| 光源消光比对跳频OCDMA系统性能的影响 |
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| 引用本文： | 沈成彬,范戈.光源消光比对跳频OCDMA系统性能的影响[J].通信学报,2002,23(10):94-100. |
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| 作者姓名： | 沈成彬 范戈 |
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| 作者单位： | 上海交通大学,区域光纤通信网和新型光通信系统国家重点实验室,上海,200030 |
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| 摘 要： | 本文对光跳频码分多址系统性能与光源消光比的关系进行了深入研究和定量分析，提出了随消光比变化调整解码器判决阈值的理想判决概念。讨论了系统性能对消光比劣化的敏感程度问题，并给出了评价方法，并据此对跳频系统和直接序列系统进行了比较。在此基础上，提出了光跳频码分多址系统的改进方案。
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| 关 键 词： | 光源消光比 OCDMA 光快跳频码分多址 消光比 消光比监控 理想判决 光纤通信 |
| 文章编号： | 1000-436X(2002)10-0094-07 |
Effect of source extinction ratio on performance of optical fast frequency-hop CDMA systems |
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| SHEN Cheng-bin,FAN Ge.Effect of source extinction ratio on performance of optical fast frequency-hop CDMA systems[J].Journal on Communications,2002,23(10):94-100. |
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| Authors: | SHEN Cheng-bin FAN Ge |
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| Abstract: | In the paper, the relationship between source extinction ratio and BER performance of FFH-CDMA systems was investigated. A new concept of ideal decision, i.e. adjusting decision threshold of optical decoder according to extinction ratios, was presented. Sensitivity of system performance to extinction ratio degradation and its evaluation were studied. Based on these analyses, the sensitivity of FFH-OCDMA system was compared to that of DS-OCDMA system. Finally, a modified scheme of FFH-OCDMA system was proposed. |
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| Keywords: | optical fast frequency-hop CDMA extinction ratio extinction ratio monitoring ideal decision |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
