Non-linear interference cancellation for wireless transceivers

K Azadet - US Patent 9,787,459, 2017 - Google Patents
Non-linear interference cancellation techniques are provided for wireless transceivers. Non-
linear reduction of interference of a transmit signal on a received signal in a transceiver …

Mixed-mode digital predistortion

P Pratt - US Patent 10,033,413, 2018 - Google Patents
Various examples are directed to systems and methods for digital predistortion (DPD). A
linear digital predistortion (DPD) circuit may be programmed to generate a pre-distorted …

Wideband digital predistortion

P Pratt - US Patent 10,224,970, 2019 - Google Patents
Various examples are directed to systems and methods for wideband digital predistortion. A
digital pre-distortion cir cuit may be programmed to receive a complex baseband signal and …

Multiband digital predistorter

HH Kim, A Megretski, Y Li, K Chuang… - US Patent …, 2021 - Google Patents
Disclosed are methods, systems, devices, apparatus, media, design structures, and other
implementations, including a method for digital predistortion of multiband signals that …

Power amplifier system including a composite digital predistorter

H Zhou, N Zhang - US Patent 8,989,307, 2015 - Google Patents
A power amplifier system including a composite digital predistorter (DPD) ensuring
optimized linearity for the power amplifier is described. In this system, a digital-to-analog …

Multi-band linearization system

K Chuang, A Megretski, Y Li, HH Kim - US Patent 11,115,067, 2021 - Google Patents
Disclosed are implementations, including a method for digital predistortion of multiband
signals that includes receiving an input signal comprising multiple signal portions in different …

Modular multi-channel RF calibration architecture for linearization

RC Lagoy, GM Flewelling, TJ Johnson - US Patent 10,623,118, 2020 - Google Patents
The system and method for adaptively obtaining coefficients of an inverse model for both
equalization and pre-distortion for a multi-channel and reconfigurable RF system. The …

Linearization with envelope tracking or average power tracking

A Megretski, Z Mahmood, Y Li, K Chuang… - US Patent …, 2021 - Google Patents
Disclosed are systems, devices, modules, methods, and other implementations, including a
method for digital predistor tion that includes receiving, by a digital predistorter, a first signal …

Subsampled linearization system

Z Mahmood, A Megretski, K Chuang, Y Li… - US Patent …, 2021 - Google Patents
Disclosed are implementations that include a method com prising applying at least one input
signal to a power ampli fication system, that includes a transmit chain with a power amplifier …

Apparatus and method for processing reduced bandwidth envelope tracking and digital pre-distortion

IT Kang, SM Bae, JH Lim - US Patent 8,649,746, 2014 - Google Patents
Anapparatus and a method for processing reduced bandwidth Envelope Tracking (ET) and
Digital Pre-Distortion (DPD) are provided. The apparatus includes a Crest Factor Reduc tion …