基于网络的视频通信系统的设计

随着移动通信和多媒体通信的飞速发展，构建于无线网络之上的多媒体服务已经被越来越多的用户所接受。2．5代移动通信CDMA的典型带宽为30～50kb／s，可以传输低速的视频，但是对多媒体应用来说，其质量还是未能达到要求。在现有技术条件下，如何在CDMA无线信道中保证视频流的质量以及如何扩大带宽提高视频质量，是值得研究的问题。文中提出了一种在多个CDMA通道中进行视频传输的框架，利用多个CDMA无线信道绑定的方法，提高了视频的帧率和分辨率。

Design of Network-based Video Communication System

With the development of mobile communication and multimedia communication, the multimedia service built on the wireless network has been accepted by more and more users. The typical bandwidth of 2.5 G CDMA mobile communication is 30~50 kb/s, which could transmit low-speed video signal, and however, for the multimedia application, its quality has not reached the requirements yet. Under the present technical condition, how to guarantee the quality of video flow in CDMAwireless channel and how to expand the bandwidth and raise the video quality are well worth studying. This paper proposes a framework for the transmission of video signal in multiple CDMA channel. By binding up multiple CDMA wireless channels, the frame rate and resolution of the video signal is thus enhanced.