Low-complexity iterative equalization for OTFS based on alternating minimization

作     者：HE Xin JIA Haoxiang SUN Yutong ZHOU Zijian ZHAO Danfeng HE Xin;JIA Haoxiang;SUN Yutong;ZHOU Zijian;ZHAO Danfeng

作者机构：School of Information and Communication EngineeringHarbin Engineering UniversityHarbin 150001China 

出 版 物：《Journal of Systems Engineering and Electronics》 (系统工程与电子技术（英文版）)

年 卷 期：2023年第34卷第4期

页      面：851-860页

核心收录：

学科分类：080904[工学-电磁场与微波技术] 0810[工学-信息与通信工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080402[工学-测试计量技术及仪器] 0804[工学-仪器科学与技术] 0835[工学-软件工程] 081001[工学-通信与信息系统] 

基　　金：supported by the 54th Research Institute of China E lectronics Technology Group Corporation(SKX212010007) 

主　　题：orthogonal time frequency space(OTFS) alternating minimization(AM) high-speed mobile scenario iterative equalization 

摘      要：To achieve robust communication in high mobility scenarios,an iterative equalization algorithm based on alternating minimization(AM)is proposed for the orthogonal time frequency space(OTFS)*** algorithm approximates the equalization problem to a convex function optimization problem in the real-valued domain and solves the problem iteratively using the AM *** the iterative process,the complexity of the proposed algorithm is reduced further based on the study of the cyclic structure and sparse property of the OTFS channel matrix in the delay-Doppler(DD)*** new method for OTFS is simulated and verified in a high-speed mobile scenario and the results show that the proposed equalization algorithm has excellent bit error rate performance with low complexity.