Generalized Space Domain Index Modulation for mmWave Distributed Antenna Systems

In this correspondence, we investigate the transmit signal design for millimeter-wave (mmWave) communication systems with distributed antennas. To be specific, by taking advantage of the directional communication property of mmWave communication, we first propose a generalized space domain index mod...

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Bibliographic Details
Published in:IEEE transactions on vehicular technology 2020-11, Vol.69 (11), p.14067-14071
Main Authors: Luo, Sheng, Yang, Ping, Che, Yue Ling, Wu, Kaishun, Peng, Yi, Li, Shaoqian
Format: Article
Language:English
Subjects:
Antenna arrays
Antennas
Array signal processing
Baseband
Communication
Communications systems
distributed antenna systems
Domains
Index modulation
Iterative methods
Millimeter wave communication
Millimeter waves
mmWave communication
Modulation
Optimization
precoding
Radio frequency
spatial modulation
System reliability
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Summary:In this correspondence, we investigate the transmit signal design for millimeter-wave (mmWave) communication systems with distributed antennas. To be specific, by taking advantage of the directional communication property of mmWave communication, we first propose a generalized space domain index modulation (GSDIM) scheme to improve the system reliability. In the proposed GSDIM scheme, the user equipment (UE) uses different beam direction combinations to carry additional information bits, i.e., using multi-domain modulations to optimize transmission. Then, we derive the symbol error rate (SER) of the proposed GSDIM, and design digital precoding matrices to minimize the SER. It is shown that the SER minimization problem is a non-convex problem, and we propose an iterative method to solve it. Numerical results show that the proposed GSDIM scheme can achieve a lower system SER as compared with the existing counterpart.
ISSN:0018-9545
1939-9359
DOI:10.1109/TVT.2020.3030628