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Title: Flexible-rate SIC-free NOMA for downlink VLC based on constellation partitioning coding
Authors: Chen, Chen
Zhong, Wen-De
Yang, Helin
Du, Pengfei
Yang, Yanbing
Keywords: Constellation Partitioning Coding
Visible Light Communication
Engineering::Electrical and electronic engineering
Issue Date: 2019
Source: Chen, C., Zhong, W.-D., Yang, H., Du, P., & Yang, Y. (2019). Flexible-rate SIC-free NOMA for downlink VLC based on constellation partitioning coding. IEEE Wireless Communications Letters, 8(2), 568-571. doi:10.1109/LWC.2018.2879924
Series/Report no.: IEEE Wireless Communications Letters
Abstract: Visible light communication (VLC) systems utilizing conventional superposition coding/successive interference cancellation (SPC/SIC)-based non-orthogonal multiple access (NOMA) suffer from the error propagation effect due to imperfect SIC. In this letter, we propose a flexible-rate SIC-free NOMA technique for downlink VLC systems, based on constellation partitioning coding (CPC) and uneven constellation demapping (UCD). By using CPC/UCD, SIC is not required and hence error propagation can be eliminated in NOMA-based VLC systems. Moreover, by selecting a proper bit allocation scheme, flexible-rate multiple access can be supported in the VLC system applying CPC/UCD based NOMA. Proof-of-concept two-user VLC experiments verify that, compared with conventional SPC/SIC-based NOMA, the bit error rate performance of the near user can be greatly improved by using CPC/UCD-based NOMA, and hence the effective power allocation ratio range can be substantially extended.
ISSN: 2162-2337
DOI: 10.1109/LWC.2018.2879924
Rights: © 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The published version is available at:
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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