Discrete-Circulant-Transform Spread OFDM for Bandwidth-Limited VLC Systems
Publication in refereed journal

替代計量分析
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其它資訊
摘要We propose and investigate discrete-circulant transform spread orthogonal frequency division multiplexing (DCrT-S-OFDM) for bandwidth-limited optical systems. We derive the conditions for optimal designs of DCrT-S-OFDM in the noise limited scenarios and verify its bit error rate advantage over conventional OFDM. We also analytically investigate the performance of DCrT-S-OFDM under the effect of inter-symbol interference (ISI) and inter-carrier interference (ICI), and prove its performance advantage over discrete-Fourier-transform spread OFDM (DFT-S-OFDM). Based on the developed theory, we propose several novel designs of DCrT-S-OFDM to achieve optimal or near-optimal performance. Extensive simulations have been performed in a visible light communication (VLC) system to validate the findings. The results agree with the theory and verify the performance advantage of DCrT-S-OFDM over other schemes. Finally, a ∼650-Mbit/s VLC system with ∼70-MHz 3-dB system bandwidth was experimentally demonstrated. The results also confirm that DCrT-S-OFDM outperforms conventional OFDM and DFT-S-OFDM, making the proposed DCrT-S-OFDM a promising solution for optical systems using low-bandwidth devices to achieve high data rates.
出版社接受日期27.07.2019
著者Jian Zhao, Yang Hong, Lian-Kuan Chen
期刊名稱Journal of Lightwave Technology
出版年份2019
月份10
日期15
卷號37
期次20
出版社IEEE
頁次5340 - 5353
國際標準期刊號0733-8724
電子國際標準期刊號1558-2213
語言美式英語
關鍵詞Discrete circulant transform, OFDM, optical communications, visible light communications.

上次更新時間 2020-25-11 於 23:56