Iterative clipping recovery in spatially multiplexed OFDM systems

被引：1

作者：

Naeiny, M. Ferdosizadeh ^{[1
]}

Marvasti, F. ^{[1
]}

机构：

[1] Sharif Univ Technol, Sch Elect Engn, Dept Elect Engn, Tehran, Iran

来源：

SCIENTIA IRANICA | 2012年 / 19卷 / 03期

关键词：

Spatial multiplexing; OFDM; MMSE; NC; PAPR; Soft decoding; AVERAGE POWER RATIO; ACTIVE CONSTELLATION EXTENSION; PAPR REDUCTION; LOW-COMPLEXITY; PAR REDUCTION; NOISE; CANCELLATION; SCHEME; CODES;

D O I：

10.1016/j.scient.2011.04.030

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Clipping and filtering is a well-known technique used at the transmitter side of Orthogonal Frequency Division Multiplexing (OFDM) systems to reduce the Peak to Average Power Ratio (PAPR). In this paper, the extension of clipping and filtering to spatially multiplexed OFDM systems will be introduced. In the proposed scheme, the channel coding and clipping operations are performed at the transmitter branches independently. Based on this scheme, a receiver is proposed, which is based on the detection method of Nulling Cancellation (NC). In this method, the layer with the minimum average noise power over all subcarriers is selected and an iterative method is used to compensate for its clipping noise. Then, the effect of the signal of the selected antenna is eliminated from the received vectors. (C) 2012 Sharif University of Technology. Production and hosting by Elsevier B.V. All rights reserved.

引用

页码：739 / 744

页数：6

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