一种降低OFDM系统PAPR的参数化整形脉冲

在应用脉冲整形（Ps）技术降低OFDM系统PAPR的基础上，提出一种新颖的参数化的Nyquist脉冲称之为参数化正切脉冲，此脉冲包含的设计参数k可以根据系统滚降系数届自由调整，从而尽量降低系统的PAPR。仿真结果表明，相比于常见的升余弦脉冲和反转指数脉冲，新提出的脉冲在降低PAPR性能和保证BER性能方面优势明显，是一种灵活低复杂度的降低OFDM系统PA—PR的脉冲整形方案。

A Parametric Shaping Pulse for PAPR Reduction in OFDM System

A new and parametric Nyquist pulse named as parametric tangent pulse is proposed for peak-to -average power ratio （PAPR） reduction in orthogonal frequency division multiplexing （OFDM） systems using pulse shaping . The proposed pulse contains a new design parameter, k, giving an additional degree of freedom to minimize PAPR for a given roll-off factor, ]3 . Simulation results indicate that the proposed pulse can achieve better performance in terms of PAPR reduction and bit error rate （BER） , as compared with the traditional raised cosine pulse and flipped-exponential pulse. It is an effective scheme with low complexity and high flexibility to reduce the PAPR of OFDM system by pulse shaping with the proposed parametric tangent Nyquist pulse.