On Iterative Compensation of Clipping Distortion in OFDM Systems

被引：14

作者：

Liang, Shansuo ^{[1
]}

Tong, Jun ^{[2
]}

Ping, Li ^{[1
]}

机构：

[1] City Univ Hong Kong, Dept Elect Engn, Hong Kong, Peoples R China

[2] Univ Wollongong, Sch Elect Comp & Telecommun Engn, Wollongong, NSW 2522, Australia

来源：

IEEE WIRELESS COMMUNICATIONS LETTERS | 2019年 / 8卷 / 02期

关键词：

OFDM; clipping; linearization; iterative compensation; decorrelation; CANCELLATION;

D O I：

10.1109/LWC.2018.2874935

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

We consider an iterative compensation method to treat clipping distortion in orthogonal frequency division multiplexing systems with clipping. A conventional approach is using extrinsic information (EI) from a decoder to estimate and cancel clipping distortion iteratively. In this letter, feedback in the form of a posteriori information (API) from the decoder is investigated. Correlation may be introduced among messages in iterative processing when API is directly used as feedback. We show that carefully choosing a linearization model can suppress such correlation. Simulation results show that the API approach outperforms the EI one.

引用

页码：436 / 439

页数：4

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