Matches 1 - 50 out of 64 1 2 >


Match Document Document Title
US20130344829 ADJUSTABLE RECEIVE FILTER RESPONSIVE TO FREQUENCY SPECTRUM INFORMATION  
An adjustable filter is responsive to a control signal to change a frequency response of the adjustable filter based on frequency spectrum information. The control signal may shift a center of the...
US20110199946 METHOD AND APPARATUS FOR SUPPORTING ADAPTIVE CHANNEL STATE INFORMATION FEEDBACK RATE IN MULTI-USER COMMUNICATION SYSTEMS  
Certain aspects of the present disclosure relate to techniques for achieving adaptive channel state information (CSI) feedback rate in multi-user communication systems. A rate by which CSI...
US20100173598 METHOD AND SYSTEM FOR FILTER CALIBRATION USING FRACTIONAL-N FREQUENCY SYNTHESIZED SIGNALS  
A method and system for filter calibration using fractional-N frequency synthesized signals are presented. Aspects of the method may include generating an LO signal by a PLL circuit within a chip....
US20120052827 DECISION DIRECTED ANTENNA DIVERSITY IN RADIO FREQUENCY RECEIVERS  
A white space sensing method includes receiving a signal on each of multiple antennas in an alternating fashion. The method also includes calculating feature metrics for incumbent signals on a...
US20100265400 METHOD OF OPERATING A RECEIVER  
A method of operating a receiver, comprising: determining a location of the receiver by analyzing a broadcast signal received by the receiver, determining information for a user, the information...
US20070184801 RADIO RECEPTION APPARATUS AND RADIO RECEPTION METHOD  
A radio reception apparatus is a radio reception apparatus for demodulating a multicarrier signal modulated according to multicarrier modulation. It includes a plurality of antenna sections, each...
US20050003781 Multiple format radio frequency receiver  
RF receiver topologies and systems incorporating such topologies are described. Various implementations allow the intelligent monitoring of transmission formats, multi-format reception, and...
US20060079190 Data communication system with optimal damping function  
A data communication system includes a plurality of sensor initiators, each of which has first and second antennas; a communication control module and a plurality of sensor communication modules....
US20050170782 Method and apparatus to compensate quantization error of channel quality report  
In one aspect this invention provides a wireless communication system (5) that includes a mobile station (20) having circuitry (22, 24, 26) and a computer program controlling operation of the...
US20110076975 METHOD AND APPARATUS FOR WIRELESS LOCATION MEASUREMENT  
A wireless location measurement method of a receiver includes: receiving signals from a transmitter for a plurality of time intervals; extracting a final propagation delay tab profile based on a...
US20110312354 WIRELESS DISASTER-PREVENTION NODE AND WIRELESS DISASTER-PREVENTION SYSTEM  
To determine the busy degree of the operating frequency channel caused by other systems and enable a user to know an unused frequency channel having a low communication frequency. A first...
US20110136456 SYSTEM AND METHOD FOR SIGNAL DETECTION USING A DYNAMIC THRESHOLD  
Systems and methods for signal detection are disclosed. In one embodiment, detection of a signal is performed using a dynamic threshold selected based at least in part on the determination that a...
US20150017939 POSITION ENGINE (PE) FEEDBACK TO IMPROVE GNSS RECEIVER PERFORMANCE  
Embodiments of the invention provide a method for detecting false peaks in a Global Navigation Satellite System (GNSS) having a power control circuit, a measurement engine, and position engine. An...
US20110215960 Radio receiver  
A method of receiving signals from an aircraft transponder is provided that enables ADS-B signals to be decoded even though parts of the signal may be overlapped due to interference. A plurality...
US20130303099 RECEIVER CONFIGURABLE IN A PLURALITY OF MODES  
Methods and corresponding systems for receiving a radio frequency signal include a receiver capable of switching operating modes and operable to receive the radio frequency signal in any of the...
US20090291702 RADIO COMMUNICATION TERMINAL AND RADIO COMMUNICATION BASE STATION DEVICE  
Provided are a radio communication terminal and a radio communication base station device which are installed in a Multi-User MIMO system even if the ability to suppress interference is low....
US20060068716 Measurement of local oscillation leakage  
The measuring of local oscillation leakage in radio frequency integrated circuits (RFICs) begins by concurrently enabling a transmitter portion and a receiver portion of a radio frequency...
US20130201855 MICROWAVE ANTENNA ALIGNMENT METHOD AND APPARATUS  
The present invention discloses a microwave antenna alignment method and apparatus, relating to the field of communications technologies, and providing a clear instruction for antenna adjustment...
US20100246725 Selective diversity receiving method and apparatus  
In a selective diversity receiver with two antennas, the strength of the signal received by each antenna is measured at a present and a past time, the difference between the present strengths of...
US20090170458 Method and Receiver for Identifying a Leading Edge Time Period in a Received Radio Signal  
A method for identifying a leading edge time period of a received radio signal includes identifying a greatest energy time period in a sequence of time periods. The received radio signal has a...
US20090296863 Interference Estimator  
A method of detecting a data stream comprising estimating a data stream from a received signal, generating an interference estimate based on said estimated data stream, detecting the data stream...
US20130157601 POLARIZATION CONTROL DEVICE, INTEGRATED CIRCUIT AND METHOD FOR COMPENSATING PHASE MISMATCH  
A polarization control device (360) for compensating phase mismatch, wherein the polarization control device (360) is operably coupleable via at least two radio frequency (RF) feed paths to an...
US20090131123 REDUCED POWER CONSUMPTION IN SOFTWARE RADIOS  
Provided are apparatuses and methods for reducing processor load or power consumption during channel estimation in a receiver. For example, a receiver may monitor a transmission channel and...
US20060172716 Ofdm reception device and ofdm reception method  
An interference symbol determining section 208 compares reception power of a signal at an interference position measured by an interference position reception power measuring section 208B with a...
US20110117869 MULTIPLE BAND PORTABLE SPECTRUM ANALYZER  
A device for detecting RF power information, for use as a stand alone purpose built device, or connectable to an external computing instrument such as a laptop, PDA, or cell phone, or other...
US20110164690 METHODS AND SYSTEMS FOR LOCATION ESTIMATION  
A receiver system and method for determining the location of a device in a wireless network having a plurality of transmitters is provided. The method includes receiving a signal at the device,...
US20050124310 Receiver  
A receiver capable of removing multipass distortion and improving an S/N. The receiver of the invention comprises a multipass removal filter for removing the multipass distortion from an...
US20070149130 Apparatus and method for monitoring a trunked radio communications system  
The present invention provides a method and apparatus for monitoring a trunked radio communications system by using some type of radio scanning receiver that is not designed for that purpose. In...
US20060199558 Apparatus and method for detecting preambles according to IEEE 802.11A/B/G wireless LAN standards and its application to a 802.11 multimode receiver  
The present invention relates to the field of wireless communication systems and in particular to an apparatus and a method for detecting preambles according to IEEE 802.11a/b/g wireless LAN...
US20060094365 Channel simulator and wireless apparatus evaluation method  
An output signal of digital baseband processing section 41 is directly input, and receiver noise adding section 103 adds receiver noise simulating the SNR variation due to fading to the signal...
US20100248668 POSITIONING RECEIVER AND POSITIONING METHOD FOR USER EQUIPMENT  
A positioning receiver and a positioning method for user equipment in which errors in the position when the position of the user equipment is calculated can be reduced even in an environment in...
US20090318133 ERROR DETECTOR, ERROR DETECTING METHOD AND CONTROL PROGRAM THEREOF  
An error detector includes: an automatic gain control amplifier for amplifying or attenuating an input signal with a variable gain and outputting an output signal; and a control unit for...
US20060135072 Apparatus and related methods to aid in system identification in a heterogeneous communication system environment  
An apparatus and associated methods to aid in system identification in a heterogeneous communication environment is generally described herein.
US20100317358 RECEIVING APPARATUS, BASE STATION APPARATUS, AND SYNCHRONIZATION TIMING DETECTION METHOD  
A receiving apparatus includes a synchronization timing detector that detects one of a first sampling timing and a second sampling timing as a synchronization timing of a received digital signal....
US20090285274 EQUALIZER LOCK DETECTION BASED ON THE LOCATION OF RECEIVED SIGNAL POINTS  
An ATSC (Advanced Television Systems Committee-Digital Television) receiver comprises an equalizer and a lock detector. The equalizer provides a sequence of received signal points from a...
US20130012149 Adaptive Real-time Control System for Transceiver Level and Gain Regulation  
Adaptive gain regulation is performed by measuring one or more real-time closed-loop statistics for a signal output from a gain-controllable circuit and blindly adjusting the gain of the...
US20090163162 DIRECT CONVERSION RECEIVING ARCHITECTURE WITH AN INTEGRATED TUNER SELF ALIGNMENT FUNCTION  
A direct conversion receiver with an integrated self alignment tuner. The system includes a tank circuit, an analog to digital converter, a digital down converter, a digital up converter, a local...
US20050032494 Receiver test system  
Performance of receivers can be determined by automated or manual testing of receivers without interrupting communication service to users of the communication system. In one embodiment, the...
US20140029658 Analog/Digital Co-Design Methodology to Achieve High Linearity and Low Power Dissipation in a Radio Frequency (RF) Receiver  
Receiver design techniques are provided that are capable of producing relatively efficient, linear radio frequency (RF) receivers. During a design process, components of an analog receiver chain...
US20050227654 Method of communication channel estimation and information receiving terminal using the same  
A method of communication channel estimation between a transmitter and a receiver is provided. The method includes the step (a): receiving at a first interval a first signal transmitted by the...
US20060217096 Testing apparatus for digital telecommunication  
The invention relates to a testing apparatus (21) comprising means for receiving signals in a frequency range comprising a plurality of channels. The testing apparatus further comprises means for...
US20100056091 DEVICE AND METHOD FOR REDUCING LEAKAGE SIGNAL  
The present invention relates to a leakage signal reducing device and method. The present invention uses a signal with varied phase and gain output by a local oscillator to eliminate a leakage...
US20120164964 APPARATUS FOR RADIO CHANNEL MEASUREMENT USING MULTIPLE-ANTENNA SYSTEM  
Provided is a radio channel measurement apparatus including: a multiple-antenna system including at least two antennal elements; a single-path processor; and a multiple-path processor to partition...
US20090186588 Method and apparatus for determining context information using electromagnetic interference patterns  
The exemplary embodiments of this invention describe a method for determining context information using EMI patterns. The method includes determining emitter information of a measured interference...
US20050287973 Radio receiver capable of suppressing deterioration in reflection characteristics of output therefrom  
A radio receiver, which is for example a GPS receiver, comprises a reception antenna receiving a radio wave whose wavelength γ to output an electrical signal depending on the received radio wave,...
US20070178841 Apparatus and methods for concurrent wireless network analysis  
Methods and apparatus for simultaneous wireless network analysis are described. The apparatus may include a plurality of wireless receivers and a discriminator/analyzer module to identify data...
US20060035612 Receiver  
There is provided a receiver not requiring a complicated connection for an operation test and capable of reducing the test time and simplifying the device configuration. An output signal of an...
US20060148436 Signal amplifying apparatus and method  
A signal amplifying apparatus and method selectively amplify a received signal according to the strength of the received signal. The signal amplifying apparatus includes a signal receiving unit...
US20060270371 Tracking short-term maximum power spectrum density for improved visibility of low duty cycle signals  
A method is provided for analyzing activity in a frequency band that improves over conventional spectrum analyzers by providing the ability to visualize signals or energy with short duty cycles....
US20060099912 Apparatus and method for transmit power level reporting with reduced interference  
A method and apparatus for transmit power level reporting with reduced interference. An average radio frequency power level can be computed from measurements for each of a plurality of radio...

Matches 1 - 50 out of 64 1 2 >