多波长OCDMA与WDMA系统的性能分析和比较  

Performance analysis and comparison of MW OCDMA and WDMA

作　　者：吉建华[1] 徐铭[1] 周建华[1] 杨淑雯[1] 

机构地区：[1]深圳大学信息工程学院新技术研究中心,广东深圳518060

出　　处：《光通信研究》2004年第5期36-37,61,共3页Study on Optical Communications

基　　金：国家自然科学基金重点资助项目(60132040)

摘　　要：分析了色散效应对多波长光码分多址(MWOCDMA)系统的归一化吞吐量性能的影响.光脉冲信号的切普宽度越小,色散效应就越大,MWOCDMA系统的归一化吞吐量性能也就下降得越严重.在考虑色散效应和多用户干扰的情况下,比较了MWOCDMA系统与波分多址(WDMA)系统的归一化吞吐量性能.结果表明:当负载较小时,MWOCDMA系统的性能不如WDMA系统;当负载较大时,MWOCDMA系统的性能优于WDMA系统.The effect of dispersion on normalized throughput of multi-wavelength optical code-division multiple-access(MW OCDMA) system is analyzed. The smaller the chip width of optical pulse is, the more serious the dispersion effect is and the more greatly does the maximum normalized throughput of MW OCDMA decrease. The performance of MW OCDMA is compared to that of a wavelength-division multiple-access (WDMA) system after considering the effect of dispersion and multi-access interference. Analysis result shows that when load is small,WDMA has better performance. However, MW OCDMA has better performance than WDMA when load is large.

关 键 词：多波长光码分多址 波分多址 素数跳频码 误码率 吞吐量 

分 类 号：TN914.5[电子电信—通信与信息系统]