DocumentCode :
930782
Title :
Distortionless frequency-shift keying: further results
Author :
O´Mahony, M.J. ; Cattermole, K.W.
Author_Institution :
University of Essex, Department of Electrical Engineering Science, Colchester, UK
Volume :
11
Issue :
24
fYear :
1975
Firstpage :
605
Lastpage :
607
Abstract :
In a previous letter, it was shown that digital frequency-shift signals could, in principle, be recovered without intersymbol interference, and a narrowband characteristic for binary f.s.k. was derived. The theory is now extended to cover both multilevel f.s.k. and wideband f.s.k. carried over lowpass channels. In all cases, channel characteristics can be found which yield zero i.s.i. in the signal after frequency demodulation. It is shown that, for a given information rate, the bandwidth required is minimised by use of 4-level f.s.k.
Keywords :
frequency shift keying; interference; distortionless frequency shift keying; frequency demodulation; intersymbol interference; lowpass channels; multilevel FSK; narrowband characteristic; wideband FSK;
fLanguage :
English
Journal_Title :
Electronics Letters
Publisher :
iet
ISSN :
0013-5194
Type :
jour
DOI :
10.1049/el:19750461
Filename :
4236990
Link To Document :
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