NDLI: Error floors in narrowband digital FM systems

Content Provider	IEEE Xplore Digital Library
Author	Petrovic, R. Filipovic, S.
Copyright Year	1997
Description	Author affiliation: Center for Wireless Commun., Mississippi Univ., University, MS, USA (Petrovic, R.)
Abstract	A digital FM system in the presence of simulcast interference and/or Rayleigh fading exhibits performance floors, where increased signal strength does not reduce the error rate. The mechanism which generates FM clicks even in the region of high SNRs, in simulcast as well as in multipath, is suggested. It is shown that a simple model based on two unmodulated carriers is capable of not only qualitatively explaining the phenomenon, but also of providing quantitative estimates which match well with experimental results obtained both in laboratory and in field tests. The observed "equivalency" of the Doppler spread and the frequency offset in their effect on the BER has been given an analytic form. The analysis applies to a narrowband M-FSK system with FM discriminator and post-detection filter.
Starting Page	244
Ending Page	248
File Size	531205
Page Count	5
File Format	PDF
ISBN	0780338448
DOI	10.1109/SECON.1997.598681
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-04-12
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Narrowband Frequency modulation Fading Bit error rate Interference Amplitude modulation Phase noise Oscilloscopes Detectors Transmitters
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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