FSK demodulation using an adaptive recursive digital filter

Author

Werter, Michael J.

Author_Institution

Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA

Volume

44

Issue

7

fYear

1996

fDate

7/1/1996 12:00:00 AM

Firstpage

1822

Lastpage

1825

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;

fLanguage

English

Journal_Title

Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1053-587X

Type

jour

DOI

10.1109/78.510630

Filename

510630