Fractionally spaced equalization in visible light communication
Fractionally spaced equalization in visible light communication
复制标题
可见光通信中的分数间隔均衡
DOI：
10.1109/wcnc.2013.6555266
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Zaichen Zhang
中科院分区：
文献类型：
--
作者：
Mingxuan Zhang;Zaichen Zhang
利用白光发光二极管 (LED) 的可见光通信 (VLC) 被认为是未来照明技术的有力候选者。 LED 分布在天花板上，具有宽广的辐照度分布，可实现充足的一般照明。但带宽有限的 LED 通道和室内多径传播延迟会导致严重的符号间干扰 (ISI)。当增加数据速率时，室内可见光无线系统的误码率（BER）性能显着下降。在本文中，我们讨论使用分数间隔均衡 (FSE) 的均衡系统并评估其在 VLC 系统中的性能。因此，FSE 的性能优于采用符号间隔采样的均衡器。此外，该均衡方法适用于带宽受限的光多径信道。
Visible light communication (VLC) utilizing white light emitting diode (LED) is considered as a strong candidate for the future lighting technology. The LEDs are distributed across the ceiling and have wide irradiance distribution for achieving adequate general lighting. But the bandwidth-limited LED channel and indoor multipath propagation delays cause severe inter-symbol interference (ISI). Bit error rate (BER) performance of the indoor visible light wireless system is degraded significantly when increasing the data rate. In this paper, we discuss about the equalization system using fractionally-spaced equalization (FSE) and evaluate its performance in a VLC system. As a result, the performance of FSE is superior to the equalizer with symbol interval sampling. Further more, this equalization method is suitable for a bandwidth-limited optical multipath channel.