基于状态空间分类的Multi-h CPM序列检测算法  

Multi-h CPM sequence detection algorithm based on state-space partitioning

作　　者：杨文革 上官泽胤 YANG Wenge;SHANGGUAN Zeyin(Department of Electronic and Optical Engineering,University of Space Engineering,Beijing 101416,China)

机构地区：[1]航天工程大学电子与光学工程系,北京101416

出　　处：《现代电子技术》2020年第5期1-5,共5页Modern Electronics Technique

摘　　要：考虑到Multi-h CPM信号序列检测复杂度较高,难以工程实现,在最大似然序列检测的基础上,针对该算法后端复杂的网格状态,提出基于状态空间分类的Multi-h CPM序列检测算法。通过引入倾斜相位,避免了区分调制指数分子为奇数和偶数的问题,利用状态空间分类合并的方法,大大简化了执行维特比算法所需的网格状态,并引入判决反馈原理,提高了误码性能。最后对ARTM TierⅡ信号进行仿真,结果表明,该算法可将网格状态减少为最大似然序列检测算法网格状态数的1/32,在10-5误码率下的性能损失仅为0.6 dB。Since the Multi-h CPM(Continuous Phase Modulation)signal sequence detection is of high complexity,which is difficult to be realized in engineering,a Multi-h CPM sequence detection algorithm based on state-space partitioning(SSP)is proposed on the basis of maximum likelihood sequence detection(MLSD)to deal with the complex grid state at the back end of the algorithm.The tilted phase is introduced to avoid distinguishing odd modulation index molecules from even ones.The grid state required in the implementation of Viterbi algorithm is greatly simplified with the method of SSP and merging,and the decision feedback principle is introduced to reduce the error code.The ARTM TierⅡsignal wassimulated.The results show that the algorithm can reduce the grid state quantity to 1/32 of that of the MLSD algorithm,and the performance loss at the bit error rate of 10-5 is only 0.6 dB.

关 键 词：Multi-h CPM 序列检测 网格状态简化 最大似然序列检测 倾斜相位 状态空间分类 判决反馈 

分 类 号：TN911.6-34[电子电信—通信与信息系统]