| 光码分多址多用户干扰抑制方法研究 |
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| 引用本文： | 李晓滨. 光码分多址多用户干扰抑制方法研究[J]. 半导体光电, 2007, 28(1): 116-119,130 |
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| 作者姓名： | 李晓滨 |
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| 作者单位： | 深圳大学,信息工程学院,广东,深圳,518060 |
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| 基金项目： | 深圳大学校科研和教改项目 |
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| 摘 要： | 综述了光码分多址(CDMA)多用户干扰的问题及其抑制方法,指出目前光CDMA系统中多用户干扰主要影响发送比特为"0"时的误码率.提出了一种基于最大值判决的并行干扰抑制方法,进行误码性能仿真.仿真结果表明采用上述多用户干扰抑制方法的新型系统比常规系统的误码性能改善10个数量级以上.
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| 关 键 词： | 光纤通信 码分多址 多用户干扰 光正交码 |
| 文章编号： | 1001-5868（2007）01-0116-04 |
| 修稿时间： | 2006-06-06 |
Discussion on Suppressing Multi-user Interference Method in Optical Code Division Multiple Access System |
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| LI Xiao-bin. Discussion on Suppressing Multi-user Interference Method in Optical Code Division Multiple Access System[J]. Semiconductor Optoelectronics, 2007, 28(1): 116-119,130 |
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| Authors: | LI Xiao-bin |
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| Affiliation: | College of Information Engineering,Shenzhen University,Shenzhen 518060 ,CHN |
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| Abstract: | The problem of multi-user interference existing in optical code division multiple access(CDMA) system and its suppression method are discussed.It is stated that multi-user interference mainly impact on the occasion of bit "0" being transmitted,and a new method of suppressing it based on maximum value decision and parallel interference canceller is presented.Optical orthogonal codes are applied as address codes.Simulations of bit error probability based on the method are done.The results show that bit error performance of the system adopting the new method can be ten orders of magnitude better than that of conventional system. |
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| Keywords: | optical fiber communication code division multiple address(CDMA) multi-user interference optical orthogonal codes |
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