NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
A burst compression and expansion technique for variable-rate users in satellite-switched TDMA networksA burst compression and expansion technique is described for asynchronously interconnecting variable-data-rate users with cost-efficient ground terminals in a satellite-switched, time-division-multiple-access (SS/TDMA) network. Compression and expansion buffers in each ground terminal convert between lower rate, asynchronous, continuous-user data streams and higher-rate TDMA bursts synchronized with the satellite-switched timing. The technique described uses a first-in, first-out (FIFO) memory approach which enables the use of inexpensive clock sources by both the users and the ground terminals and obviates the need for elaborate user clock synchronization processes. A continuous range of data rates from kilobits per second to that approaching the modulator burst rate (hundreds of megabits per second) can be accommodated. The technique was developed for use in the NASA Lewis Research Center System Integration, Test, and Evaluation (SITE) facility. Some key features of the technique have also been implemented in the ground terminals developed at NASA Lewis for use in on-orbit evaluation of the Advanced Communications Technology Satellite (ACTS) high burst rate (HBR) system.
Document ID
19900038618
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Budinger, James M.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1990
Subject Category
Space Communications, Spacecraft Communications, Command And Tracking
Report/Patent Number
AIAA PAPER 90-0850
Meeting Information
Meeting: AIAA International Communication Satellite Systems Conference and Exhibit
Location: Los Angeles, CA
Country: United States
Start Date: March 11, 1990
End Date: March 15, 1990
Accession Number
90A25673
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available