NCFSK bit-error rate with unsynchronized slowly fading interferers

TitleNCFSK bit-error rate with unsynchronized slowly fading interferers
Publication TypeJournal Article
Year of Publication2001
AuthorsChong, P. H. J., and C. Leung
JournalCommunications, IEEE Transactions on
Pagination272 -281
Date Publishedfeb.
Keywordsadditive white Gaussian noise, approximate method, AWGN, BER performance, bit-error rate, cellular radio, cellular systems, cochannel interference, error statistics, frequency shift keying, interference-limited environment, NCFSK bit-error rate, noncoherent frequency-shift keying, nonfaded desired signal, Rayleigh channels, Rayleigh-faded unsynchronized cochannel interferers, Rician channels, Rician-faded desired signal, synchronisation, synchronized cochannel interferers, unsynchronized slowly fading interferers

An expression for the bit-error rate (BER) of noncoherent frequency-shift keying with a nonfaded desired signal in the presence of N Rayleigh-faded unsynchronized cochannel interferers (UCCIs) and additive white Gaussian noise is first derived. This result can be used to obtain the BER for a faded desired signal. For a large number of UCCIs, numerical evaluation of this expression can be quite time-consuming. An approximate method that yields fairly accurate results is thus described. Numerical results show that for a Rician-faded desired signal with a strong specular component in an interference-limited environment, the BER decreases slightly with N whereas for a Rayleigh-faded desired signal, the BER varies very little with N. A comparison to the BER performance with synchronized cochannel interferers is also provided


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