HFC接入网中多址接入技术与信道噪声特性的关系  

Relationship Between Multiple-address Technique and Noise Characteristics in Channel in HFC Access Network

作　　者：田艳中[1] 党明瑞[1] 

机构地区：[1]重庆邮电学院,重庆400065

出　　处：《中国有线电视》2004年第3期35-39,共5页China Digital Cable TV

摘　　要：目前 ,基于CableModem技术的HFC接入网已得到较为广泛的应用 ,但网络中的漏斗噪声限制了系统带宽的充分利用。着重分析上行信道的噪声特性 ,并根据噪声特性 ,研究了TDMA ,FDMA和CD MA 3种多址接入技术的特点 。HFC access network based on Cable Modem technique has been put into application widely now.But the funnel noise in network confine the full use of system bandwidth.This article especially analyzes the noise characteristics in upstream channel.Meanwhile researches the characteristics of three multiple-address access techniques such as TDMA,FDMA and CDMA in terms of the noise characteristics.Thinks that TDMA/FDMA composite project is more fit for the transmission requirement of upstream channel in HFC network.

关 键 词：HFC接入网 多址接入 信道噪声 TDMA FDMA CDMA 

分 类 号：TN915.62[电子电信—通信与信息系统]