Low Complexity Detection of Spatial Modulation Aided OTFS in Doubly-Selective Channels

A spatial modulation-aided orthogonal time frequency space (SM-OTFS) scheme is proposed for high-Doppler scenarios, which relies on a low-complexity distance-based detection algorithm. We first derive the delay-Doppler (DD) domain input-output relationship of our SM-OTFS system by exploiting an SM m...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on vehicular technology 2023-10, Vol.72 (10), p.1-6
Main Authors: Sui, Zeping, Zhang, Hongming, Xin, Yu, Bao, Tong, Yang, Lie-Liang, Hanzo, Lajos
Format: Article
Language:English
Subjects:
Algorithms
Channels
Complexity
Complexity theory
Detectors
distance-based detection
doubly-selective channels
Modulation
ordering-based detection
orthogonal time frequency space (OTFS)
Spatial modulation (SM)
Symbols
Time-domain analysis
Transforms
Wireless communication
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A spatial modulation-aided orthogonal time frequency space (SM-OTFS) scheme is proposed for high-Doppler scenarios, which relies on a low-complexity distance-based detection algorithm. We first derive the delay-Doppler (DD) domain input-output relationship of our SM-OTFS system by exploiting an SM mapper, followed by characterizing the doubly-selective channels considered. Then we propose a distance-based ordering subspace check detector (DOSCD) exploiting the a priori information of the transmit symbol vector. Moreover, we derive the discrete-input continuous-output memoryless channel (DCMC) capacity of the system. Finally, our simulation results demonstrate that the proposed SM-OTFS system outperforms the conventional single-input-multiple-output (SIMO)-OTFS system, and that the DOSCD conceived is capable of striking an attractive bit error ratio (BER) vs. complexity trade-off.
ISSN:0018-9545
1939-9359
DOI:10.1109/TVT.2023.3277788