Patent application number | Description | Published |
20100040040 | WIRELESS DEVICE HAVING FAST-RECEIVE MODE FOR MEASURING RECEIVED SIGNAL STRENGTH (RSSI) FOR HIGHER TIME DIVISION MULTIPLE ACCESS (TDMA) MULTISLOT CLASSES - A wireless communications device having a fast-receive mode for measuring received signal strength indication (RSSI) enables the device to handle higher time division multiple access (TDMA) multislot classes without requiring that the device include either a second receiver or a receiver with a more advanced and expensive phase-locked loop (PLL) design. The time to complete an RSSI measurement is reduced by initiating the sampling of signal strength before the radio transceiver is fully stabilized in the downlink mode. By initiating sampling before PLL stabilization is complete, the overall time to complete an RSSI measurement is reduced sufficiently to enable scheduling of an RSSI measurement in each GSM frame. | 02-18-2010 |
20100208848 | MOBILE WIRELESS COMMUNICATIONS DEVICE WITH SEPARATE IN-PHASE (I) AND QUADRATURE (Q) PHASE POWER AMPLIFICATION AND POWER AMPLIFIER PRE-DISTORTION AND IQ BALANCE COMPENSATION - A communications device, in one aspect as a portable wireless communications device, includes an in-phase modulator and power amplifier that receives a baseband I signal and modulates and amplifies the I signal. A quadrature modulator and power amplifier receives a baseband Q signal and modulates and amplifies the Q signal. A power combiner sums and outputs the I and Q signals. An I demodulator circuit receives a signal fed back from the I power amplifier and demodulates the fed back signal to produce demodulated I signals. A Q demodulator circuit receives a signal fed back from the Q power amplifier and demodulates the fed back signal to produce demodulated Q signals. A processor compares the digital, baseband I and Q signals with a demodulated I and Q signals to compensate for amplitude, frequency and phase modulation errors. | 08-19-2010 |
20110255575 | COMMUNICATIONS DEVICE WITH SEPARATE I AND Q PHASE POWER AMPLIFICATION HAVING SELECTIVE PHASE AND MAGNITUDE ADJUSTMENT AND RELATED METHODS - A communications device may include an In-phase (I) circuit having an In-phase modulator and mixer circuit, and an I power amplifier circuit coupled thereto, the I circuit configured to modulate and amplify a digital baseband I signal to generate an amplified I signal, and a Quadrature (Q) circuit having a Q modulator and mixer circuit, and a Q power amplifier circuit coupled thereto, the Q circuit configured to modulate and amplify a digital baseband Q signal to generate an amplified Q signal separate from the amplified I signal. The communications device may include a processor configured, for example, to selectively switch the digital baseband signal and the digital baseband Q signal between the I and Q signal inputs to provide selective phase shifting for the digital baseband I and Q signals. For example, the controller may selectively phase shift the digital baseband I and Q signals, and control the I and Q power amplifier circuits to vary an amplitude of the amplified I and Q signals. | 10-20-2011 |
20120110051 | Reconfigurable Digital Signal Filter Processor - A reconfigurable digital signal filter processing unit for use in a communication device is provided. The reconfigurable filters processor can implement different filter topologies to adapt to a range or wireless technology characteristics. The reconfigurable filter processor comprises a plurality of filter blocks whose inputs can be selected based on the desired configuration of the filter. Each filter block applies a transfer function to a received signal to achieve a desired filtering function. | 05-03-2012 |
Patent application number | Description | Published |
20120157027 | METHOD AND SYSTEM FOR CHARACTERIZING A RADIO CHANNEL OF A WIRELESS NETWORK USING VARIABILITY OF SYNCHRONIZATION - A speed parameter or channel quality parameter are determined in a mobile device based on variation in frequency offset measurement. A higher variation in the frequency offset measurement reflects a poorer channel quality and a higher speed; a lower variation in the frequency offset measurement reflects a better channel quality and a lower speed. The parameter(s) may be fed back to the system and used, for example, to make adaptive modulation and coding decisions. | 06-21-2012 |
20120195254 | COMMUNICATIONS DEVICES WITH ENVELOPE EXTRACTION AND RELATED METHODS - A communications device may include an encoder generating digital baseband In-phase (I) and Quadrature (Q) signals, a processor coupled to the encoder and extracting an envelope characteristic from the digital baseband I and Q signals based upon a bandwidth of the digital baseband I and Q signals. A power amplifier may be coupled downstream from the processor and may generate an amplified I and Q signal based upon the envelope characteristic. | 08-02-2012 |
20120263213 | MOBILE WIRELESS COMMUNICATIONS DEVICE WITH SEPARATE IN-PHASE (I) AND QUADRATURE (Q) PHASE POWER AMPLIFICATION AND POWER AMPLIFIER PRE-DISTORTION AND IQ BALANCE COMPENSATION - A communications device, in one aspect as a portable wireless communications device, includes an in-phase modulator and power amplifier that receives a baseband I signal and modulates and amplifies the I signal. A quadrature modulator and power amplifier receives a baseband Q signal and modulates and amplifies the Q signal. A power combiner sums and outputs the I and Q signals. An I demodulator circuit receives a signal fed back from the I power amplifier and demodulates the fed back signal to produce demodulated I signals. A Q demodulator circuit receives a signal fed back from the Q power amplifier and demodulates the fed back signal to produce demodulated Q signals. A processor compares the digital, baseband I and Q signals with a demodulated I and Q signals to compensate for amplitude, frequency and phase modulation errors. | 10-18-2012 |
20130064327 | RECEIVER HAVING CONTROLLER TO SET LOCAL OSCILLATORS SO AS TO RENDER INTERFERING SIGNALS FILTERABLE AND ASSOCIATED METHODS - A receiver includes a first local oscillator (LO), with a pair of in-phase and quadrature (IQ) mixers coupled to the first LO and configured to generate complex IQ signals having an IQ imbalance. The receiver also includes a second LO, with a complex mixer coupled to the second LO and configured to mix the complex IQ signals and generate intermediate frequency (IF) signals based thereon. A controller is coupled between the pair of IQ mixers and the complex mixer and configured to set the first LO and the second LO so that the complex IQ signals and an interfering signal generated due to the IQ imbalance of the complex IQ signals have a same sign and non-overlapping bands at an input of the complex mixer. | 03-14-2013 |
20130088303 | APPARATUS, AND ASSOCIATED METHOD, FOR FORMING A SYNTHESIZED OSCILLATING SIGNAL - An apparatus, and an associated method, for synthesizing a discrete-valued oscillating signal. Input parameters are provided that are determinative of the frequency, gain, and phase characteristics of the resultant, oscillating signal. The discrete-valued, oscillating signal is combinable with another signal to form a mixed signal of a desired frequency, gain, and phase characteristic using a single complex multiplication operation. | 04-11-2013 |
20130142287 | RECEIVER WITH SELECTIVE SIGNAL PATH OPERATION AND ASSOCIATED METHODS - A receiver includes a first local oscillator, and an in-phase mixer and a quadrature mixer coupled to the first local oscillator and configured to generate in-phase and quadrature signals based upon received RF signals. A complex mixer is downstream from the in-phase and quadrature mixers. A controller is coupled to the in-phase and quadrature mixers and is configured to determine when the in-phase and quadrature signals include interference less than an interference threshold, and then powers off one of the in-phase and quadrature mixers. | 06-06-2013 |
20130208770 | COMMUNICATIONS DEVICE HAVING CONTROLLER TO CORRECT AN INITIAL IQ IMBALANCE AND ASSOCIATED METHODS - A communications device includes a plurality of wireless transmitters operable at different respective frequencies and each configured to generate respective IQ signals having an initial IQ imbalance. The communications device also includes a frequency tunable auxiliary receiver, and a controller. The controller is configured to selectively couple a given wireless transmitter to the frequency tunable auxiliary receiver and tune the frequency tunable auxiliary receiver to a frequency of the given wireless transceiver, and apply predistortion to the given wireless transmitter based upon the initial IQ imbalance to reduce the initial IQ imbalance. | 08-15-2013 |
20130208827 | METHOD AND APPARATUS TO USE AUXILIARY RECEIVER TO COMPENSATE MULTIPLE TRANSMITTERS BASED UPON ONE OF THE TRANSMITTERS - A communications device includes a plurality of wireless transmitters operable at different respective frequencies and each configured to generate respective IQ signals having an initial IQ imbalance. An auxiliary receiver is coupled to a given wireless transmitter. In addition, a controller is configured to apply predistortion to the each wireless transmitter of the plurality thereof based upon the initial IQ imbalance generated by the given wireless transmitter to reduce the initial IQ imbalance in each wireless transmitter. | 08-15-2013 |
20130243048 | COMMUNICATIONS DEVICE WITH SEPARATE I AND Q PHASE POWER AMPLIFICATION HAVING SELECTIVE PHASE AND MAGNITUDE ADJUSTMENT AND RELATED METHODS - A communications device may include an In-phase (I) circuit having an In-phase modulator and mixer circuit, and an I power amplifier circuit coupled thereto, the I circuit configured to modulate and amplify a digital baseband I signal to generate an amplified I signal, and a Quadrature (Q) circuit having a Q modulator and mixer circuit, and a Q power amplifier circuit coupled thereto, the Q circuit configured to modulate and amplify a digital baseband Q signal to generate an amplified Q signal separate from the amplified I signal. A processor selectively switches the digital baseband I signal and the digital baseband Q signal between the I and Q signal inputs to provide selective phase shifting for the digital baseband I and Q signals. | 09-19-2013 |
20130273871 | RADIO RECEIVER WITH RECONFIGURABLE BASEBAND CHANNEL FILTER - A radio receiver circuit configured to receive a radio frequency signal and produce a baseband signal as an output therefrom has a channel filter having a bandwidth, the channel filter configured to receive the baseband output at a filter input and produce a filtered output at a filter output thereof. A signal-to-noise ratio (SNR) estimator prior to or after the channel filter or both is configured to estimate a signal-to-noise ratio of the baseband signal. A filter controller is configured to receive the signal-to-noise ratio estimate and control the channel filter to adjust the bandwidth thereof in accord with the signal-to-noise ratio estimate. This process thereby assists in improving SNR after the channel filtering by varying the channel filter bandwidth. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract. | 10-17-2013 |
20130315345 | MOBILE WIRELESS COMMUNICATIONS DEVICE WITH SEPARATE IN-PHASE (I) AND QUADRATURE (Q) PHASE POWER AMPLIFICATION AND POWER AMPLIFIER PRE-DISTORTION AND IQ BALANCE COMPENSATION - A communications device, in one aspect as a portable wireless communications device, includes an in-phase modulator and power amplifier that receives a baseband I signal and modulates and amplifies the I signal. A quadrature modulator and power amplifier receives a baseband Q signal and modulates and amplifies the Q signal. A power combiner sums and outputs the I and Q signals. An I demodulator circuit receives a signal fed back from the I power amplifier and demodulates the fed back signal to produce demodulated I signals. A Q demodulator circuit receives a signal fed back from the Q power amplifier and demodulates the fed back signal to produce demodulated Q signals. A processor compares the digital, baseband I and Q signals with a demodulated I and Q signals to compensate for amplitude, frequency and phase modulation errors. | 11-28-2013 |
20150054579 | SYSTEM AND METHOD FOR FAST POLYNOMIAL PRE-DISTORTION - A system and method for method of pre-distorting a signal applied to a power amplifier to compensate for distortion introduced by the power amplifier at different power settings, comprising pre-distorting the signal according to a pre-distortion polynomial, prior to amplification of the signal by the power amplifier; adaptively estimating and applying pre-distortion polynomial coefficients to the pre-distorter by saving successive iterations of adaptive estimation of the pre-distortion polynomial coefficients; and regularizing estimation of the pre-distortion polynomial coefficients over successive iterations according to a modified objective function that initially constrains growth in the magnitude of the pre-distortion polynomial coefficients and then relaxes the constraint in growth over successive iterations until estimation is reduced to a steady-state least squares estimation. | 02-26-2015 |
Patent application number | Description | Published |
20090254575 | APPARATUS AND METHOD FOR MANIPULATING NESTED ARCHIVE FILES AND FOLDERS - Methods for packing and unpacking files in a multi-level hierarchy in single actions. The methods operate in memory through using one file pointer for the archive file in recursive calls to the packing and unpacking methods, for accessing files in multiple nested levels. The packing and unpacking are performed in memory, and no temporary files are written to a storage device, thus saving on storage and processing time. A user can also store or retrieve files selectively from an archive file. | 10-08-2009 |
20120109933 | METHOD AND APPARATUS FOR FEDERATED SEARCH - A method and apparatus for searching data by a computing platform from two or more computerized data sources, comprising an indexing stage and a searching stage. The indexing stage comprising: retrieving data from at least an on-premise data source and an on-demand data source, identifying data related to an entity from the on-premise data source with data from the on-demand data source, merging the data from the on-premise data source with data from the on-demand data source, normalizing the data from the on-premise data source with data from the on-demand data source, and generating a first index comprising one or more mashed entities or one or more mashed relationships obtained from the on-premise data source and the on-demand data source. The searching stage comprising: receiving a query from a user, scanning the first index in accordance with the query, retrieving data from the first index, and outputting the data. | 05-03-2012 |
20120109939 | METHOD AND APPARATUS FOR ENRICHING SEARCH RESULTS - A method and apparatus for providing search data by a processor at a computer, comprising: receiving a query issued by the user and passing the query to one or more computing entities; receiving at a first result and a second result from one of the computing entities; identifying one or more common characteristics of the first result and the second result; and returning a result set comprising the first result and the second result, the result set being searchable in accordance with any of the common characteristics. | 05-03-2012 |
20120110000 | METHOD AND APPARATUS FOR PERSONALIZED SEARCH - A method and apparatus for searching data by a processor at a computer, comprising: retrieving user context of a user using the computer, the user context comprising at least one data item, retrieval performed by a first computational entity executed by the computer; receiving a query issued by the user; attaching a data item of the at least one data item in the query; sending the query to a second computational entity for searching; and receiving results from the second computational entity. | 05-03-2012 |
20120110480 | METHOD AND APPARATUS FOR RENDERING A WEB PAGE - A method and apparatus for rendering a web page comprising multiple widgets, comprising: upon receiving a widget, receiving or associating a priority with the widget, and associating the widget with a hidden area of the page; creating a wrapper for the widget, enabling rendering the widget and communication between the widget and the apparatus; selecting according to the priority, a widget, adding the wrapper to a browser rendering tree, eliminating the widget from the hidden area and adding to a visible area of the page; receiving an event from the wrapper indicating the widget at least partially rendered, or a timeout event; assigning the widget to the hidden area and eliminating from the visible area of the page, and repeating selecting and receiving; provided the event received indicated that the widget at least nearly rendered, determining whether another widget has to be rendered, and if yes repeating selecting and receiving. | 05-03-2012 |
20120150792 | DATA EXTRACTION FRAMEWORK - The present disclosure involves systems, software, and computer implemented methods for providing a data extraction framework for extracting data and metadata from an application to provide additional functionality for the extracted data and metadata. One process includes operations for identifying a first application for data extraction and determining a set of data suitable for extraction from the first application using a software development kit associated with the first application. The set of data is stored in a repository without storing visualization components of the first application in the repository. The set of data is sent to a second application for further processing of the set of data. The second application is configured to bind different visualization components to the set of data for display of data elements in the set of data to a user. | 06-14-2012 |
20130091456 | MANAGING SEMANTIC DATA IN A CONTEXTUAL WORKSPACE - Techniques for managing a virtual workspace include: generating a virtual workspace viewable by a user on a graphical user interface, the virtual workspace comprising a plurality of workspace modules comprising data contained in a plurality of data objects; identifying an interaction by the user with at least some of the data contained in a particular data object of the plurality of data objects; and providing, through the virtual workspace, at least one suggestion comprising a description of data contained in the plurality of data objects that is semantically related to the data interacted with by the user. | 04-11-2013 |