DocumentCode :
752812
Title :
Microprocessor Bit Synchronizer for Shuttle Payload Communications
Author :
Houston, Sam W. ; Martin, Donald R. ; Stine, Larry R.
Author_Institution :
TRW Defense and Space Systems Group, Redondo Beach, CA
Volume :
26
Issue :
11
fYear :
1978
fDate :
11/1/1978 12:00:00 AM
Firstpage :
1594
Lastpage :
1603
Abstract :
An example of the growing influence of the microprocessor in communications is illustrated in this description of the payload bit synchronizer and other related payload signal processing functions for the Space Shuttle. Stored in firmware the microprogrammed control at 2.56 M-instructions/s accomplishes bit synchronization, matched filter detection, NRZ- 
conversion and frame synchronization for some thirty combinations of PCM formats and data rates.
conversion and frame synchronization for some thirty combinations of PCM formats and data rates.Keywords :
Bit synchronization; Microcomputer applications; Microprogramming; PSK signal detection; Satellite telemetry; Space Shuttle; Demodulation; Frequency synchronization; Microprocessors; NASA; Payloads; Signal processing; Space shuttles; Spread spectrum communication; Switches; Telemetry;
fLanguage :
English
Journal_Title :
Communications, IEEE Transactions on
Publisher :
ieee
ISSN :
0090-6778
Type :
jour
DOI :
10.1109/TCOM.1978.1094028
Filename :
1094028
Link To Document :
