NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
High data rate modem simulation for the space station multiple-access communications systemThe communications system for the space station will require a space based multiple access component to provide communications between the space based program elements and the station. A study was undertaken to investigate two of the concerns of this multiple access system, namely, the issues related to the frequency spectrum utilization and the possibilities for higher order (than QPSK) modulation schemes for use in possible modulators and demodulators (modems). As a result of the investigation, many key questions about the frequency spectrum utilization were raised. At this point, frequency spectrum utilization is seen as an area requiring further work. Simulations were conducted using a computer aided communications system design package to provide a straw man modem structure to be used for both QPSK and 8-PSK channels.
Document ID
19880005488
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Horan, Stephen
(New Mexico State Univ. Las Cruces, NM, United States)
Date Acquired
September 5, 2013
Publication Date
November 1, 1987
Publication Information
Publication: NASA. Johnson Space Center, NASA(ASEE Summer Faculty Fellowship Program, 1987, Volume 1
Subject Category
Communications And Radar
Accession Number
88N14870
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
No Preview Available