室内可见光通信信道建模的研究

Research on Modeling Indoor Visible Light Communication Channels

文章针对室内可见光通信(Visible Light Communication,VLC)信道建模提出了一种接收平面微元建模方法,利用该方法分别对室内信道的接收光照度、接收光功率、信噪比、误码率等参数进行了分析。结果表明,在考虑墙壁一次反射的影响时,光照度平均增加133.88lx,但均方差会增加,说明墙壁一次反射的作用将会影响接收平面信号的波动。在相同信噪比分布下,分别对不同阶数的PAM调制方式进行了误码率分析,结果表明随着调制阶数的增加,高阶PAM系统的抗干扰能力下降,误码率增加。

This article proposes a receiving plane microelement modeling method for indoor Visible Light Communication(VLC)channel modeling.The method is used to analyze the parameters of indoor channel such as received illumination,received light power,signal-to-noise ratio,and error rate.The results show that when considering the impact of wall reflection,the average increase in illumination is 133.88lx,but the mean square error will increase,the effect of a reflection on the wall will affect the fluctuation of the received plane signal.Under the same signal-to-noise ratio distribution,error rate analysis was conducted on PAM modulation methods of different orders.The results showed that as the modulation order increased,the anti-interference ability of highorder PAM systems decreased and the error rate increased.