Design of double-weight code for synchronous OCDMA systems with power control  

作　　者：陈富军 罗风光 冯刚 李斌 贺成 

机构地区：[1]School of Optical and Electronic Information, Huazhong University of Science and Technology [2]Department of Electronics and Information Engineering, Huazhong University of Science and Technology

出　　处：《Chinese Optics Letters》2014年第11期40-44,共5页中国光学快报（英文版）

基　　金：supported by the National"863"Program of China(No.2012AA011301);the National"973"Program of China(No.2010CB328302)

摘　　要：Double-weight optical code division multiple access（OCDMA） systems are proposed for studying differentiated quality-of-service transmission. Based on quadratic congruence code（QCC）, we construct a one-dimensional double-weight code family, which can be well utilized in incoherent synchronous double-weight OCDMA networks. By introducing algebraic transformation to code sequences of QCC in level 1, we obtain multiple double-weight codes with cross-correlation 1. Under the same-bit-power assumption, the performance of low-weight codes can be significantly improved and is always superior to that of high-weight codes in double-weight OCDMA systems with power control. This property is contrary to previous conclusions under the same-chip-power assumption.Double-weight optical code division multiple access（OCDMA） systems are proposed for studying differentiated quality-of-service transmission. Based on quadratic congruence code（QCC）, we construct a one-dimensional double-weight code family, which can be well utilized in incoherent synchronous double-weight OCDMA networks. By introducing algebraic transformation to code sequences of QCC in level 1, we obtain multiple double-weight codes with cross-correlation 1. Under the same-bit-power assumption, the performance of low-weight codes can be significantly improved and is always superior to that of high-weight codes in double-weight OCDMA systems with power control. This property is contrary to previous conclusions under the same-chip-power assumption.

关 键 词：Codes (symbols) Optical communication Power control Quality of service 

分 类 号：TN929.1[电子电信—通信与信息系统]