DocumentCode
953696
Title
Phase-Shift Radio Teletype
Author
Costas, John P.
Author_Institution
General Electric Co., Syracuse, N.Y.
Volume
45
Issue
1
fYear
1957
Firstpage
16
Lastpage
20
Abstract
A method whereby teletype transmission is accomplished by phase-shift rather than frequency-shift keying a carrier signal is outlined. Reception methods involving coherent or synchronous detectors are presented. Results indicate that the synchronous system offers an ultimate gain of 12.5 db over FSK with 10.5 db advantage realizable in the practical case. The practical synchronous system also shows an advantage of about 2.5 db over the Predicted Wave Radio Teletype System described by Doelz and Heald.
Keywords
Channel capacity; Detectors; Frequency shift keying; Gain; Helium; Phase detection; Radio link; Receivers; System testing; Teleprinting;
fLanguage
English
Journal_Title
Proceedings of the IRE
Publisher
ieee
ISSN
0096-8390
Type
jour
DOI
10.1109/JRPROC.1957.278250
Filename
4056368
Link To Document