【作者】 梁毅； 廖进昆； 王忠；

【Author】 Liang Yi Liao Jinkun Wang Zhong (Communication Engineering Department,SiChuan University,chengdu 610065)

【机构】 四川大学通信工程系；

【摘要】 首先讲述了光正交码的基本概念及原理。光正交码(OOC’S)是一组由0和1组成并且有着良好的自相关和互相关特性的序列。接着,对光正交码的性能进行了研究,考虑了用户间的多址干扰,并给出了相应的曲线。对于一个特定的光码分多址(OCDMA)系统,可以将误码率作为码长、码重、用户数以及接收机阈值的函数推导出来,并且对于不同的参数变化,系统呈现不同的性能。更多还原

【Abstract】 The basic conception and principle of Optical Orthogonal Codes(OOC’s)are introduced in this paper.An optical orthogonal code is a family of (0,1) sequences,having good autocorrelation and crosscorrelation.Next,the bit error performance of the multiple-users OCDMA system is theoretically studied in this paper.The users’ multiple-access interference are considered,and the corresponding curves are given.The bit error rate of the proposed OCDMA system as a function of code length,code weight,number of users,and receiver threshold is dereived;and the performance characteristics for a vari- ety of system parameters is discussed.更多还原