Optics Communications 2018 DOI: 10.1016/j.optcom.2018.03.015 View full text
Bangjiang Lin, Xuan Tang, Zhenlei Zhou, Chun Lin, Zabih Ghassemlooy

Abstract: We propose an experimental demonstration of sparse code multiple access (SCMA) based visible light communications (VLC) system, in which the multi-dimensional codewords selected from a predefined codebook set are used to encode the transmitted data and a message passing algorithm (MPA) based multi-user receiver is used to detect the multiplexed codewords. Compared with the orthogonal frequency-division multiple access scheme, the SCMA scheme offers 150% overloading gain in the number of supported users at the …

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