摘要
本文将用于光纤同步CDMA(FO CDMA)的一维修正素数码推广到了二维 .在APD光检测器输出近似为高斯过程并考虑APD噪声 ,热噪声和多址干扰影响下 ,分析了系统的误码率性能 ,结果表明 ,二维FO CDMA系统的性能优于一维FO CDMA ,且有占系统带宽小的特点 .
Two-dimensional prime sequence codes for synchronous fiber-optic CDMA (Code di vision multiple acess) network is derived from modified prime sequence codes.The bit error probability performa nce of the proposed system using an avalanche photodiode (APD) is analyzed where the Gaussian approximation of the APD output is employed and the effect of the APD noise,thermal noise,and multiple access interference are considered.Numerica l results reveals that the performance of 2-D FO(Fiber optic)-CDMA system is muc h better than that of 1-D FO-CDMA system and the bandwidth occupied by 2-D FO-CDMA system is relatively small.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2000年第7期111-113,共3页
Acta Electronica Sinica
基金
国家 8 63 31 7项目资助!(合同编号 :960 0 0 7)
关键词
光纤码分多址
素数码序列
光纤通信
fiber-optic CDMA
prime sequence codes
two-dimensional optical orthogonal code
