Fractionally spaced equalizer for indoor visible light communication system
Fractionally spaced equalizer for indoor visible light communication system
复制标题
室内可见光通信系统的分数间隔均衡器
DOI：
10.3788/ope.20122001.0024
复制
发表时间：
2012
期刊：
影响因子：
--
通讯作者：
冯敏 Feng Min
中科院分区：
文献类型：
--
作者：
王军波 Wang Jun;谢秀秀 Xie Xiu;曹玲玲 Cao Ling;盛明 Sheng Ming;冯敏 Feng Min
针对室内可见光通信（VLC）系统中码间干扰（ISI）的影响，研究了分数间隔均衡（FSE）技术.根据室内VLC系统的传输特性和信号调制特性，建立了室内VLC通信的链路模型，并利用该链路模型提出了FSE方法.在最小均方误差（MSE）准则的基础上，提出了一种基于FSE的室内可见光通信系统的信道估计方法，并对该方法进行了仿真研究.仿真结果表明，FSE方法能够有效地消除室内VLC系统中的码间干扰，提高系统的性能.实验结果表明，在相同的误码率下，T/2分数间隔均衡器的性能比符号间隔均衡器提高了1-2 dB，能有效地消除多径引起的码间干扰，提高信号传输的可靠性。
The Fractionally Spaced Equalization(FSE) technology is investigated to mitigate the effects of Inter-symbol Interference(ISI) on the indoor Visible Light Communication(VLC) systems.Based on the propagation properties and signal modulation characteristics of indoor VLC systems,a link model for the indoor VLC communications is described,then the FSE method is proposed by using the link model.Furthermore,based on the minimum Mean Square Error(MSE) criterion,the FSE is optimized.Finally,the performance of the proposed FSE theory is evaluated by computer simulation.Experimental results indicate that the performance of T/2-fractionally spaced equalizer has improved 1-2 dB than that of the symbol interval equalizer in the same Bit Error Ratio(BER).It can eliminate the effects of the ISI induced by the multipath effectively,and can improve the reliability of signal transmission.