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正交频分复用(OFDM,Orthogonal Frequency Division Multiplex)系统中,有很多降低峰均比(PAPR,Peak to Average Power Ratio)的方法,部分传输序列算法(PTS)是其中的一个大类。研究了峰均功率比(PAPR)较高的原因,且着重研究了PTS算法的降低峰均比的效果,并给予仿真说明比较。在现有PARR降低算法的基础上,深入研究了改进的PTS算法与限幅算法之间的联合方法。比起获得同等优化的PTS-Clipping算法,改进PTS-Clipping算法降低了计算复杂度,工程实现简单,具有一定的实用价值。
There are many ways to reduce Peak to Average Power Ratio (PAPR) in Orthogonal Frequency Division Multiplex (OFDM) systems. Partial Transmission Sequence Algorithm (PTS) is one of them. The reason for the high PAPR is studied. The PTS algorithm is also studied to reduce the peak-to-average ratio. Simulation results are compared with those of the PTS algorithm. Based on the existing PARR reduction algorithm, the joint method between the improved PTS algorithm and the clipping algorithm is deeply studied. Compared with the same optimized PTS-Clipping algorithm, improving the PTS-Clipping algorithm reduces the computational complexity, the project is simple, and has some practical value.