Proposal and Evaluation of Satellite Communication Systems for Distributed Cooperative Work

Abstract

Satellite communication systems suitable for applications in distributed cooperative work are proposed and evaluated. We have been proposing a new method of multimedia data communication, in which voice and video signals are exchanged via allocated SCPC channels, and burst data via code-division multiplexing (CDM). For burst data access, demand assignment and random access are compared. This burst data is transmitted in the same frequency band as voice and video data. The evaluation clarified that it is possible to support a considerable number of concurrent synchronous cooperation while conserving valuable bandwidth resources and alleviating the costs of expensive transponder usage.