Experimental demonstration of indoor interfered visible light communication system employing successive interference cancellation

• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2017,（5）
• 页码范围: 30-34
• 页数: 5页
• 语种: 英文
• DOI: 10.3788/COL201715.050604

摘要

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.