A Low-Complexity PAPR Reduction Scheme for SFBC MIMO-OFDM Systems

被引：44

作者：

Wang, Sen-Hung ^{[1
]}

Li, Chih-Peng ^{[1
,2
]}

机构：

[1] Natl Sun Yat Sen Univ, Dept Elect Engn, Kaohsiung 804, Taiwan

[2] Natl Sun Yat Sen Univ, Inst Commun Engn, Kaohsiung 804, Taiwan

来源：

IEEE SIGNAL PROCESSING LETTERS | 2009年 / 16卷 / 11期

关键词：

Multiple-input multiple-output (MIMO); orthogonal frequency division multiplexing (OFDM); peak-to-average power ratio (PAPR); space-frequency block coding (SFBC); AVERAGE POWER RATIO;

D O I：

10.1109/LSP.2009.2027205

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) system with space-frequency block coding (SFBC) is an attractive technique due to its robustness for time selective fading channels. However, the SFBC MIMO-OFDM system also inherits from OFDM systems the drawback of high peak-to-average power ratio (PAPR) of the transmitted signal. The selected mapping (SLM) method is a major scheme for PAPR reduction. Unfortunately, computational complexity of the traditional SLM scheme is relatively high since it requires a number of inverse fast Fourier transforms (IFFTs). In this letter, a low-complexity PAPR reduction scheme is proposed for SFBC MIMO-OFDM systems, needing only one IFFT. The proposed scheme exploits the time-domain signal properties of SFBC MIMO-OFDM systems to achieve a low-complexity architecture for candidate signal generation.

引用

页码：941 / 944

页数：4

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