3G高速数据接入技术研究  

The study of high speed data access technique in 3G

作　　者：金卓琳[1] 傅海阳[1] 

机构地区：[1]南京邮电大学通信与信息工程学院,江苏南京210003

出　　处：《西安邮电学院学报》2007年第3期30-34,共5页Journal of Xi'an Institute of Posts and Telecommunications

摘　　要：本文将证明利用现有的CDMA基本原理很难实现1x EV-DV和HSDPA应该达到的3G高速数据接入的目标,并提出一种利用码分多址/时分多址来改进1x EV-DV和HSDPA系统的方案,它将利用码分多址区分语音和高速数据业务信道,在语音和高速数据业务信道中分别选用码分和时分多址方式。这种方法可改进cdma2000 1x和WCDMA标准上下行容量基本对称的技术问题,使其符合移动因特网的需求。This paper not only gives the proof that both 1x EV- DV and HSDPA technique can hardly achieve the aim of high speed date access technique in 3G, but also introduces meliorated 1x EV- DV and HSDPA schemes by combining CDMA mode with TDMA, in which CDMA is used to distinguish voice and high data rate traffic channels, furthermore, CDMA and TDMA mode are employed in voice and high data rate traffic channels respectively. This method could improve the technical defect of symmetric up/down link capacity in CDMA 2000 1x and WCDMA standards to meet the requirement of wireless Internet service.

关 键 词：码分多址 时分多址川 区容量 干扰抵消 

分 类 号：TN929.5[电子电信—通信与信息系统] TN915.04[电子电信—信息与通信工程]