Title :
Switched diversity receivers over generalized gamma fading channels
Author :
Sagias, Nikos C. ; Mathiopoulos, P. Takis
Author_Institution :
Inst. for Space Applications & Remote Sensing, Nat. Obs. of Athens, Greece
Abstract :
A versatile envelope distribution which generalizes several commonly used fading models is the generalized Gamma (GG) distribution. This letter deals with the performance analysis of switch and stay combining (SSC) receivers operating over not necessarily identical GG fading channels. For these receivers, novel analytical expressions for the moments of the output signal-to-noise ratio (SNR) (including average SNR and amount of fading), outage probability, average bit error probability (ABEP), and Shannon average spectral efficiency (ASE) are derived. Moreover, closed-form expressions are obtained for the optimal average SNR, ABEP, and ASE switching thresholds. Special cases of the derived expressions agree with known results.
Keywords :
diversity reception; error statistics; fading channels; gamma distribution; log normal distribution; radio receivers; ABEP; ASE; Nakagami-m channel; SSC receiver; Shannon average spectral efficiency; Weibull distribution; average bit error probability; generalized gamma fading channel; lognormal distribution; outage probability; switch and stay combining; switched diversity receiver; versatile envelope distribution; Closed-form solution; Diversity reception; Error probability; Performance analysis; Rayleigh channels; Remote sensing; Signal analysis; Signal to noise ratio; Switches; Weibull fading channels;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2005.10026
