Title :
Selection diversity for wireless communications with non-identical Weibull statistics
Author :
Sagias, Nikos C. ; Karagiannidis, George K. ; Zogas, Dimitris A. ; Mathiopoulos, P. Takis
Author_Institution :
Inst. for Space Applications & Remote Sensing, Nat. Obs. of Athens, Greece
fDate :
29 Nov.-3 Dec. 2004
Abstract :
Motivated by the suitability of the Weibull distribution to model multipath fading channels, the performance of L-branch selection combining (SC) receivers, with non-identical statistics, is presented. Deriving a useful expression for the probability density function of the SC output signal-to-noise ratio (SNR), important performance metrics are studied. More specifically, a closed-form expression is derived for the moments of the combiner output SNR, which is used to study the average output SNR and the amount of fading. The average symbol error probability for several coherent and non-coherent, binary and multilevel modulation schemes is also obtained in closed-form.
Keywords :
Weibull distribution; digital radio; diversity reception; error statistics; fading channels; modulation; multipath channels; radio receivers; L-branch selection combining receivers; SC receivers; SNR; Weibull distribution; binary modulation; closed-form expression; coherent modulation; multilevel modulation; multipath channels; multipath fading channels; noncoherent modulation; nonidentical Weibull statistics; nonidentical statistics; probability density function; selection diversity; signal-to-noise ratio; symbol error probability; wireless communications; wireless digital communications; Closed-form solution; Diversity reception; Fading; Measurement; Probability density function; Signal to noise ratio; Statistical distributions; Statistics; Weibull distribution; Wireless communication;
Conference_Titel :
Global Telecommunications Conference, 2004. GLOBECOM '04. IEEE
Print_ISBN :
0-7803-8794-5
DOI :
10.1109/GLOCOM.2004.1379058
