Peak-to-average power ratio reduction in space-time block coded multi-input multi-output orthogonal frequency division multiplexing systems using a small overhead selective mapping scheme

被引:19
|
作者
Hassan, E. S. [1 ]
El-Khamy, S. E. [2 ]
Dessouky, M. I. [1 ]
El-Dolil, S. A. [1 ]
El-Samie, F. E. Abd [1 ]
机构
[1] Menoufia Univ, Dept Elect & Elect Commun, Fac Elect Engn, Menoufia 32952, Egypt
[2] Univ Alexandria, Fac Engn, Dept Elect Engn, Alexandria 21544, Egypt
关键词
PAPR REDUCTION; OFDM SIGNALS; SLM;
D O I
10.1049/iet-com.2008.0565
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 selective mapping (SLM) scheme is one of the most popular peak-to-average power ratio (PAPR) reduction techniques proposed for multi-input multi-output orthogonal frequency division multiplexing (MIMO-OFDM) systems. One of the major disadvantages of this scheme is the need for the transmission of side information ( SI) bits to enable the receiver to recover the transmitted data. The authors present a small overhead SLM (s-SLM) scheme for space-time block coded (STBC) MIMO-OFDM systems. This proposed scheme improves the system bandwidth efficiency and achieves a significantly lower bit error rate (BER) than the individual SLM (i-SLM) and direct SLM (d-SLM) schemes. In addition, approximate expressions for the complementary cumulative distribution function (CCDF) of the PAPR and the average BER of the proposed s-SLM scheme are derived. The simulation results show that the proposed s-SLM scheme improves the detection probability of the SI bits and hence gives a better performance than the i-SLM and the d-SLM schemes.
引用
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页码:1667 / 1674
页数:8
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