Abstract
This chapter discusses several topics in Simulink based on frequency‐shift keying (FSK) modulation in fading channels. Specifically these topics include: binary frequency shift keying (BFSK) bit error rate (BER) performance in Rayleigh fading; MFSK BER performance in Rayleigh fading; BFSK BER performance in Rician fading; and continuous‐phase frequency‐shift keying (CPFSK) BER performance in Rician fading with Multipath. Theoretical FSK BER performance in additive white Gaussian noise (AWGN) is well known. However, when the channel exhibits fading, BER performance for specific modulations depends on the selected fading model and is severely degraded from performance in AWGN. Simulink models allow the BER performance in the presence of multipath to be readily estimated. This capability, provided by Simulink, is important since estimation of BER in the presence of multipath is not easily obtained analytically.
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