Blind Signal Reception in Downlink Generalized Spatial Modulation Multiuser MIMO System Based on Minimum Output Energy

WU Wei-Chiang

doi:10.23919/cje.2022.00.113

Volume 33 Issue 2

Mar. 2024

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Wei-Chiang WU, “Blind Signal Reception in Downlink Generalized Spatial Modulation Multiuser MIMO System Based on Minimum Output Energy,” Chinese Journal of Electronics, vol. 33, no. 2, pp. 504–515, 2024 doi: 10.23919/cje.2022.00.113

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Wei-Chiang WU, “Blind Signal Reception in Downlink Generalized Spatial Modulation Multiuser MIMO System Based on Minimum Output Energy,” Chinese Journal of Electronics, vol. 33, no. 2, pp. 504–515, 2024 doi: 10.23919/cje.2022.00.113

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Blind Signal Reception in Downlink Generalized Spatial Modulation Multiuser MIMO System Based on Minimum Output Energy

doi: 10.23919/cje.2022.00.113

WU Wei-Chiang^,

1.
College of Mechanical and Electrical Engineering, Sanming University, Sanming 365004, China

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Author Bio:
Wei-Chiang WU received the M.S. and Ph.D. degrees both in electrical engineering from the Taiwan Tsing Hua University, Hsinchu, China, in 1992 and 1998, respectively. He has been a Professor at the Department of Electrical Engineering, Da-Yeh University, Changhua, China. He is now a Professor at the Department of College of Mechanical and Electrical Engineering, Sanming University, Sanming, China. His current research interests include multiuser MIMO detection, smart antenna technology, and spatial modulation technique. (Email: lclunds@163.com)
Corresponding author: Email: lclunds@163.com
Received Date: 2022-05-03
Accepted Date: 2022-10-08

Available Online: 2023-01-14

Publish Date: 2024-03-05

Abstract

Abstract

This paper considers downlink multiuser multiple-input-multiple-output system with parallel spatial modulation scheme, in which base station transmitter antennas are separated into K groups corresponding to K user terminals. Generalized spatial modulation is employed, in which a subset (more than single antenna) of transmit antenna array are activated and the activating pattern corresponds to specific spatial symbol. Different from existing precoding-based algorithms, we develop a two-stage detection scheme at each user terminal: In the pre-processing stage, a minimax algorithm is proposed to identify the indices of active antennas, where the key idea is that the minimum output energy of the detector is maximized; A constrained minimum output energy algorithm is proposed in the post-processing stage to mitigate multiuser interference and extract temporal symbols. Compared with existing precoding-based algorithms, the complexity is significantly reduced. Moreover, the proposed algorithm is semi-blind, in which only a small subset of channel state information is required to identify active antennas as well as eliminate multiuser interference. Simulation results demonstrate that the proposed algorithm is near-far resistant and the spectral efficiency is extensively increased compared to the conventional spatial modulation scheme.
- Generalized spatial modulation,
- Multiuser multiple-input-multiple-output,
- Multiuser interference,
- Minimum output energy,
- Minimax

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References(29)

References

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