CAJ | 학술논문

针对多调制指数连续相位调制全状态序列检测复杂度较高的问题，提出一种基于倾斜相位、特征值分解和状态空间分类的M ulti‐h CPM低复杂度序列检测算法。利用特征值分解获得信号降秩表示，将信号状态进行分类融合，得到减少状态网格，引入判决反馈进行状态转移约束，实现匹配滤波器和状态数的减少。给出最大似然序列检测误码性能下界并进行仿真实验，实验结果表明，以ARTM CPM TierII信号为例，该算法可将匹配滤波器数减少为全状态所需的3／64，网格状态减少为全状态所需的1／8，在误码率为10－5时性能损失仅为0.2 dB。
침대다조제지수련속상위조제전상태서렬검측복잡도교고적문제，제출일충기우경사상위、특정치분해화상태공간분류적M ulti‐h CPM저복잡도서렬검측산법。이용특정치분해획득신호강질표시，장신호상태진행분류융합，득도감소상태망격，인입판결반궤진행상태전이약속，실현필배려파기화상태수적감소。급출최대사연서렬검측오마성능하계병진행방진실험，실험결과표명，이ARTM CPM TierII신호위례，해산법가장필배려파기수감소위전상태소수적3／64，망격상태감소위전상태소수적1／8，재오마솔위10－5시성능손실부위0.2 dB。
A reduced‐complexity sequence detection algorithm for Multi‐h CPM signals based on tilted phase combined with ei‐genvalue decomposition (EVD) and state‐space partitioning (SSP) was proposed to solve the complexity‐reducing problem .The optimal low‐rank approximation was achieved through the eigenvalue decomposition of the signal correlation matrix .A reduced‐states trellis was formed through classifying and fusing states and decision feedback was introduced to restrain the states transi‐tion .In this way ,the number of filter and states was reduced .Results of analysis and simulation show that the algorithm can re‐duce the number of match filters and trellis states sharply with low cost .For ARTM CPM ,it can cut the amount of match filters and states down to 3/64 and 1/8 of the original respectively with 0.2 dB loss when the error probability is 10-5 .