减小子波包调制波形功率比值的方法

A new method of reducing PAPR of wavelet packet modulation signals

针对子波包调制信号存在高的峰值功率与平均功率比值 (PAPR)的问题 ,研究并比较了选择性映射和部分传输序列两种方法 ,在此基础上 ,提出了一种新的减小子波包调制信号PAPR的方法———循环移位线性搜索法 ,并通过计算机仿真分析了这种方法的性能 .结果表明 ,循环移位线性搜索法是一种改进的部分传输序列方法 ,在性能和计算复杂度之间取得了较好的折衷 .

This paper investigates and compares two methods of Selective Mapping (SLM) and Partial Transmit Sequences (PTS) as a solution of high PAPR of Wavelet Packet Modulation signals, on the basis of which we present a new method-Iterative Shifting Linear Searching, and analyze its performance via computer simulation. The result of simulation shows that Iterative Shifting Linear Searching is a kine of advanced PTS and achieves a good compromise between performance and complexity of computation.