Iterative estimation and cancellation of clipping noise for OFDM signals

被引：171

作者：

Chen, HJ ^{[1
]}

Haimovich, AM ^{[1
]}

机构：

[1] New Jersey Inst Technol, Dept Elect & Comp Engn, Newark, NJ 07102 USA

来源：

IEEE COMMUNICATIONS LETTERS | 2003年 / 7卷 / 07期

基金：

美国国家科学基金会;

关键词：

clipping noise; iterative method; orthogonal frequency division multiplexing (OFDM);

D O I：

10.1109/LCOMM.2003.814720

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

Clipping is an efficient and simple method to reduce the peak-to-average power ratio (PAPR) of orthogonal frequency division multiplexing (OFDM) signals. However, clipping causes distortion and out-of-band radiation. In this letter, a novel iterative receiver is proposed to estimate and cancel the distortion caused by clipping noise. The proposed method is applied to clipped and filtered OFDM signals. It is shown by simulation that for an IEEE 802.11a typical scenario the system performance can be restored to within 1 dB of the nonclipped case with only moderate complexity increase and with no bandwidth expansion.

引用

页码：305 / 307

页数：3

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