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部分传输序列(PTS)是一种复杂度较高的减小正交频分复用(OFDM)系统峰均功率比(PAPR)的方法。文中介绍了两种降低PTS复杂度的方法,一种是m序列PTS,另一种是迭代移位线性搜索法PTS。并将这两种方法应用到基于IEEE802.16a的OFDM系统中,仿真表明这两种方法都能够降低PTS的复杂度,同时减小系统的PAPR。
Partial Transmission Sequence (PTS) is a more complex method to reduce the Peak-to-Average Power Ratio (PAPR) of Orthogonal Frequency Division Multiplexing (OFDM) systems. Two methods to reduce the complexity of PTS are introduced in this paper. One is m-sequence PTS and the other is iteratively shifted linear search (PTS). The two methods are applied to the OFDM system based on IEEE802.16a. Simulation shows that both methods can reduce the complexity of PTS and reduce the system PAPR.