基于二维波长时域系统RS序列码的改进算法  

An Improved Arithmetic of RS Sequences Based on Wavelength-time Spread for 2-dimension System

作　　者：尹树华[1] 向玉[1] 胡利华[1] 刘源源[1] 

机构地区：[1]西安通信学院,陕西西安710065

出　　处：《半导体光电》2008年第2期243-246,共4页Semiconductor Optoelectronics

摘　　要：研究了一种用于光码分多址(OCDMA)系统二维波长时域(λ-t)系统RS序列码,并根据有限域基本理论,提出通过选取素数的不同本原根得到不同的生成多项式构造多组2D-RSC的方法,分析了该地址码的码字容量。分析结果表明,不同本原根可以获得不同组2D-RSC,并且各组码字容量,组内码字的相关特性均与改进前的二维λ-t系统RS序列码一样,自相关和互相关分别为0和1,从而保证了良好的误码特性。A construction method of multi-group Reed-Solomon code for 2-dimension （2D- RSC） was proposed in this paper. According to the finite field theorem, different primitive prime elements were selected to produce individual generation polynomials. Each group of 2D-RSC could be constructed based on a generation polynomial. This method could improve the number of the available group of 2D-RSC. The analysis results show that each constructed group has the same capacity and BER performance with the conventional method.

关 键 词：光码分多址 RS码 有限域 相关性 码字容量 

分 类 号：TN929.11[电子电信—通信与信息系统]