Chinese Optics Letters, 2017, 15 (5): 050604, Published Online: Jul. 23, 2018  

Experimental demonstration of indoor interfered visible light communication system employing successive interference cancellation Download: 931次

Author Affiliations
1 Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China
2 State Key Laboratory of Optical Communication Technologies and Networks, Wuhan Research Institute of Posts Telecommunications, Wuhan 430074, China
Abstract
Multipath interference induced power fading occurs when the transmission path lengths from the light emitting diodes to a single receiver are different in a visible light communication system. To solve this problem, we apply a QR-decomposition-based channel equalizer (QR-CE) to achieve successive interference cancellation for a discrete Fourier transform spreading (DFT-S) orthogonal frequency division multiplexing (OFDM) signal. We experimentally demonstrate a 200 Mb/s DFT-S OFDM over a 2 m free-space transmission. The experimental results show that a DFT-S OFDM with QR-CE attains much better bit error rate performance than a DFT-S OFDM with conventional CEs. The impacts of several parameters on a QR-CE are also investigated.

Miaofeng Li, Xiang Li, Chao Yang, Qi Yang, Shaohua Yu. Experimental demonstration of indoor interfered visible light communication system employing successive interference cancellation[J]. Chinese Optics Letters, 2017, 15(5): 050604.

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