Low-complexity selected mapping scheme using cyclic-shifted inverse fast Fourier transform for peak-to-average power ratio reduction in orthogonal frequency division multiplexing systems

被引：10

作者：

Kim, Kee-Hoon ^{[1
]}

Jeon, Hyun-Bae ^{[1
]}

No, Jong-Seon ^{[1
]}

Shin, Dong-Joon ^{[2
]}

机构：

[1] Seoul Natl Univ, INMC, Dept Elect & Comp Engn, Seoul 151744, South Korea

[2] Hanyang Univ, Dept Elect Engn, Seoul 133791, South Korea

来源：

IET COMMUNICATIONS | 2013年 / 7卷 / 08期

基金：

新加坡国家研究基金会;

关键词：

PAPR REDUCTION; OFDM; PERFORMANCE; SEQUENCES;

D O I：

10.1049/iet-com.2012.0761

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：

In this study, a new peak-to-average power ratio (PAPR) reduction scheme for orthogonal frequency division multiplexing (OFDM) is proposed based on the selected mapping (SLM) scheme. The proposed SLM scheme generates alternative OFDM signal sequences by cyclically shifting the connections in each subblock at an intermediate stage of inverse fast Fourier transform (IFFT). Compared with the conventional SLM scheme, the proposed SLM scheme achieves similar PAPR reduction performance with much lower computational complexity and no bit error rate degradation. The performance of the proposed SLM scheme is analysed mathematically and verified through numerical analysis. Also, it is shown that the proposed SLM scheme has the lowest computational complexity among the existing low-complexity SLM schemes exploiting the signals at an intermediate stage of IFFT.

引用

页码：774 / 782

页数：9

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