Low-Complexity Generalized Spatial Modulation Schemes Using Codebook-Assisted MIMO Detectors

Generalized spatial modulation (GSM) is an attractive transmission technique for multiple-input multiple-output systems because of its spectral efficiency and energy efficiency. The maximum likelihood detector provides the optimal performance for GSM signal detection, but also leads to a high level...

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Bibliographic Details
Published in:IEEE transactions on vehicular technology 2018-12, Vol.67 (12), p.12358-12362
Main Authors: Chen, Yen-Ming, Cheng, Wen-Chun, Li, Chih-Peng, Haas, Zygmunt J.
Format: Article
Language:English
Subjects:
Codes
Complexity
Complexity theory
Cost function
Detectors
Error correcting codes
Generalized spatial modulation
GSM
massive MIMO
MIMO (control systems)
Modulation
Search algorithms
Sensors
Signal detection
Transmitting antennas
tree-search algorithm
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Summary:Generalized spatial modulation (GSM) is an attractive transmission technique for multiple-input multiple-output systems because of its spectral efficiency and energy efficiency. The maximum likelihood detector provides the optimal performance for GSM signal detection, but also leads to a high level of detection complexity. In this paper, both hard-decision and soft-decision detectors, which are based on a low-complexity codebook-assisted tree-search algorithm, are investigated. In addition, outer low-density parity-check codes are designed such that the concatenated schemes are able to provide error performances, which are very close to those of the schemes using conventional detectors, but with a much lower level of computational complexity.
ISSN:0018-9545
1939-9359
DOI:10.1109/TVT.2018.2871577