Performance-enhanced gigabit/s MIMO-OFDM visible light communications using CSI-free/dependent precoding techniques
Publication in refereed journal

香港中文大學研究人員
替代計量分析
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摘要In this paper, we propose two digital signal processing (DSP) techniques, the orthogonal circulant matrix transform (OCT) technique and the singular value decomposition (SVD)-based adaptive loading, to reduce the bit error rate (BER) of multiple-input-multiple-output orthogonal frequency division multiplexing (MIMO-OFDM)-based visible light communication (VLC) systems, without and with using the channel state information (CSI), respectively. A gigabit/s 2 × 2 MIMO-OFDM VLC system under ~100-MHz system bandwidth, with both symmetrical and asymmetrical MIMO setups, is demonstrated. It is shown that both techniques can attain outstanding BER reduction regardless of the transceivers’ geometrical distributions. The SVD-based adaptive loading exhibits the best performance but requires the CSI. The OCT technique can achieve suboptimal performance without the needs of CSI. In both the 1.6-Gbit/s symmetrical MIMO setup and the 1.2-Gbit/s asymmetrical setup, we achieved more than one and two orders of magnitude reductions in the BER by using the OCT technique and the SVD-based adaptive loading, respectively.
出版社接受日期07.04.2019
著者Yang Hong, Lian-Kuan Chen, Jian Zhao
期刊名稱OPTICS EXPRESS
出版年份2019
月份4
日期29
卷號27
期次9
出版社Optical Society of America
頁次12806 - 12816
國際標準期刊號1094-4087
語言美式英語

上次更新時間 2020-15-01 於 03:26