用于商业视频通信的新型卫星数字视频TDMA系统

[Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications Pub Date : 1992-06-14 DOI:10.1109/ICC.1992.268022

S. Kato, S. Kubota, H. Kazama, M. Morikura

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引用次数: 10

摘要

提出了一种用于商业视频通信的综合卫星数字视频系统，实现了多点到多点的动态信道分配，同时传输多个视频信号，有效利用了转发器的发射功率。采用高编码增益、高编码速率前向纠错的偏移正交相移键控(QPSK)调制方案在非线性卫星信道中具有紧凑的频谱特性和高抗干扰特性。针对仅接收视频信号终端的后向语音信道传输，提出了一种采用同信道干扰消除技术的单转发器在时分多址视频信号上叠加扩频多址语音信号传输方案

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Novel satellite digital video TDMA system for business video communications

The authors propose an integrated satellite digital video system for business video communications which realizes multipoint to multipoint dynamic channel assignment, simultaneous plural video signal transmission, and efficient use of the transponder transmission power. An offset quadrature phase shift keying (QPSK) modulation scheme with a high-coding-gain high-coding-rate forward error correction scheme obtains compact spectrum characteristics and highly interference-resistant characteristics in nonlinear satellite channels. For backward voice channel transmission from video signal receive-only terminals, a superposed spread spectrum multiple access voice signal transmission scheme over a time division multiple access video signal through one transponder that employs a cochannel interference cancellation technique is proposed.<>

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[Conference Record] SUPERCOMM/ICC '92 Discovering a New World of Communications

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