文献类型：期刊文献

英文题名：EP-Based Turbo Receiver for Single-Carrier Index Modulation: A Vector-Wise Implementation

作者：Cai, Yuekai[1]; Dong, Chao[1]; Zhang, Zhengzhen[2]; Xu, Wenbo[1]; Niu, Kai[1]

第一作者：Cai, Yuekai

机构：[1] Beijing University of Posts and Telecommunications, Key Laboratory of Universal Wireless Communications, Ministry of Education, Beijing, 100876, China; [2] Beijing Union University, Smart City College, Beijing, 100024, China

第一机构：Beijing University of Posts and Telecommunications, Key Laboratory of Universal Wireless Communications, Ministry of Education, Beijing, 100876, China

通讯机构：[1]Beijing University of Posts and Telecommunications, Key Laboratory of Universal Wireless Communications, Ministry of Education, Beijing, 100876, China

年份：2024

外文期刊名：IEEE Transactions on Communications

收录：EI(收录号：20244417294056);Scopus(收录号：2-s2.0-85207394042)

语种：英文

外文关键词：Gaussian distribution - Health risks - Signal modulation - Time domain analysis - Turbo codes

摘要：We consider the turbo frequency domain equalization (FDE) approach based on expectation propagation (EP) to the single-carrier with index modulation (SCIM) transmission over frequency-selective channels. The SCIM-FDE system implements vector-by-vector signal transmission in the time domain, in which elements within each transmitted symbol vector display correlation. In this paper, we propose a novel vector-wise EP (VW-EP) equalization, where the discrete prior distribution of each symbol vector is approximated with a multivariate complex Gaussian distribution. Hence the extrinsic information in the EP feedback is extended to be in terms of the mean vector and covariance matrix. The effectiveness of the proposed scheme can be validated through the error-correction performance and extrinsic information transfer (EXIT) analysis. Numerical results show that the SCIM-FDE transmission with the VW-EP turbo equalization demonstrates remarkable performance. ? 1972-2012 IEEE.