Performance of LDPC Coded OTFS Systems over High Mobility Channels  

作　　者：ZHANG Chong XING Wang YUAN Jinhong ZHOU Yiqing 

机构地区：[1]Beijing Key Laboratory of Mobile Computing and Pervasive Device,Beijing 100190,China [2]Institute of Computing Technology,Chinese Academy of Sciences,Beijing 100190,China [3]University of Chinese Academy of Sciences,Beijing 100049,China [4]Zhongke Nanjing Mobile Communication&Computing Innovation Institute,Nanjing 211135,China [5]School of Electrical Engineering and Telecommunications,University of New South Wales,Sydney NSW 2052,Australia

出　　处：《ZTE Communications》2021年第4期45-53,共9页中兴通讯技术（英文版）

基　　金：supported by National Key R&D Program of Chi⁃na(No.2020YFB1807802);the National Science Fund for Distinguished Young Scholars(No.61901453);Jiangsu Provincial Key Research and Development Program(No.BE2021013-2)。

摘　　要：The upcoming 6G wireless networks have to provide reliable communications in high-mobility scenarios at high carrier frequencies.However,high-mobility or high carrier frequencies will bring severe inter-carrier interference(ICI)to conventional orthogonal fre⁃quency-division multiplexing(OFDM)modulation.Orthogonal time frequency space(OTFS)modulation is a recently developing multi-carrier transmission scheme for wireless commu⁃nications in high-mobility environments.This paper evaluates the performance of coded OT⁃FS systems.In particular,we consider 5G low density parity check(LDPC)codes for OTFS systems based on 5G OFDM frame structures over high mobility channels.We show the per⁃formance of the OTFS systems with 5G LDPC codes when sum-product detection algorithm and iterative detection and decoding are employed.We also illustrate the effect of channel estimation error on the performance of the LDPC coded OTFS systems.

关 键 词：OTFS LDPC codes OFDM 

分 类 号：TN929.5[电子电信—通信与信息系统]