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射频信道非线性失真对多载波数字通信的影响及常用线性化技术分析
校莉
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(中国西南电子技术研究所，成都 610036)

摘要:

讨论了信道非线性特性引起的各种失真特性，利用仿真软件比较了信道非线性对单载波和多载波数字通信的影响，总结并分析了目前常用的信道线性化技术，对于高频段多载波数字通信系统射频信道的线性化设计具有一定的指导意义。

关键词: 多载波通信射频信道非线性失真信道线性化交调干扰 Doherty功放

DOI：

基金项目:

Impact of Non linear Distortion of RF Channel on Multi carrier Communication Systems and Analysis of Commonly-used Linearization Technology

XIAO Li

(Southwest China Institute of Electronic Technology，Chengdu 610036，China)

Abstract:

The distortions caused by nonlinear characteristic of RF channels are discussed.The impacts of nonline a r channel on monocarrier and multicarrier digital communication are compared through simulation.The commonly-used linearization technology for compensating nonlinear distortions is summarized and analysed.The research and conclusions can provide impo rtant reference for the design of RF channels linearization in high frequency mu lticarrier digital communication systems.

Key words: multi carrier communication RF channel non linear distortion channel lineari zation cross modulation Doherty power amplifier