一种抑制OFDM系统峰均功率比的融合算法

A combined scheme for PAPR reduction in OFDM system

提出了一种抑制正交频分复用(OFDM)系统峰均功率比(PAPR)的融合算法,该算法在OFDM系统发射端对信号先后进行选择映射(SLM)和压扩变换,从而使信号的峰均比得到二次抑制。仿真结果说明了该算法对峰均比的抑制效果比单独使用SLM技术和压扩技术都有明显的改善,并且对于计算复杂度要求不高的OFDM系统,不同参数的综合技术可相互替代以提高系统的误码性能。

A combined scheme for PAPR（peak-to-average power ratio） reduction in OFDM（orthogonal frequency division multiplexing） system is proposed.The PAPR can be reduced twice by using SLM（selected mapping） technique and compounding technique.Simulation results show this method can get better PAPR performance than using the above techniques alone.In the OFDM system which has not too much requirement in computational complexity,the schemes with different parameters can be replaced each other to obtain better BER performance.