DocumentCode
770076
Title
Frequency Counting Modulator
Author
Nakajima, Shigeo
Author_Institution
NTT Corp., Japan
Volume
31
Issue
12
fYear
1983
fDate
12/1/1983 12:00:00 AM
Firstpage
1280
Lastpage
1285
Abstract
One modulation method called the frequency counting modulator (FCM), which can produce various constant envelope signals, is proposed. The FCM is materialized by only digital circuits and, therefore, is easily implemented in a large scale integrated circuit (LSI). From analytical study of the FCM, design formulas are derived for MSK-type modulation, and modulated signal performance features are clarified in terms of minimum signal distance, the effect of a Gaussian receiving filter, and spectral power concentration.
Keywords
Digital modulation/demodulation; Frequency-shift keying; Minimum-shift keying; Digital circuits; Digital modulation; Educational institutions; Frequency modulation; Large scale integration; Phase shift keying; Pulse modulation; Satellite communication; Sections; Timing;
fLanguage
English
Journal_Title
Communications, IEEE Transactions on
Publisher
ieee
ISSN
0090-6778
Type
jour
DOI
10.1109/TCOM.1983.1095776
Filename
1095776
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