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Class Information
Number: 455/114.3
Name: Telecommunications > Transmitter > Noise or interference elimination > Predistortion (e.g., for power amplifier)
Description: Subject matter where a transmitted signal may prior to transmission, be distorted in a manner complementary to the distortion introduced in the power amplifier, antenna or transmission medium, etc.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8711760 Method and apparatus to adjust received signal Apr. 29, 2014
8712339 Methods and apparatus for power amplifier calibration Apr. 29, 2014
8712345 Distortion compensation device, distortion compensation method, and radio transmitter Apr. 29, 2014
8704595 Predistortion apparatuses and methods Apr. 22, 2014
8706061 Method for simultaneous transmitter operation Apr. 22, 2014
8693962 Analog power amplifier predistortion methods and apparatus Apr. 8, 2014
8688058 Techniques for improving transmitter performance Apr. 1, 2014
8687733 Digital predistortion (DPD) method and system for selecting at least one data sample Apr. 1, 2014
8682263 Programmable transmit continuous-time filter Mar. 25, 2014
8682315 Predistortion system and method based on look up table interpolation Mar. 25, 2014
8681840 Transceivers having loopback switches and methods of calibrating carrier leakage thereof Mar. 25, 2014
8670732 Broadband amplifier system using a 3dB quadrature combiner to dynamically modulate load impedance Mar. 11, 2014
8666336 Digital pre-distortion with model-based order estimation Mar. 4, 2014
8665978 Wireless communication apparatus and wireless communication method Mar. 4, 2014
8665991 Communications device with separate I and Q phase power amplification having selective phase and magnitude adjustment and related methods Mar. 4, 2014
8660208 Apparatus and methods for QAM modulation using dual polar modulation Feb. 25, 2014
8660207 Digital pre-distortion with carrier cancellation Feb. 25, 2014
8654821 Method and circuit for fractional rate pulse shaping Feb. 18, 2014
8654891 Peak suppressing apparatus, peak suppressing method and wireless communications apparatus Feb. 18, 2014
8655289 Distortion compensation device, transmitter, and distortion compensation method Feb. 18, 2014
8655293 PA bias optimization for modulation schemes with variable bandwidth Feb. 18, 2014
8649746 Apparatus and method for processing reduced bandwidth envelope tracking and digital pre-distortion Feb. 11, 2014
8649745 Adaptive predistortion for a non-linear subsystem based on a model as a concatenation of a non-linear model followed by a linear model Feb. 11, 2014
8649744 Radio-frequency transmitter, such as for broadcasting and cellular base stations Feb. 11, 2014
8649743 Transmitter linearized using inversing and non-inversing transform processing sections and method therefor Feb. 11, 2014
8639197 Method and system to prevent harmonics from causing distortion in a communications system Jan. 28, 2014
8639199 System and method for high performance coherent peak compression estimation Jan. 28, 2014
8630369 Emphasis circuit and transmitter Jan. 14, 2014
8626093 RF power transmission, modulation, and amplification embodiments Jan. 7, 2014
8626090 Circuit and method for interference reduction Jan. 7, 2014
8626092 Low variation current multiplier Jan. 7, 2014
8626089 Adaptive predistorter coupled to a nonlinear element Jan. 7, 2014
8620234 High efficiency linearization power amplifier for wireless communication Dec. 31, 2013
8620233 Method of power amplifier predistortion adaptation using compression detection Dec. 31, 2013
8620232 Post filter for spectral domain echo cancellers to handle non-linear echo components Dec. 31, 2013
8620226 Enhanced wideband transceiver Dec. 31, 2013
8619903 Crest factor reduction for a multicarrier-signal with spectrally shaped single-carrier cancelation pulses Dec. 31, 2013
8619847 Reconditioning equalizer filter for non-constant envelop signals Dec. 31, 2013
8615208 Transmitter linearized in response to signal magnitude derivative parameter and method therefor Dec. 24, 2013
8611460 Wireless communication unit, integrated circuit and method of power control of a power amplifier therefor Dec. 17, 2013
8611451 Precoder coefficient optimization method and apparatus for communications systems Dec. 17, 2013
8611459 Transmitter linearized using look-up table with unadaptable data and method therefor Dec. 17, 2013
8605822 Apparatus and method for transmitting and receiving data Dec. 10, 2013
8606197 Method and system for generating odd order predistortions for a power amplifier receiving concurrent dual band inputs Dec. 10, 2013
8588714 Method and apparatus for regulating a power amplifier Nov. 19, 2013
8588711 Transmission apparatus and distortion compensation method Nov. 19, 2013
8588330 Quadrature communications device with I antennas and Q antennas and related methods Nov. 19, 2013
8588325 Communication system, transmission device, reception device, and communication method Nov. 19, 2013
8582687 System and method for controlling combined radio signals Nov. 12, 2013
8576941 Configurable basis-function generation for nonlinear modeling Nov. 5, 2013

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