移动卫星信道中的视频传输

Mobile transmission of video signals in satellite channels

为向远程便携通信设备提供低速率的视频服务,提出了一种基于卫星信道的级联编码系统,该系统综合运用了实时信道估计、软判决译码、TCM、深度交织和纠错编码等技术,它不仅可用于语音通信,也适用于MPEG-4标准的图像传输。

To provide portable communications services to remote areas,this paper addressed the concate-nated coding system,which is the joint design of on-line channel estimation,soft-decision decoding,trellis-coded modulation.The system will be used to both voice and low bit-rate video image communication in MPEG-4.