| 多光载波接入副载波复用系统中的光拍频干扰噪声分析 |
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| 引用本文： | 解文才,黄肇明,王春华,雷建设,贾潞华.多光载波接入副载波复用系统中的光拍频干扰噪声分析[J].上海大学学报(自然科学版),2001,7(2):105-108. |
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| 作者姓名： | 解文才 黄肇明 王春华 雷建设 贾潞华 |
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| 作者单位： | 上海大学通信与信息工程学院, |
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| 摘 要： | 讨论了副载波复用系统中多光载波接入情况下的光拍频干扰(OBI)噪声问题,对光拍频干扰的产生机理、功率谱分布和载波干扰比进行了分析.光拍频干扰噪声大大地降低了单信道的载噪比,严重地劣化了系统的性能,因而必须加以抑制.增加激光光源谱宽和减少信号带宽可以有效地提高载噪比.
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| 关 键 词： | 副载波复用 光拍频干扰 载噪比 |
| 文章编号： | 1007-2861(2001)02-0105-04 |
| 修稿时间： | 2000年12月13 |
Analysis of Optical Beat Interference Noise in Subcarrier Multiplexing System with Multiple Optical Carriers |
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| XIE Wen-cai,HUANG Zhao-ming,WANG Chun-hua,LEI Jian-she,JIA Lu-hua.Analysis of Optical Beat Interference Noise in Subcarrier Multiplexing System with Multiple Optical Carriers[J].Journal of Shanghai University(Natural Science),2001,7(2):105-108. |
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| Authors: | XIE Wen-cai HUANG Zhao-ming WANG Chun-hua LEI Jian-she JIA Lu-hua |
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| Abstract: | Optical beat interference (OBI) noise in a subcarrier multiplexing system with multiple optical carriers is discussed. The mechanism of OBI, its spectrum distribution and carrier-to- interference ratio are analyzed. OBI noise drastically reduces CNR of each channel and seriously degrades the system performance, therefore must be suppressed. Increasing spectrum linewidths of laser sources and reducing bandwidths of signals can enhance CNR effectively. |
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| Keywords: | subcarrier multiplexing OBI CNR |
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