【摘要】 利用仿真法研究光纤色度色散对快跳频光码分多址系统的影响 ,主要研究了光纤色散导致的码字自相关输出峰值、取样切普内光能量的减小、不同条件下所能达到的最大用户数据速率和最大传输距离 .给出了几个具有不同 q值的典型快跳频光码分多址系统的最大用户数据速率和传输距离 .提出了减小 q值以降低色散影响的码字优化法 .讨论了该系统的应用场合问题 .更多还原

【Abstract】 Effects of fiber’s chromatic dispersion on fast frequency hopping OCDMA systems were investigated by simulation.Emphases were placed on the decrement of peak power and sample energy of receiver’s reconstructed pulses and of transmission distance.Based on these simulation results,limit of dispersion on user date rate and transmission distance in the FFH-OCDMA system was shown.Also,one method of coping with dispersion,i.e.code optimization,were proposed and analyzed.更多还原