NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Novel applications of the NASA/GSFC Viterbi decoder hardware simulatorThe NASA/GSFC developed an all digital, real time, programmable Viterbi decoder simulator operating at rates up to 6 Msps. With this simulator, the bit error rate (BER) performance of convolutionally encoded/Viterbi decoded Shuttle-TDRSS return link channels under pulsed radio frequency interference (RFI) conditions has been predicted. The principles of the simulator are described with special emphasis on the channel simulator and the essential interaction between CLASS software and the simulator. The sensitivity of coded BER as function of several illustrative RFI parameters is discussed for two typical Shuttle-TDRSS return link configurations.
Document ID
19850008648
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Walvis, D. J. M. (Stanford Telecommunication, Inc., McLean Va., United States)
Weinberg, A. (Stanford Telecommunication, Inc., McLean Va., United States)
Herr, D. W. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Schwartz, J. J. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1985
Publication Information
Publication: NASA. Johnson Space Center Space Shuttle Tech. Conf., Pt. 2
Subject Category
Communications And Radar
Accession Number
85N16957
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Related Records

IDRelationTitle19850008628Collected WorksSpace Shuttle Technical Conference, Part 2
No Preview Available