| DOCSIS2.0中上行信道多址接入方式的研究 |
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| 引用本文： | 方行玫,荀颖,赖元科.DOCSIS2.0中上行信道多址接入方式的研究[J].中国有线电视,2004(17):12-16. |
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| 作者姓名： | 方行玫 荀颖 赖元科 |
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| 作者单位： | 重庆大学,重庆,400044 |
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| 摘 要： | 有线电缆数据服务传输规范(DOCSIS)是为基于光纤同轴混合网(HFC)的宽带多媒体接入应用而开发的工业标准.新出台的DOCSIS2.0版本与目前广泛应用的1.x版本的一个主要差别是在上行信道接入方案中加入了同步码分多址(S-CDMA)技术.针对DOCSIS2.0与DOCSIS1.1的这一区别,着重阐述DOCSIS2.0中采用的两种多址接入技术,即高级时分多址(TDMA)技术与S-CDMA技术的性能比较,并建立模型,用MATLAB仿真它们在不同信道条件下的表现.
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| 关 键 词： | 有线电缆数据服务传输规范 有线电视 光纤同轴混合网 时分多址 同步码分多址 |
| 文章编号： | 1007-7022(2004)17-0012-05 |
| 修稿时间： | 2004年4月27日 |
A Study of Upstream Multiple Access Techniques of DOCSIS2.0 |
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| FANG Xing-mei,XUN Ying,LAI Yuan-ke.A Study of Upstream Multiple Access Techniques of DOCSIS2.0[J].China Cable Television,2004(17):12-16. |
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| Authors: | FANG Xing-mei XUN Ying LAI Yuan-ke |
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| Abstract: | Data Over Cable Service Interface Specification(DOCSIS)is an industry standard developed for broadband access applications of high speed multimedia via Hybrid Fiber Coax(HFC). The latest version, DOCSIS2.0 differs from the previous versions mainly in an added multiple access techniques, namely Synchronous Code Division Multiple Access(S-CDMA). In the paper, the difference bewteen these two versions of DOCSIS was analyzed, the performance of the systems respectively employed TDMA and S-CDMA was compared. And then, system models on AWGN channel are established with the help of MATLAB in the presence of different channel impairments, which include narrowband ingress noise, burst noise and microreflections. Conclusions and suggestions are given in the end of this thesis. |
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| Keywords: | DOCSIS CATV HFC TDMA S-CDMA |
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