Patent application number | Description | Published |
20100013709 | Antenna Array and A Method For Calibration Thereof - An antenna array ( | 01-21-2010 |
20110007836 | SAMPLE RATE CONVERSION IN DELTA-SIGMA MODULATORS - Transmitter comprising a delta-sigma modulator (DSM), a sample rate converter (SRC) situated downstream of the delta-sigma modulator with respect to a direction of transmission signal flow, and a switching amplifier (SA) situated downstream of the sample rate converter (SRC) with respect to the direction of transmission signal flow. The invention as defined above allows for a decoupling of the clock frequency of the delta-sigma modulator (DSM) and the carrier frequency, for example in radio frequency (RF) signal generation applications using delta-sigma modulators. With the invention described herein it is possible to design the delta-sigma modulator independently of the carrier frequency. | 01-13-2011 |
20110069633 | ANTENNA ARRAY, NETWORK PLANNING SYSTEM, COMMUNICATION NETWORK AND METHOD FOR RELAYING RADIO SIGNALS WITH INDEPENDENTLY CONFIGURABLE BEAM PATTERN SHAPES USING A LOCAL KNOWLEDGE - The present disclosure provides an antenna array ( | 03-24-2011 |
20110070822 | USER GROUP SPECIFIC BEAM FORMING IN A MOBILE NETWORK - The present disclosure relates to a radio system ( | 03-24-2011 |
20110085490 | ABSOLUTE TIMING AND TX POWER CALIBRATION OF THE TX PATH IN A DISTIBUTED SYSTEM - A radio system and a method for relaying packetized radio signals is disclosed. The radio system and the method provide a calibration of transmit signals. Furthermore the radio system and the method provide a measurement of a transmit power level. The radio system comprises at least one transmit path, a calibration unit, a base band calibration signal generator synchronised to a synchronisation unit, at the least one link and a power sensor. A portion of a selected one of coupled transmit signals is forwarded to a power sensor for measuring a power level, wherein the calibration unit is adapted to update a transmit power level of the at least one transmit path in response to the transmit power level of the selected one of the coupled transmit signals. | 04-14-2011 |
20110244819 | ACTIVE ANTENNA ARRAY AND METHOD FOR CALIBRATION OF THE ACTIVE ANTENNA ARRAY - The disclosure relates to an active antenna array for a mobile communication system which comprises a plurality of receive paths, a control unit for generating a sounding signal, and a coupler for coupling the sounding signal into at least one of a plurality of receive paths. A switch is used to switch the output of one the plurality of receive paths between one of a receiver and a calibration unit. | 10-06-2011 |
20110299430 | ACTIVE ANTENNA ARRAY AND METHOD FOR RELAYING RADIO SIGNALS WITH SYNCHRONOUS DIGITAL DATA INTERFACE - The present disclosure relates to an active antenna array for a mobile communications network. The active antenna comprises a base band unit coupled to a base station, a plurality of transceiver units and at least one link. The plurality of transceiver units is terminated by at least one antenna element. The at least one link couples individual ones of the plurality of transceiver units to the base band unit | 12-08-2011 |
20110299456 | ACTIVE ANTENNA ARRAY AND METHOD FOR RELAYING RADIO SIGNALS - The present disclosure teaches an active antenna array for a mobile communications network. The active antenna array comprises a base band unit, a plurality of transceiver units terminated by at least one antenna element; and at least one link. The link couples the individual ones of the plurality of transceiver units to the base band unit. The link is a digital link and is adapted to relay a payload signal at a selectable payload rate. The digital link is further adapted to relay a timing signal at a fixed timing rate, when the timing signal is embedded in the payload at a selectable payload rate. The present disclosure further teaches a method for relaying radio signals and a computer program for manufacturing the active antenna array and for executing the method. | 12-08-2011 |
20120093209 | CREST FACTOR REDUCTION METHOD AND CIRCUIT FOR A MULTI-CARRIER SIGNAL - A method for crest factor reduction of a multi-carrier signal is disclosed. The method comprises determining a plurality of signal values of a plurality of single-carrier signals prior to combining the plurality of single-carrier signals to form the multi-carrier signal. The method further comprises performing a joint potential peak detection on the plurality of signal values, producing a temporal position of a possible peak in the multi-carrier signal, generating a plurality of cancellation pulses, and injecting the plurality of cancellation pulses to the plurality of single-carrier signals at temporal injection positions which correspond to the temporal position of the possible peak in the multi-carrier signal. The single-carrier signals are then combined to form a crest factor reduced multi-carrier signal. A corresponding circuit and corresponding computer program product useable during manufacture and operation are also disclosed. | 04-19-2012 |
20120093210 | CREST FACTOR REDUCTION FOR A MULTICARRIER-SIGNAL WITH SPECTRALLY SHAPED SINGLE-CARRIER CANCELATION PULSES - A method for crest factor reduction of a multi-carrier signal is disclosed. The multi-carrier signal comprises a plurality of single-carrier signals, each single-carrier signal having signal-specific spectral properties. The method comprises identifying a peak in the multi-carrier signal and a time of occurrence of the peak and generating a plurality of cancellation pulses depending on the time of occurrence of the peak. A particular cancellation pulse of the plurality of cancellation pulses is associated with a particular single-carrier signal and cancellation pulse-specific spectral properties of the particular cancellation pulse substantially match the signal-specific spectral properties of the associated particular single-carrier signal. The method further comprises combining the plurality of cancellation pulses to form a combined cancellation pulse and applying the combined cancellation pulse to the multi-carrier signal to reduce the peak. A corresponding circuit and corresponding computer program products useable during manufacture and operation are also disclosed. | 04-19-2012 |