Title :
On the Performance of an Automatic Frequency Control Loop in Dissimilar Fading Channels in the Presence of Interference
Author :
Emad, Amin ; Beaulieu, Norman C.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Illinois at Urbana-Champaign, Urbana, IL, USA
fDate :
12/1/2011 12:00:00 AM
Abstract :
Two effects of a single interference on the performance of an automatic frequency control (AFC) loop are explained, and two measures, average switching rate and mean time to loss of lock, are presented to capture the impact of each effect. These measures are derived in closed-form expressions and single integral formulas in dissimilar fading channels with Rayleigh, Rician, and Nakagami-m distributions. The general case of modulated carriers as well as different special cases are considered. Numerical examples are provided to illustrate the effects of different fading scenarios on the performance of an AFC. The effect of maximum Doppler frequency on the performance of the AFC is also investigated.
Keywords :
Nakagami channels; Rayleigh channels; Rician channels; automatic frequency control; radiofrequency interference; Nakagami-m distribution; Rayleigh distribution; Rician distribution; automatic frequency control loop; average switching rate; dissimilar fading channels; maximum Doppler frequency; mean time to loss of lock; single interference; Fading; Frequency control; Interference; Nakagami distribution; Rayleigh channels; Rician channels; Speech recognition; Automatic frequency control loop; Nakagami; Rayleigh; Rician; average switching rate; dissimilar fading channels; interference; mean time to loss of lock; outage;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOMM.2011.071111.100351
