基于Laurent分解的Multi-h CPM简化接收机研究

Research on Multi-h CPM Simplified Receiver Based on Laurent Decomposition

在最大似然接收机的基础上,提出了一种基于Laurent分解的Multi-h CPM简化接收机。详细介绍了多进制Multi-h CPM信号的Laurent分解原理,对分解后的脉冲进行信号重构,验证Multi-h CPM信号Laurent分解的正确性。通过PAM脉冲截断和平均两步处理,大大减小了接收机所需匹配滤波器的数目和网格状态。最后对ARTM TierⅡ信号进行仿真验证,结果表明:该接收机所需的匹配滤波器和网格状态数目分别为最大似然接收机的3/128和1/4,在10-5误码率下的性能损失仅为0. 2 d B。

A Multi-h CPM simplified receiver based on Laurent decomposition was proposed based on the maximum likelihood receiver.The principle of Laurent decomposition of M-ary Multi-h CPM signal was introduced in detail,and the signal reconstruction of the decomposed pulse was performed to verify the correctness of Laurent decomposition of Multi-h CPM signal.By PAM pulse truncation and average twostep processing,the number of matched filters required by the receiver and the grid state were greatly reduced.Finally,the ARTM TierⅡsignal was simulated and verified.The results show that the number of matched filters and grid states required by the receiver was respectively account for 3/128 and 1/4 of the maximum likelihood receivers,and the performance loss at the bit error rate is only 0.2 dB.