摘要
通常ＣＤＭＡ系统接近波分复用的性能，但是也面临一些有待解决的问题，例如多用户时的谱干扰、散弹噪声等。文中提出了一种实现光ＣＤＭＡ的新方案，它应用平衡发射和接收技术，同时使用Ｍａｃｈ－Ｚｅｈｎｄｅｒ干涉链来进行地址编码。按新方案实施可以在非相干调制光系统中得到地址码的真正正交。
The Performance of CDMA approaches that of WDM, but it also faces some problems such as spectrum interference from multiple users and shot noise etc.This Paper presents a new scheme to realize the optical CDMA. This scheme uses balanced transmission/receiving technology and Mach Zehnder interferometer to encode address, and it can improve the performance of CDMA by getting the true orthogonality of address code from the optical non coherent modulation system.
出处
《光通信技术》
CSCD
北大核心
1999年第4期261-265,共5页
Optical Communication Technology
基金
国家自然科学基金
关键词
码分多址
光纤通信
CDMA
CDMA Mach Zehnder Interferometer Orthogonlity balanced transmission/receive
