NCFSK error performance on slow fading channels in the presence of unsynchronized interferers

TitleNCFSK error performance on slow fading channels in the presence of unsynchronized interferers
Publication TypeConference Paper
Year of Publication1997
AuthorsChong, P. H. J., and C. Leung
Conference NameCommunications, Computers and Signal Processing, 1997. '10 Years PACRim 1987-1997 - Networking the Pacific Rim'. 1997 IEEE Pacific Rim Conference on
Pagination753 -757 vol.2
Date Publishedaug.
KeywordsBER, bit error rate, block error rate, cellular radio, co-channel interference, cochannel interference, Doppler frequency, error correction, error performance, error statistics, fading, frequency shift keying, land mobile radio, NCFSK modulation, noncoherent frequency shift keying, noncoherent FSK, radiofrequency interference, Rayleigh channels, Rayleigh-faded desired signal, Rayleigh-faded unsynchronized co-channel interferer, signal-to-interference ratio, slow fading channels, unsynchronized interferers

An expression for the bit error rate (BER) of noncoherent frequency shift keying (NCFSK) modulation with a non-faded desired signal and a single Rayleigh-faded unsynchronized co-channel interferer (UCCI) is derived. This is used to obtain the BER, Pf, for a Rayleigh-faded desired signal. It is found that Pf is not sensitive to the number, nI of UCCI's. It is shown that the BER with UCCI is smaller than that with synchronized co-channel interference (SCCI). For a Rayleigh-faded desired signal, the difference is about 0.8 dB for large signal-to-interference ratios (SIR). Simulation is used to obtain the block error rate (BKER) with UCCI as a function of nI, number of errors corrected and Doppler frequency. It is found that the BKER with no error correction increases with nI. The BKER with UCCI is generally smaller than that with SCCI. With error correction, the improvement in BKER tends to be larger as nI increases


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