基于脉冲成型的降低FBMC系统峰均比方法
4结语
脉冲成型技术是OFDM系统中降低PAPR的有效方法,笔者结合FBMC中原型滤波器及其多项结构,将脉冲成型技术应用到FBMC系统中,从而降低了PAPR。该方法容易实现,通过在综合滤波器S/P后添加频率加权即可实现时域的循环位移,从而达到降低峰均比的目的。通过仿真实验验证了笔者对该方法在FBMC系统中适用的理论假设和推导,仿真结果表明,在FBMC系统中引入PS技术后,峰均比有了明显下降。
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