TY - JOUR
T1 - Quadrature spatial modulation based orthogonal time frequency spatial system
AU - Cai, Yueying
AU - Bai, Zhiquan
AU - Liu, Hongwu
AU - Yang, Yingchao
AU - Pang, Ke
AU - Hao, Xinhong
AU - Cao, Yewen
N1 - Publisher Copyright:
© 2022 Elsevier GmbH
PY - 2023/2
Y1 - 2023/2
N2 - In this paper, we take the spatial and delay-Doppler dimensions into account and propose a novel transmission scheme combining quadrature spatial modulation (QSM) and orthogonal time frequency space (OTFS) to improve the spectral efficiency, achieve the diversity gains, and resist strong Doppler effect in high-mobility scenes. The system model and the specific signal transmission process of the OTFS with QSM (QSM-OTFS) scheme are presented first. Then, the theoretical average bit error rate (ABER) analysis for QSM-OTFS system is provided. Additionally, a linear enhanced minimum mean square error (EMMSE) detection is investigated to reduce the detection complexity in the QSM-OTFS system. Numerical results illustrate that the QSM-OTFS system is able to obtain an improved ABER performance compared with the typical spatial modulation (SM) based OTFS (SM-OTFS) and that the proposed EMMSE detection outperforms the other linear detection algorithms under the same spectral efficiency.
AB - In this paper, we take the spatial and delay-Doppler dimensions into account and propose a novel transmission scheme combining quadrature spatial modulation (QSM) and orthogonal time frequency space (OTFS) to improve the spectral efficiency, achieve the diversity gains, and resist strong Doppler effect in high-mobility scenes. The system model and the specific signal transmission process of the OTFS with QSM (QSM-OTFS) scheme are presented first. Then, the theoretical average bit error rate (ABER) analysis for QSM-OTFS system is provided. Additionally, a linear enhanced minimum mean square error (EMMSE) detection is investigated to reduce the detection complexity in the QSM-OTFS system. Numerical results illustrate that the QSM-OTFS system is able to obtain an improved ABER performance compared with the typical spatial modulation (SM) based OTFS (SM-OTFS) and that the proposed EMMSE detection outperforms the other linear detection algorithms under the same spectral efficiency.
KW - Average bit error rate (ABER)
KW - Delay-Doppler
KW - Minimum mean square error (MMSE)
KW - Orthogonal time frequency space (OTFS)
KW - Quadrature spatial modulation (QSM)
UR - http://www.scopus.com/inward/record.url?scp=85144257953&partnerID=8YFLogxK
U2 - 10.1016/j.aeue.2022.154495
DO - 10.1016/j.aeue.2022.154495
M3 - Article
AN - SCOPUS:85144257953
SN - 1434-8411
VL - 160
JO - AEU - International Journal of Electronics and Communications
JF - AEU - International Journal of Electronics and Communications
M1 - 154495
ER -