Combining of Cyclically Delayed Signals: A Low-Complexity Scheme for PAPR Reduction in OFDM Systems

被引：10
|
作者：
Wang, Jin Soo [1 ]
Lee, Ji Hye [1 ]
Park, Jae Cheol [1 ]
Song, Iickho [2 ]
Kim, Yun Hee [1 ]
机构：
[1] Kyung Hee Univ, Dept Elect & Radio Engn, Yongin 446701, South Korea
[2] Korea Adv Inst Sci & Technol, Dept Elect Engn, Taejon 305701, South Korea
来源：
IEEE TRANSACTIONS ON BROADCASTING | 2010年 / 56卷 / 04期
关键词：
Cyclically delayed signal; linear combining; orthogonal frequency division multiplexing; peak-to-average power ratio; AVERAGE POWER RATIO; COMPANDING TECHNIQUE; SLM;
D O I：
10.1109/TBC.2010.2060174
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：
Based on superposition of signals in the time domain, we propose a new low-complexity scheme for the reduction of the peak-to-average power ratio (PAPR) in orthogonal frequency division multiplexing (OFDM) systems. The proposed scheme first generates signal candidates by combining an OFDM signal and its cyclically delayed versions with different delays and phases, and then selects the candidate signal with minimum PAPR. It is shown that the complexity of the proposed scheme is significantly lower than that of the selective mapping (SLM) at the cost of some degradation in the bit error rate (BER) performance and, at similar PAPR and coded BER performance, is lower than that of the low-complexity SLM proposed recently.
引用
收藏
页码：577 / 583
页数：7
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