Title :
FSK demodulation using an adaptive recursive digital filter
Author :
Werter, Michael J.
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
fDate :
7/1/1996 12:00:00 AM
Abstract :
A second-order adaptive recursive digital filter is used for frequency-shift keying (FSK) demodulation. Explicit formulas are derived for the noise variance in the frequency detector, and optimum transmitter carrier frequencies and detector threshold frequencies are calculated. A formula for the adaptation time is derived and the error probability is found. Computer simulations verify the derived results
Keywords :
IIR filters; adaptive filters; adaptive signal detection; adaptive signal processing; error statistics; frequency shift keying; interference (signal); least mean squares methods; noise; probability; recursive filters; FSK demodulation; IIR LMS algorithm; adaptation time; adaptive recursive digital filter; computer simulations; detector threshold frequencies; error probability; frequency detector; frequency-shift keying; noise variance; optimum transmitter carrier frequencies; Adaptive filters; Additive white noise; Band pass filters; Demodulation; Digital filters; Finite impulse response filter; Frequency shift keying; Gaussian noise; Signal processing algorithms; Transfer functions;
Journal_Title :
Signal Processing, IEEE Transactions on
