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压扩与预失真结合的峰均功率比抑制方法

, PP. 1172-1175

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Abstract:

针对压扩法中峰均功率比抑制与系统误码率之间的矛盾,提出了一种压扩与预失真结合的方法.用Bussgang定理推导出正交频分复用信号经过非线性功率放大器后,在加性高斯白噪声信道下子载波信噪比的计算公式.用理想预失真代替非线性功放,再对线性压扩法进行改进.用理想预失真和改进后线性压扩的3个参数修改子载波信噪比计算公式,进而得到系统误码率.仿真结果表明通过调整3个参数,在获得相同峰均比抑制效果及误码率的情况下,所提出方法的信噪比门限改善了0.8dB.

References

[1]  Huang Xiao,Lu Jianhua,Zheng Junli,et al.Companding transform for reduction in peak-to-average power ratio of OFDM signals [J].IEEE Transactions on Wireless Communications,2004,3(6):2030-2039
[2]  Jeng Shiann-Shiun,Chen Jia-Ming.Efficient PAPR reduction in OFDM systems based on a companding technique with trapezium distribution [J].IEEE Transactions on Broadcasting,2011,57(2): 291-298
[3]  Aburakhia S A,Badran E F,Mohamed D A E.Linear companding transform for the reduction of peak-to-average power ratio of OFDM signals [J].IEEE Transactions on Broadcasting,2009,55(1): 155-160
[4]  Saleh A.Frequency-independent and frequency-dependent nonlinear models of TWT amplifiers[J].IEEE Transactions on Communications,1981,29(11):1715-1720
[5]  Banelli P,Cacopardi S.Theoretical analysis and performance of OFDM signals in nonlinear AWGN channels [J].IEEE Transactions on Communications,2000,48(3):430-441
[6]  Papoulis A.Probability,random variables and stochastic process [M].Third edition.New York:McGraw-Hill,1991:307-308
[7]  Kaye A R,George D A,Eric M J.Analysis and compensation of bandpass nonlinearities for communications [J].IEEE Transactions on Communications,1972,20(5):965-972
[8]  Prudnikov A P,Brychkov Yu A,Marichev O I.Integrals and series [M].New York:Gordon and Breach,1986:457-475

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