DocumentCode
2564342
Title
A New Companding Method of the PAR Reduction in Underwater OFDM Communication System
Author
Yuan, Zhaokai ; Li, Zheng ; Sui, Tianyu ; Li, Yu ; Huang, Haining
Author_Institution
Inst. of Acoust., Chinese Acad. of Sci., Beijing, China
fYear
2010
fDate
23-25 Sept. 2010
Firstpage
1
Lastpage
4
Abstract
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.
Keywords
OFDM modulation; compandors; underwater acoustic communication; PAR reduction; companding method; time domain samples; underwater OFDM communication system; uniform distribution; Bit error rate; Communication systems; Gaussian distribution; Peak to average power ratio; Receivers; Transforms;
fLanguage
English
Publisher
ieee
Conference_Titel
Wireless Communications Networking and Mobile Computing (WiCOM), 2010 6th International Conference on
Conference_Location
Chengdu
Print_ISBN
978-1-4244-3708-5
Electronic_ISBN
978-1-4244-3709-2
Type
conf
DOI
10.1109/WICOM.2010.5601206
Filename
5601206
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