Title :
Effect of a Cochannel Interferer on an Automatic Frequency Control Loop in Fading Channels
Author :
Emad, Amin ; Beaulieu, Norman C.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Alberta, Edmonton, AB
Abstract :
The mean time to loss of lock and the average switching rate of an automatic frequency control loop operating in fading in the presence of a single interferer are derived. Closed-form expressions and integral form formulas are derived for the general case of modulated carriers as well as important special cases of similar modulations and unmodulated carriers. The general results include, as special cases, some previous more restricted results. Fading channels are assumed to be independent non-identically distributed (i.n.d.) with Rayleigh, Rician and Nakagami-m distributions while the special case of independent identically distributed (i.i.d.) channels is also considered. Corresponding numerical examples are provided and discussed to illustrate the results.
Keywords :
Nakagami channels; Rayleigh channels; Rician channels; cochannel interference; Nakagami-m distributions; Rayleigh distributions; Rician distributions; automatic frequency control loop; average switching rate; closed-form expressions; cochannel interferer; fading channels; independent identically distributed channels; unmodulated carriers; Automatic frequency control; Automatic speech recognition; Control systems; Detectors; Fading; Filters; Interference; Rayleigh channels; Rician channels; Voltage-controlled oscillators;
Conference_Titel :
Wireless Communications and Networking Conference, 2009. WCNC 2009. IEEE
Conference_Location :
Budapest
Print_ISBN :
978-1-4244-2947-9
Electronic_ISBN :
1525-3511
DOI :
10.1109/WCNC.2009.4917694
