A PAPR Reduction Method Based on Artificial Bee Colony Algorithm for OFDM Signals

被引：87

作者：

Wang, Yajun ^{[1
,2
]}

Chen, Wen ^{[1
]}

Tellambura, Chintha ^{[3
]}

机构：

[1] Shanghai Jiao Tong Univ, Dept Elect Engn, Shanghai 200240, Peoples R China

[2] Xidian Univ, State Key Lab Integrated Serv Networks, Xian, Peoples R China

[3] Univ Alberta, Dept Elect & Comp Engn, Edmonton, AB T6G 2V4, Canada

来源：

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | 2010年 / 9卷 / 10期

关键词：

PTS; PAPR; OFDM; ABC; AVERAGE POWER-RATIO; COMPUTATION; SEQUENCES; PAR;

D O I：

10.1109/TWC.2010.081610.100047

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：

One of the major drawbacks of orthogonal frequency division multiplexing (OFDM) signals is the high peak to average power ratio (PAPR) of the transmitted signal. Many PAPR reduction techniques have been proposed in the literature, among which, partial transmit sequence (PTS) technique has been taken considerable investigation. However, PTS technique requires an exhaustive search over all combinations of allowed phase factors, whose complexity increases exponentially with the number of sub-blocks. In this paper, a newly suboptimal method based on modified artificial bee colony (ABC-PTS) algorithm is proposed to search the better combination of phase factors. The ABC-PTS algorithm can significantly reduce the computational complexity for larger PTS subblocks and offers lower PAPR at the same time. Simulation results show that the ABC-PTS algorithm is an efficient method to achieve significant PAPR reduction.

引用

页码：2994 / 2999

页数：6

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