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
060.2605 Free-space optical communication 200.2605 Free-space optical communication 230.3670 Light-emitting diodes
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.