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
收藏
页码：436 / 439
页数：4
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