红外无线信道特性的评价方法  

THE EVALUATION METHOD FOR INFRARED WIRELESS COMMUNICATION CHANNEL

作　　者：徐海峰[1] 李骄阳[1] 惠晓实[1] 刘贤德[1] 

机构地区：[1]华中理工大学光电子系

出　　处：《红外与毫米波学报》1999年第2期171-176,共6页Journal of Infrared and Millimeter Waves

摘　　要：基于评价室内红外无线通信信道的目的，采用改进的朗伯定律描述室内表面的漫射特性，分析了信道中直射及漫射分量的大小，定义了评价红外无线信道的瞬态响应及时延的表达方法，并针对几个实用信道进行了模拟．结果表明，光接收机的ＦＯＶ及位置的变化对信道特性的影响较大．通过信道特性的分析比较。For the purpose of evaluation of the characteristics of the infrared wireless communication channel, the mathematical equations of the impulse response and time delay of infrared channel were defined. The diffuse characteristics of the surfaces of the room were described by Lambertian law.The magnitudes of light of sight and diffuse response of channel, the characteristics of several channels were analyzed and simulated. The results demonstrated that the change of FOV and the change of the position of receiver have serious effects to the characteristics of the channel. The methods of this paper are contributed to the design of a robust infrared communication channel.

关 键 词：红外无线通信 评价方法 光无线信道 通信信道 

分 类 号：TN929.1[电子电信—通信与信息系统]