摘要
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 cost of slightly decreased transmission performance.
| 源语言 | 英语 |
|---|---|
| 页(从-至) | 36-40 |
| 页数 | 5 |
| 期刊 | Optics Communications |
| 卷 | 419 |
| DOI | |
| 出版状态 | 已出版 - 15 7月 2018 |
| 已对外发布 | 是 |
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