Generalized Approximate Message Passing Detector for GSM-OTFS Systems

Tiebin Wang; Shiwen Fan; Hao Chen; Yue Xiao; Xuemei Guan; Wenlong Song

doi:10.1109/ACCESS.2022.3153703

IEEE Access (Jan 2022)

Generalized Approximate Message Passing Detector for GSM-OTFS Systems

Tiebin Wang,
Shiwen Fan,
Hao Chen,
Yue Xiao,
Xuemei Guan,
Wenlong Song

Affiliations

Tiebin Wang: ORCiD; Information and Computer Engineering College, Northeast Forestry University, Harbin, China
Shiwen Fan: ORCiD; National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China, Chengdu, China
Hao Chen: ORCiD; National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China, Chengdu, China
Yue Xiao: ORCiD; National Key Laboratory of Science and Technology on Communications, University of Electronic Science and Technology of China, Chengdu, China
Xuemei Guan: ORCiD; College of Mechanical and Electrical Engineering, Northeast Forestry University, Harbin, China
Wenlong Song: ORCiD; College of Mechanical and Electrical Engineering, Northeast Forestry University, Harbin, China

DOI: https://doi.org/10.1109/ACCESS.2022.3153703
Journal volume & issue: Vol. 10
pp. 22997 – 23007

Abstract

Read online

Orthogonal Time Frequency Space (OTFS) as a two-dimensional modulation scheme designed in the delay-Doppler domain, is realized by inverse symplectic finite Fourier transform (ISFFT) and symplectic finite Fourier transform (SFFT), for combating the high Doppler channels toward future wireless communications. Meanwhile, generalized spatial modulation (GSM) offers an efficient implementation for multi-input multi-output (MIMO) systems, by activating only part of the transmit antennas to alleviate inter-channel interference (ICI). In this paper, the combination of the above two concepts is exploited, for bridging their unique advantages. On the other hand, an iterative detector based on generalized approximate message passing (GAMP) is also developed for GSM-OTFS. Simulation results demonstrate that the proposed GAMP detector can achieve better performance than the conventional minimum mean square error (MMSE) detector.

Published in IEEE Access

ISSN: 2169-3536 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering
Website: https://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=6287639

About the journal

Abstract

Keywords