Title:
ANALOG PRE-DISTORTION (APD) CORRECTION SYSTEM AND METHOD
Document Type and Number:
WIPO Patent Application WO/2016/191993
Kind Code:
A1
Abstract:
An APD correction system and method, easy to implement. The system comprises a core unit, a gain adjustment unit, an error generation unit, and a training unit, wherein the core unit delays a system input signal so as to obtain N delay signals for different delays, and one of the delay signals, serving as a feed-forward signal, is output to the error generation unit, N being an integer which is not smaller than 1; obtain, according to the system input signal, the N delay signals for different delays, and an APD coefficient, an input signal of a power amplifier (PA), some of output signals of the PA being coupled as feedback signals; the gain adjustment unit adjusts gains of the feedback signals so as to obtain a feedback adjustment signal, and outputs the feedback adjustment signal to the error generation unit; the error generation unit generates error signals of the feed-forward signal and the feedback adjustment signal, and outputs the error signals to the training unit; and the training unit determines, according to the error signals, an APD coefficient, and outputs the APD coefficient to the core unit.
Inventors:
YE SIQING (CN)
YOU LAN (CN)
CAO BIN (CN)
ZHU ERNI (CN)
YOU LAN (CN)
CAO BIN (CN)
ZHU ERNI (CN)
Application Number:
PCT/CN2015/080442
Publication Date:
December 08, 2016
Filing Date:
May 30, 2015
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04L25/49
Foreign References:
| CN103858397A | 2014-06-11 | |||
| CN101807886A | 2010-08-18 | |||
| KR20060098680A | 2006-09-19 |
Attorney, Agent or Firm:
TDIP & PARTNERS (CN)
北京同达信恒知识产权代理有限公司 (CN)
北京同达信恒知识产权代理有限公司 (CN)
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