On the Performance of Spatial Modulation-Based Optical Wireless Communications

This letter focuses on a spatial modulation (SM)-based multiple input single output optical wireless communication system. In the system, both input-dependent noise and finite alphabet are employed. Based on information theory, the theoretical expressions of the mutual information and its lower boun...

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Bibliographic Details
Published inIEEE photonics technology letters Vol. 28; no. 19; pp. 2094 - 2097
Main Authors Wang, Jin-Yuan, Yang, Zhaohui, Wang, Yongjin, Chen, Ming
Format Journal Article
LanguageEnglish
Published New York IEEE 01.10.2016
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Channels
Design engineering
Design optimization
finite alphabet
input-dependent noise
Manganese
Mathematical analysis
Mathematical models
Modulation
Mutual information
Optical receivers
Optical transmitters
Optical wireless communications
Optimization
Precoding
Signal to noise ratio
spatial modulation
Wireless communication
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Summary:This letter focuses on a spatial modulation (SM)-based multiple input single output optical wireless communication system. In the system, both input-dependent noise and finite alphabet are employed. Based on information theory, the theoretical expressions of the mutual information and its lower bound are derived. By maximizing the minimum distance, an optimization problem for precoding design is formulated. Then, an interior point method-based iteration algorithm is proposed to solve the problem. Numerical results show that the performance of the proposed SM scheme outperforms that of the conventional, choosing the best-gain channel scheme. Moreover, the proposed precoding scheme can provide better system performance than the scheme without precoding.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 23
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2016.2585502