On the Performance of Adaptive MIMO-OFDM Indoor Visible Light Communications
Publication in refereed journal

香港中文大學研究人員
替代計量分析
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其它資訊
摘要In this letter, we propose an adaptive indoor multiple input and multiple output (MIMO) orthogonal frequency division multiplexing (OFDM) visible light communication (VLC) system using a receiver module with angular diversity. In order to improve the capacity of indoor MIMO-OFDM VLC systems, tilted receivers are utilized to increase channel diversity, thus reducing channel correlation. With the help of singular value decomposition-based technique, which decomposes the MIMO VLC channels into independent parallel sub-channels, adaptive resource allocation, namely, bit and power loading, is used for these sub-channels to further improve the proposed system's capacity. Based on a 4 × 4 indoor MIMO-OFDM VLC system, we investigate bit error rate (BER) performance of the proposed adaptive system with different polar angles in two typical indoor scenarios. Numerical simulation results show that with 50-MHz modulation bandwidth, average BER can be improved from 4.97 × 10-3 to 1.66 × 10-5 and from 1.90 × 10-3 to 1.59 × 10-6 for the two scenarios, respectively.
著者Hong Y., Wu T., Chen L.-K.
期刊名稱IEEE Photonics Technology Letters
出版年份2016
月份4
日期15
卷號28
期次8
出版社Institute of Electrical and Electronics Engineers
出版地United States
頁次907 - 910
國際標準期刊號1041-1135
電子國際標準期刊號1941-0174
語言英式英語
關鍵詞bit and power loading, optical MIMO-OFDM, singular value decomposition, Visible light communications

上次更新時間 2020-01-12 於 00:03