple messages filters noise from the received signal to provide an accurate signal strength value. Advantageously, the more accurate output signal strength value can be used to identify movement of a station as well as estimate locations and direction of movement. | 07-26-2012 |
| 20120264386 | METHOD AND APPARATUS RELATING TO SIGNAL CONTROL - The present invention relates to automatic gain control methods and apparatus for controlling a signal level of a signal at a predetermined location in a signal path of a receiver chain. An automatic gain controller comprises a local signal modifier device for selecting based on an error signal e | 10-18-2012 |
| 20120309336 | INFORMATION PROCESSING APPARATUS AND CORRECTION METHOD - An information processing apparatus includes an acquiring unit configured to receive signals, which are transmitted from a fixed station, including identification information for identifying the fixed station, measure receive signal strength indications of the received signals, and acquire position information indicating positions at which the receive signal strength indications are measured, the receive signal strength indications, and the identification information in association with each other; and a gain/attenuation rate calculating unit configured to calculate correction information including a transmission antenna gain in a specific direction from the fixed station and an attenuation rate in a propagation path, the correction information being obtained from the receive signal strength indication measured at a first distance in the specific direction from the fixed station and the receive signal strength indication measured at a second distance in the specific direction that is different from the first distance. | 12-06-2012 |
| 20120329415 | Apparatus and Method for Interference Management - A circuit includes a front-end circuit having an input for receiving a radio frequency signal, a control input, and an output. The front-end circuit includes an adjustable gain. The circuit further includes a received signal strength indicator (RSSI) circuit including an input coupled to the output of the front-end circuit and including an output. The circuit also includes a control circuit including an input coupled to the output of the RSSI circuit and an output coupled to the control input of the front-end circuit. The control circuit is configured to iteratively adjust the adjustable gain by a pre-determined adjustment until a difference between a first RSSI measurement and a second RSSI measurement is less than or approximately equal to the pre-determined adjustment. | 12-27-2012 |
| 20130023224 | RADIO WAVE RECEIVING APPARATUS FOR RECEIVING TWO DIFFERENT RADIO WAVE INTENSITIES - A radio wave receiver that receives two different sets of radio waves and displays intensity of the received radio waves. First and second radio wave processing portions receive respective radio waves and output various kinds of information, such as video information and audio information. A switching portion receives output signals from the first and second radio wave processing portions, and switches the output signals according to a switching instruction of a controller to supply the output signals to a display portion and a speaker. The controller causes the intensities of the received radio waves in respective tuners of the first and second radio wave processing portions to be displayed simultaneously or in a switching manner based on a user's operation irrespective of which tuner's received radio waves are being processed. | 01-24-2013 |
| 20130122841 | SEARCHER DETECTION METRICS - Methods and apparatus for determining a reference sequence and timing based on normalized correlations are described. One example method generally includes receiving, at a first antenna of an apparatus, a first signal comprising a reference sequence; receiving, at a second antenna of the apparatus, a second signal comprising the same reference sequence; sampling the first and second signals to form first and second signal sequences; correlating the first and second signal sequences with each of one or more candidate sequences for the reference sequence using normalization; and determining the reference sequence and timing for the first and second signals based on the normalized correlations. | 05-16-2013 |
| 20130203370 | WIRELESS COMMUNICATION RECEIVER AND METHOD THEREOF - A wireless communication receiver includes a circuit, an analog-to-digital converter (ADC) and a processing circuit. The circuit receives a wireless signal and outputs an analog signal according to a gain index. The ADC converts the analog signal to a digital signal. The processing circuit adjusts the gain index according to a clipping number of the ADC. | 08-08-2013 |
| 20130210378 | METHOD AND SYSTEM FOR INTEGRATED WIRELESS POWER AND DATA COMMUNICATION - A method and system of integrated wireless power and data transmission in a wireless device having a data communication circuit for wireless data communication and a power reception circuit including a charge storage unit. The wireless device is tuned to receive wireless RF signals in a certain frequency band via an antenna. Switching between power reception mode and data communication mode is detected. Received RF signal electrical charge is selectively distributed to the power reception circuit and/or the data communication circuit based on the switching mode and/or strength of the RF signal. | 08-15-2013 |
| 20130225106 | Radio Receiver Apparatus of a Cellular Radio Network - A radio receiver apparatus of a cellular network includes a channel estimator configured to calculate channel estimates on the basis of a common pilot channel. The apparatus further includes a weight calculation unit configured to calculate a weighting factor on the basis of a signal power of the common pilot channel and control data depending on a transmit signal power of a dedicated data channel. The control data is signaled by the cellular network to the radio receiver apparatus. The radio receiver apparatus further comprises a combiner that combines the signals from multiple cells by using the channel estimates and the weighting factor. | 08-29-2013 |
| 20130244604 | BOOSTED, DEDICATED REFERENCE SIGNAL - A device includes a receiver, a determiner, and a demodulator. The receiver is configured to receive from a base station a reference signal having a power level such that a sum of the power level and a processing gain of a channel estimator of the device corresponds to a predetermined demodulation penalty for the device. The determiner is configured to determine the power level. The demodulator is configured to demodulate a data signal received from the base station based on the power level and a channel estimate generated based on the reference signal. | 09-19-2013 |
| 20130273866 | System and Method for Detecting Use of a Wireless Device While Driving - A system for detecting the use of wireless devices such as a mobile phone, personal digital assistant (PDA), or pagers in a moving vehicle receives wireless signals inside a vehicle using a radio frequency (RF) sensor(s) and converts the RF signals into voltage signals. The voltage signals are then compared with known waveforms to determine if the wireless signals indicate a received call, if the received call is answered, a transmitted call, an SMS text message, data associated with internet browsing on a wireless device, or Bluetooth activity. | 10-17-2013 |
| 20130288628 | ADJUSTABLE ANTENNA ASSEMBLY FOR RECEIVE BLOCKING - An RF receiver section includes an adjustable antenna assembly, a low noise amplifier module, and a down conversion module. The adjustable antenna assembly is configured to provide a first receive antenna structure and a second receive antenna structure. The first and second receive antenna structures receive an inbound wide bandwidth RF signal that includes an interferer RF signal component and a desired inbound RF signal component. The effective polarization of at least one of the first and second receive antenna structures is adjusted to reduce signal strength of the interferer RF signal component. | 10-31-2013 |
| 20130295863 | FREQUENCY TUNING FOR LC CIRCUITS - Apparatus and methods are disclosed related to tuning a resonant frequency of an LC circuit. In some implementations, the LC circuit can be embodied in a low noise amplifier (LNA) of a receiver. The receiver can include a component configured to generate an indicator of received signal strength indication (RSSI) of a radio frequency (RF) signal received by the receiver. A control block can adjust the resonant frequency of the LC circuit based at least in part on the indicator of RSSI. As another example, the receiver can include an oscillator, such as a VCO, separate from the LC circuit that can be used to tune the resonant frequency of the LC circuit. These apparatus can compensate for variation in a zero imaginary component of an impedance across the LC circuit. | 11-07-2013 |
| 20130295864 | Antenna System And Method For Mitigating Multi-Path Effect - An antenna system and method utilize a splitter electrically connectable to a single antenna for splitting an RF signal into two signals. A variable phase shifter shifts the phase of one of the signals. A combiner combines the phase shifted and non-phase shifted signals to produce a conditioned signal. A quality examiner circuit changes the amount of phase shift provided by the variable phase shifter to produce a plurality of different conditioned signals. The quality examiner circuit then determines a quality of each conditioned signal and changes the phase shift again to provide the highest quality conditioned signal to a receiver. | 11-07-2013 |
| 20130309987 | Method and System to Analyze Interference Susceptibility of a Radio Receiver Design - Systems and methods are disclosed to analyze and predict the interference susceptibility of receiver designs. In some implementations, the systems and methods may be used during a receiver design phase to predict how well a receiver design will perform in the presence of certain types of signals in a deployment region of a receiver. The systems and methods may allow potential shortcomings in a receiver design affecting interference susceptibility to be identified and remedied before any actual receiver hardware is constructed, thereby reducing costs typically associated with complex hardware redesign efforts. | 11-21-2013 |
| 20130324063 | METHOD AND APPARATUS FOR LISTENNING TO RADIO IN PORTABLE TERMINAL - A method of listening to radio broadcast in a portable terminal includes reproducing radio broadcasts on a frequency selected by a user; determining a change in a value of a received signal strength indication (RSSI) of the selected frequency and analyzing a pattern of the change; and providing a complementary service based on the analyzed pattern when the radio broadcast over the selected frequency is not feasible. | 12-05-2013 |
| 20130344831 | APPARATUS AND METHOD FOR DETECTING FAULTY ANTENNAS - The present invention discloses an apparatus for detecting a faulty antenna among a plurality of antennas contained in a communication device ( | 12-26-2013 |
| 20140018025 | RECEIVING DEVICE, RECEIVING METHOD, AND COMPUTER PROGRAM - Provided are a receiving device, receiving method, and computer program such that good precision for signal received power estimation is achieved even during fast fading. The receiving device includes: a segmenting unit for segmenting the period the signal received power of a reception signal, i.e., a received signal, is measured in, according to characteristic values related to the power of the reception signal (for example, SNR); and a calculation unit for calculating the RSRP (signal received power) from the power of the channel estimate at each of the segment periods, i.e., the portions that the period was segmented into. | 01-16-2014 |
| 20140094133 | TEMPERATURE COMPENSATION METHOD AND APPARATUS FOR RECEIVED SIGNAL STRENGTH INDICATOR - Embodiments of the present invention provide a temperature compensation method and apparatus for a received signal strength indicator. The apparatus comprises a temperature sensor configured to measure a current temperature; and a digital compensation module configured to select a temperature compensation coefficient from prestored temperature compensation coefficients corresponding to a normal temperature, a low temperature and a high temperature according to the current temperature, and perform temperature compensation on output signals of the RSSI according to the selected temperature compensation coefficient. With the method and apparatus of the embodiments of the present invention, the accurate power values of the input signals of the RSSI under any temperatures can be obtained by measuring the characteristics of the RSSI under the predefined three temperatures, and using an interpolation method to compensate for the temperature characteristics of the RSSI. In comparison with the relevant art, the size of the storage is decreased and the accuracy of temperature compensation is improved. | 04-03-2014 |
| 20140155009 | CRYSTAL CONTROL SCHEME TO IMPROVE PERFORMANCE OF A RECEIVER - A circuit includes, in part, a receiver, a received signal strength indicator (RSSI), and an oscillator. The receiver receives an incoming signal and an oscillating signal. The RSSI is responsive to the receiver and generates an output signal representative of the strength of the incoming signal. The oscillator receives different biasing conditions in response to different outputs of the RSSI. The oscillator generates the oscillating signal received by the receiver. The oscillator receives a first biasing condition when the incoming signal is detected as having a strength lower than or equal to a predetermined threshold value and a second biasing condition when the incoming signal is detected as having a strength higher than the predetermined threshold value. The first biasing condition may be defined by a first current, and the second biasing condition may be defined by a sum of the first current and a second current. | 06-05-2014 |
| 20140179251 | Apparatus and method of harmonic selection for mixing with a received signal - A method of harmonic selection for mixing with a received signal includes receiving a radio frequency (RF) signal and determining a variable gain setting from among a plurality of gain settings or from a range of gain settings. The variable gain setting is based on the RF signal. The method further includes selecting a harmonic to provide to an input of a mixer to generate an output signal. A baseband signal or an intermediate frequency signal is generated from the output signal. The harmonic is selected based on the variable gain setting. An apparatus includes a harmonic selector that is configured to generate an indication of a selected harmonic. The harmonic is selected based on a variable gain setting determined from among a plurality of gain settings or from a range of gain settings. Based on the selected harmonic, a mixer generates an output signal. A baseband signal or an intermediate signal is generated from the output signal. | 06-26-2014 |
| 20140179252 | COMMUNICATION DEVICE AND COMMUNICATION METHOD - A communication device includes: a first antenna and a second antenna; a switch unit selecting the first antenna in a first term and the second antenna in a second term; a reception determination unit determining whether or not communication data contained in wireless signals received by the first antenna and the second antenna; and a storage unit storing association between each of communication terminals and one of the first antenna and the second antenna, in which the switch unit sets lengths of the first and second terms so that a ratio of the respective lengths of the first and second terms is equal to a ratio of the number of times the communication data from the communication terminals respectively associated with the first and second antennas and is determined to be successfully obtained. | 06-26-2014 |
| 20140220920 | RECEIVER THAT RECONFIGURES BETWEEN ZERO INTERMEDIATE FREQUENCY AND DIRECT SAMPLING BASED ON CHANNEL CONDITIONS - A wireless device for receiving wireless signals based on channel conditions is described. The wireless device includes a direct sampling path used when operating in a direct sampling mode. The wireless device also includes a zero intermediate frequency path used when operating in a normal sampling mode. The wireless device further includes a first switch coupling a filter module input to an input of the direct sampling path and an input of the zero intermediate frequency path. The wireless device also includes a second coupling a filter module output to an output of the direct sampling path and an output of the zero intermediate frequency path. The first switch and the second switch are configured to switch between the direct sampling path and the zero intermediate frequency path based on a received signal power. | 08-07-2014 |
| 20140242932 | MULTI-CHANNEL RADIO-FREQUENCY RECEIVER - The invention relates to a multichannel radio-frequency receiver for electromagnetic waves, having a radio-frequency analogue section, which has an input for an electrical signal from a reception device, and having a lower-frequency section, which is connected downstream of the radiofrequency analogue section and has a plurality of parallel channels ( | 08-28-2014 |
| 20140248845 | ANTENNA RECEIVED SIGNAL STRENGTH MEASUREMENTMENT SYSTEM WITH INTERFERENCE REDUCTION NOT AFFECTING ANTENNA PATTERN - A system and method of manufacturing the same adapted for use with an electromagnetic receiver or transceiver system comprising at least one antenna, wherein the electromagnetic receiver or transceiver system is adapted to measure signal levels for in situ antenna pattern or link budget measurements using at least one signal measurement probe placed in the signal receive path without affecting said antenna's emission pattern or receiver performance. The system further includes an output section adapted to send results from said in situ antenna pattern or link budget measurements to a remote location away from said receiver or transceiver system for recording and/or analysis. | 09-04-2014 |
| 20140315508 | Receiver and Method for the Reception of a Node by a Receiver in a Wireless Network - In one embodiment, a method includes receiving a radio frequency (RF) signal; synchronizing the received RF signal with a preamble to determine a time base; determining a first energy value of the received RF signal by averaging received signal strength indication (RSSI) values of the received RF signal over a first period of time; determining a second energy value of the received RF signal over a second period of time; determining a difference value between the first energy value and the second energy value; comparing the difference value with a predetermined energy threshold value; determining a quality value of the received RF signal; comparing the quality value of the received RF signal with a predetermined quality threshold value; and, if the difference value exceeds the predetermined energy threshold value or the quality value is below the predetermined quality threshold value, then erasing the time base. | 10-23-2014 |
| 20150038097 | Method and Radio Receiver Enabling Harmonic Distortion Estimation - A method of estimation of harmonic distortion level for a radio receiver operative in a cellular communication system enabled to receive signals from transmitters of one or more cells is disclosed. The method comprises measuring, within a bandwidth of operation, a total received signal power; measuring, within the bandwidth of operation, a received signal power of signals received from the one or more cells, respectively; and estimating a level of harmonic receiver distortions by: determining whether a fraction of the total received signal power and a theoretical noise floor is below or above a first threshold; or determining whether a remaining part of the total received signal power, said remaining part not including said fraction, is above or below a second threshold. A such radio receiver, and a computer program for implementing the method are also disclosed. | 02-05-2015 |
| 20150044980 | RECEIVED SIGNAL QUALITY INDICATOR - The invention generally relates to a method of indicating signal quality at an input to a radio receiver, and to a radio receiver. In particular, such a method is described, wherein a receiver comprises first (RF) and second (IF) gain control loops respectively using first and second gain control signals, and comprising indicating signal quality dependent on said first gain control signal and said second gain control signal. In an embodiment, a difference between the first and second gain control signals is used to indicate presence of interference and/or received signal strength. | 02-12-2015 |
| 20150118985 | WIRELESS DEVICE DETECTION USING MULTIPLE ANTENNAS SEPARATED BY AN RF SHIELD - A system comprising one or more interior antenna(s) positioned within an at least partially enclosed operator area of a human operated machine and one or more exterior antenna(s) positioned on an external portion of the human operated machine, with a radio frequency shield positioned between the interior antenna(s) and the exterior antenna(s), is usable with a processing module electrically connected with the antennas for analyzing signals received from the antennas to determine whether a radio frequency generating device is active within the at least partially enclosed operator area. | 04-30-2015 |
| 20150349901 | RECEIVING DEVICE - A receiving device that receives a signal in a receiving antenna. The receiving device includes a gain controller that adjusts a gain in the receiving device in response to information related to power of the signal, and a signal detector that determines whether, within a predetermined period after the information related to the power of the signal exceeds a first threshold value, the information related to the power of the signal exceeds a second threshold value which is larger than the first threshold value. The gain controller adjusts a search range of the gain in the receiving device based on a determination result of the signal detector with respect to the information related to the power of the signal. | 12-03-2015 |
| 20160028500 | COMMUNICATION DEVICE, RECEPTION POWER MONITORING DEVICE, AND COMMUNICATION DEVICE SYSTEM - A communication device system includes a communication device ( | 01-28-2016 |
