Peak-to-Average Power Ratio Reduction in MC-CDMA Systems by Using Partial Transmit Sequence Schemes

Wu Lin-jun; Zhu Shi-hua; Feng Xing-le

Volume 27 Issue 4

Apr. 2005

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Article Navigation > Journal of Electronics & Information Technology > 2005 > 27(4): 599-602

Wu Lin-jun, Zhu Shi-hua, Feng Xing-le . Peak-to-Average Power Ratio Reduction in MC-CDMA Systems by Using Partial Transmit Sequence Schemes[J]. Journal of Electronics & Information Technology, 2005, 27(4): 599-602.

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Wu Lin-jun, Zhu Shi-hua, Feng Xing-le . Peak-to-Average Power Ratio Reduction in MC-CDMA Systems by Using Partial Transmit Sequence Schemes[J]. Journal of Electronics & Information Technology, 2005, 27(4): 599-602.

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Peak-to-Average Power Ratio Reduction in MC-CDMA Systems by Using Partial Transmit Sequence Schemes

Received Date: 2004-05-08
Rev Recd Date: 2004-11-19
Publish Date: 2005-04-19

Abstract

Abstract

The un-uniform adjacent subcarrier partition method is proposed in order to reduce the Peak-to-Average power Ratio (PAR) of the signal in MultiCarrier-CDMA(MC-CDMA) systems by using Partial Transmit Sequence (PTS) scheme. That is reducing the number of subcarriers of high and low frequencies within a data block, and enhancing the number of subcarriers of intermediate frequencies if considering all subcarriers frequency as an band of frequency. When the number of subcarriers of the intermediate frequency within a data block is double of the number of subcarriers of the high (or low) frequencies, the PAR reduces 0.2dB comparing with that of the uniform partition. The Ganetic Algorithm(GA) is proposed in order to reduce the iterative number when the space of rotate-matrix is very big. By 60 generations evolution, the optimum value can be obtained. The results of simulation validate the proposed method.

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References(1)

References

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