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基于光正交码,研究了WDM+OCDMA系统的性能。采用4个波长信道和3个码字的光正交码OOC(37,4,1),对12个用户的WDMA+OCDMA进行了系统仿真,用户数据速率为1Gbit/s,单模光纤长为50km,色散补偿光纤长为5km。如需增加WDMA+OCDMA的用户数,可以通过增加波长信道数或码字容量来实现。分析了色散效应对WDMA+OCDMA系统性能的影响,研究了用户之间相对延时对多址干扰和系统性能的影响。
Based on optical orthogonal codes, the performance of WDM + OCDMA system is studied. The optical orthogonal code OOC (37,4,1) with 4 wavelength channels and 3 codewords was used to simulate the WDMA + OCDMA of 12 users. The user data rate was 1Gbit / s, the length of single mode fiber was 50km, dispersion compensation fiber length of 5km. To increase the number of WDMA + OCDMA users, you can increase the number of wavelength channels or code words to achieve. The effect of dispersion on the performance of WDMA + OCDMA system is analyzed. The influence of relative delay between users on multiple access interference and system performance is analyzed.