微波通信中连续相位调制的非相干检测算法

A noncoherent detection algorithm for CPM in microwave communication

提出了一种适合微波通信传输使用的多进制连续相位信号的频偏校正2码元差分检测算法。该算法利用2码元差分信息提取分支度量,进行维特比检测。同时利用判决反馈对微波通信中的载波频偏进行校正。通过对接收信号的复指数分解,分支度量的计算量得到了很大的简化。仿真结果表明,该算法的性能优于1码元差分检测。当接收信号存在载波频偏时,该算法仍然具有较好的检测性能。

A frequency-offset correction two symbol differential detection algorithm for multi-array CPM Signals in microwave communication is presented. The algorithm extract branch metric from the information of two symbol differential to detect the Viterbi. At the same time it corrects the carrier frequency offset by determined information. The complexity for computing branch metric is reduced by decomposing the received signals on complex exponent functions. Simulation results show its performance is better than one symbol differential. When the received signal has carrier frequency offset, it still has a good performance.