MW OCDMA与FFH OCDMA的吞吐量性能比较  

Performance Analysis and Comparison of Normalized Throughput between Multi-wavelength Optical CDMA and Fast Frequency-hopping OCDMA Metworks

作　　者：吉建华[1] 徐铭[1] 张志朋[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,深圳518060

出　　处：《光通信技术》2005年第3期51-53,共3页Optical Communication Technology

基　　金：国家自然科学基金重点资助项目(60132040)

摘　　要：在考虑色散效应和多用户干扰对系统性能的影响后,分析和比较了MWOCDMA系统与FFHOCDMA系统的归一化吞吐量性能。为了比较的公平性,这两个系统的有效波长数和数据比特速率都相同。分析结果表明,当系统负载较小或较大时,FFHOCDMA系统的归一化吞吐量分别为较大或较小。The performance of multi-wavelength optical code-division multiple-access(MW OCDMA) system is analyzed and compared to that of a optical fast frequency-hopping code-division multiple-access (FFH OCDMA) system. The effect of dispersion and multi-access interference are taken into account. The normalized throughput, defined as the throughput per unit of time-domain bandwidth expansion and per wavelength, is used as metrics of performance. In order to compare their performances fairly, both FFH OCDMA and MW OCDMA have the same number of available wavelengths and the same data bit rate. Analysis result shows that FFH OCDMA has better performance when traffic load is light. However, MW OCDMA has better performance than FFH OCDMA when traffic load is heavy. Therefore, according to the system traffic load, the optimum performance of OCDMA system can be achieved by adjusting the space between FBGS.

关 键 词：多波长光码分多址 快跳频光码分多址 色度色散 误码率 

分 类 号：TN929.11[电子电信—通信与信息系统]