摘要： 远程教育系统发展至今已经进入第3代,即将计算机网络和多媒体技术相结合应 用到远程教育中?文章中描述了研究并设计实现了一种新的远程教育系统,提出了将上下行 信道分离的概念,即下行采用卫星信道,而上行采用地面网络的传输方式?该系统最大的特 点就是实时性和交互性?
关键词:
远程教育,
非对称信道,
卫星传输,
主站,
接收站,
组播
Abstract: Till now, distance education system has entered its third generation , which applies both computer network and multimedia technology. In this paper, a new distance education system is designed and realized by putting forward the conception of separating uplink and downlink channels. It applies satellite as u plink channel and terrain network as the downlink channel. And it successfully r ealizes the real-time and interaction transmission.
中图分类号:
陈信年,朱贻盛,龚丽,谢浩. 第三代远程教育系统的研究和设计[J]. , 2003, 29(11): 54-56.
CHEN Xinnian1, ZHU Yisheng1, GONG Li2, XIE Hao3. R&D of the Third Generation Distance Education System[J]. , 2003, 29(11): 54-56.