A New Companding Method of The PAR Reduction in Underwater OFDM Communication System

被引：0
|
作者：
Yuan, Zhaokai [1 ]
Li, Zheng [1 ]
Sui, Tianyu [1 ]
Li, Yu [1 ]
Huang, Haining [1 ]
机构：
[1] Chinese Acad Sci, Inst Acoust, Beijing, Peoples R China
来源：
2010 6TH INTERNATIONAL CONFERENCE ON WIRELESS COMMUNICATIONS NETWORKING AND MOBILE COMPUTING (WICOM) | 2010年
关键词：
companding; PAR; OFDM; AVERAGE POWER RATIO;
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：
The high peak-to-average (PAR) power ratio is one of the major problems in orthogonal frequency division multiplexing (OFDM) modulation system. In this paper, we present a new companding transform which is called YL transform. With this method, the distribution of time domain samples is transformed into uniform distribution and the PAR is reduced from 12dB to 4.6dB for 256-channel QPSK OFDM. Furthermore, the YL-Transform is easy to implement and costs less computation which is also can transform any kind of distribution into uniform.
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页数：4
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