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A B-ISDN-compatible modem/codecCoded modulation techniques for development of a broadband integrated services digital network (B-ISDN)-compatible modem/codec are investigated. The selected baseband processor system must support transmission of 155.52 Mbit/s of data over an INTELSAT 72-MHz transponder. Performance objectives and fundamental system parameters, including channel symbol rate, code rate, and the modulation scheme are determined. From several candidate codes, a concatenated coding system consisting of a coded octal phase shift keying modulation as the inner code and a high rate Reed-Solomon as the outer code is selected and its bit error rate performance is analyzed by computer simulation. The hardware implementation of the decoder for the selected code is also described.
Document ID
19920005011
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Hemmati, F. (Communications Satellite Corp. Clarksburg, MD, United States)
Miller, S. (Communications Satellite Corp. Clarksburg, MD, United States)
Date Acquired
September 6, 2013
Publication Date
November 1, 1991
Publication Information
Publication: NASA. Lewis Research Center, Space Communications Technology Conference: Onboard Processing and Switching
Subject Category
Communications And Radar
Accession Number
92N14229
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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