Accession Number : ADA135942

Title :   Issues in Satellite Packet Video Communication.

Descriptive Note : Research rept.,

Corporate Author : UNIVERSITY OF SOUTHERN CALIFORNIA MARINA DEL REY INFORMATION SCIENCES INST

Personal Author(s) : Casner,S L ; Cohen,D ; Cole,E R

PDF Url : ADA135942

Report Date : Jul 1983

Pagination or Media Count : 16

Abstract : Recent advances in packet communication over satellite links make it now possible, for the first time, to seriously consider the application of this technology to real-time video transmission. Unfortunately, packet communication over satellite links poses several severe problems for real-time video applications: The data rate available on packet satellite links is usually below what is required for real-time video applications; this data rate is shared dynamically with many other users with unpredictable demands; the delay associated with any use of a geosynchronous satellite is very large; and the error characteristics vary as a result of many uncontrollable external factors. This paper discusses the problems, suggests several techniques to cope with them, and describes the application of these techniques in a real-time packet video communication system being implemented at ISI. (Author)

Descriptors :   *Packets, *Video signals, *Satellite communications, Digital computers, Parallel processing, Microprocessors, Synchronous satellites, Real time, Data rate, Algorithms, External, Errors, Transmittance, Control

Subject Categories : Unmanned Spacecraft
      Non-radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE