基于LED的室内无线通信OCDMA实现  

Implementation of Indoor Wireless OCDMA Using LED Lights

作　　者：朱江[1] 朱娜[1] 仲启端[1] 韩飞[1] 

机构地区：[1]江苏大学计算机科学与通信工程学院,江苏镇江212013

出　　处：《半导体光电》2009年第1期108-111,共4页Semiconductor Optoelectronics

基　　金：国家自然科学基金资助项目(60702056)

摘　　要：基于同时发出三色光的多芯片LED,构建室内光无线通信系统,使用不同颜色的光作为上行和下行链路的传输载体,实现双向通信。在考虑背景光噪声、接收机噪声的条件下,给出了单用户和多用户时,对采用光正交码序列作为地址码的OCDMA上行链路的误码率并进行了仿真。仿真结果表明,单用户的误码率取决于光正交码序列的长度和权重;多用户情况下的误码率主要来自多个用户之间的相互干扰,用户数量、光正交码序列的长度、权重以及判决门限都会对误码率产生影响。A full LED by using different duplex communication system is designed based on the multi-chip type color of light. In the analysis, background noise and thermal noise are taken into account. The performance of single user and multi-users with Optical Orthogonal Codes （OOC） is derived and evaluated according to numerical results in Optical Code Division Multiple Access （OCDMA） uplinks. Simulation results indicate that, the BER（bit error rate） depends on the length and the weight of the OOC in the case of single user; and is primarily caused by multi-users access in the case of multi-users. The amount of users, the length and weight of OCC and the threshold of the receiver also have impact on BER.

关 键 词：无线光通信 OCDMA 光正交码 LED 

分 类 号：TN929.1[电子电信—通信与信息系统]