Wang Yuanquan, Huang Xingxing, Zhang Junwen, Wang Yiguang, Chi Nan
Opt Express. 2014 Jun 30;22(13):15328-34. doi: 10.1364/OE.22.015328.
In this paper, a novel hybrid time-frequency adaptive equalization algorithm based on a combination of frequency domain equalization (FDE) and decision-directed least mean square (DD-LMS) is proposed and experimentally demonstrated in a Nyquist single carrier visible light communication (VLC) system. Adopting this scheme, as well with 512-ary quadrature amplitude modulation (512-QAM) and wavelength multiplexing division (WDM), an aggregate data rate of 4.22-Gb/s is successfully achieved employing a single commercially available red-green-blue (RGB) light emitting diode (LED) with low bandwidth. The measured Q-factors for 3 wavelength channels are all above the Q-limit. To the best of our knowledge, this is the highest data rate ever achieved by employing a commercially available RGB-LED.
本文提出了一种基于频域均衡（FDE）和判决引导最小均方（DD-LMS）相结合的新型混合时频自适应均衡算法，并在奈奎斯特单载波可见光通信（VLC）系统中进行了实验验证。采用该方案，结合512正交幅度调制（512-QAM）和波分复用（WDM），使用单个低带宽的商用红绿蓝（RGB）发光二极管（LED）成功实现了4.22 Gb/s 的总数据速率。3个波长通道的测量Q因子均高于Q限值。据我们所知，这是使用商用RGB-LED实现的最高数据速率。
