一种低复杂度的连续相位调制序列检测接收机

连续相位调制（CPM）以其较高的功率有效性和带宽利用率，在无线通信领域尤其是军事通信领域得到广泛应用。给出了一种连续相位调制的低复杂度序列检测接收机，通过对发送信号进行正交处理来减少接收机前端的匹配滤波器个数；在序列检测阶段通过状态融合减少维特比译码的状态数，然后结合判决反馈进行检测。分析和仿真表明，该算法与最优最大似然序列检测（MLSD）相比，能有效地简化运算复杂度而性能损失较小。

A low-complexity sequence detection algorithm for CPM

Continuous Phase Modulation（CPM） is widely used in wireless communications especially in military communications due to its high power and bandwidth efficiency. A low-complexity sequence detection receiver for CPM was designed in this study. The number of matched filters in the receiver front was reduced by orthogonalizing process. The states of Viterbi decoding were reduced through the state combination. The signal was detected combined with the decision feedback. AnMysis and simulation results showed that the algorithm efficiently reduced the computation complexity at a very little sacrifice of performance compared with the optimum Maximum Likelihood Sequence Detection（MLSD）.