DOCSIS2.0协议的上行物理层技术  

Upstream Physical Layer Technologies of DOCSIS2.0 Protocol

作　　者：曾清海[1] 

机构地区：[1]中兴通讯股份有限公司上海第二研究所,上海200233

出　　处：《电视技术》2004年第1期42-43,49,共3页Video Engineering

摘　　要：阐述了对DOCSIS2.0的上行物理层技术规范及其新特点。它是在DOCSIS1.1的基础上增强协议物理层性能的新规范,增加了光纤同轴电缆混合(HFC)网系统的信道容量,提高了抗干扰能力;采用S-CDMA模式的上行物理层技术规范是DOC鄄SIS2.0的新特点,也是理解和应用该协议的关键。The technical specification of upstream physical la ye r of DOCSIS2.0and its new features are described.It is a new specification b ased on DOCSIS1.1for enhancing the protocol's physical layer performance.It increases channel capacity and improves interference immunity for HFC system.Th e upstream physical layer technologies specification using S-CDMA mode is a new feature of DOCSIS2.0,and is the key point for understanding and deploying t he protocol.

关 键 词：DOCSIS2.0协议 上行物理层 电缆数据服务接口规范 同步码分多址 网格编码调制 HFC 

分 类 号：TN943.6[电子电信—信号与信息处理]