A Novel Compensation Method of Nonlinear Distortions in OFDM System

Jing Yang, X. Mu, Shou-yi Yang, Lin Qi
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引用次数: 0

Abstract

In recent years, there has been increasing interest in OFDM (orthogonal frequency division multiplexing) applying to the mobile communication system in terms of considering its various advantages in combating the severe effects of the frequency selective fading. However, the OFDM system suffers from the strong sensitivity to the nonlinear distortion, introduced by the transmitting high power amplifier (HPA), since the OFDM system has the high peak-to-average power ratio (PAPR). Based on the analyzation of some classic nonlinear compensation methods, we propose a new approach to compensate the nonlinearity in this paper. Its performance is verified through computer simulations. Specifically, the enhanced performance in terms of the bit error rate (BER) is documented for the traveling wave tube (TWT) HPA model.
一种新的OFDM系统非线性失真补偿方法
近年来,考虑到正交频分复用技术在对抗频率选择性衰落方面的种种优势,人们对其应用于移动通信系统越来越感兴趣。然而,由于OFDM系统具有较高的峰均功率比(PAPR), OFDM系统对发射高功率放大器(HPA)引入的非线性失真具有较强的敏感性。本文在分析几种经典非线性补偿方法的基础上,提出了一种新的非线性补偿方法。通过计算机仿真验证了其性能。具体来说,行波管(TWT) HPA模型在误码率(BER)方面的性能得到了提高。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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