A New Method for PAR Reduction of OFDM Signal Based on Chaotic Encoder

被引：0
|
作者：
Guo, Yong [1 ]
Huang, Liang [1 ]
机构：
[1] Beijing Jiaotong Univ, Sch Elect & Informat Engn, Beijing, Peoples R China
来源：
2010 6TH INTERNATIONAL CONFERENCE ON WIRELESS COMMUNICATIONS NETWORKING AND MOBILE COMPUTING (WICOM) | 2010年
关键词：
orthogonal frequency division mulitiplexing; component; peak-to-average power ratio; chaotic encoder; nonlinear digital filter; AVERAGE POWER REDUCTION; COMPLEMENTARY SEQUENCES;
D O I：
暂无
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
In this paper, we propose using chaotic digital filter to encode the time domain signal x(n) to reduce peak-to-average power ratio (PAR) in OFDM system. The x(n) may have high PAR value, which is a main drawback of OFDM system. The time domain signal becomes chaotically distributed by chaotic encoding, so the PAR value can be reduced. Simulations are done for numbers of subcarriers being 16, 32, 64, 128, 256 and 512. The simulation results show that this method can greatly reduce the PAR of OFDM signal. The chaotic encoder and decoder are easy to be implemented in hardware. In addition, the code rate is equal to the original code rate. Moreover, this method is applicable to all kinds of modulation, because chaotic encoder operates on the time domain signal.
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页数：4
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