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524 IEEE TRANSACTIONS ON SIGNAL PROCESSING, VOL. 46, NO. 2, FEBRUARY 1998 Comments on "FSK Demodulation Using
 

Summary: 524 IEEE TRANSACTIONS ON SIGNAL PROCESSING, VOL. 46, NO. 2, FEBRUARY 1998
Comments on "FSK Demodulation Using
an Adaptive Recursive Digital Filter"
Mohamad Adnan Al-Alaoui
Abstract--In a recent paper by Werter, an unjustified normal frequency
distribution is assumed, and then, the resulting error probability is
compared with that of the traditional noncoherent frequency shift key-
ing (FSK). However, the traditional FSK demodulators were developed
because such a distribution could not be justified. This work presents a
more appropriate error probability expression.
Index Terms-- Angle modulation, binary frequency shift keying
(BFSK), communications, demodulation, digital filtering, digital
modulation, error bound, frequency shift keying (FSK), probability
of error.
I. INTRODUCTION
In a recent paper [1], the author (Werter) states, correctly, that
"traditionally, FSK demodulation is accomplished by using a set of
matched filters (a filter bank), envelope detectors, and a comparator."
At the end of the paper, however, he assumes a normal frequency dis-
tribution to obtain a probability of error expression that he compares

  

Source: Al-Alaoui, Mohamad Adnan - Faculty of Engineering and Architecture, American University of Beirut, Lebanon

 

Collections: Engineering