Title :
On the Effect of Correlation on the Performance of Dual Diversity Receivers in Lognormal Fading
Author :
Skraparlis, Dimitrios ; Sandell, Magnus ; Sakarellos, Vasileios K. ; Panagopoulos, Athanasios D. ; Kanellopoulos, John D.
Author_Institution :
Dept. of Electr. & Comput. Eng., Nat. Tech. Univ. of Athens, Zografou, Greece
fDate :
11/1/2010 12:00:00 AM
Abstract :
The bivariate lognormal distribution has been extensively utilized for modeling the fading gains of dual branch diversity receivers in both indoor and outdoor communication systems. The contribution of this letter is twofold: firstly, a general expression for the average bit-error probability (BEP) of diversity combining with two correlated lognormal fading branches is presented, based on a Gauss-Hermite sum approximation to the moment generating function. Secondly, using the proposed expression, it is shown that correlation can be viewed as an increase in the standard deviations of an equivalent diversity system with uncorrelated lognormal fading gains.
Keywords :
approximation theory; diversity reception; error statistics; fading channels; indoor communication; log normal distribution; BEP; Gauss-Hermite sum approximation; bit-error probability; bivariate lognormal distribution; dual branch diversity receiver; indoor communication system; lognormal fading; outdoor communication system; Approximation methods; Correlation; Diversity methods; Diversity reception; Fading; Polynomials; Signal to noise ratio; Bit-error probability; correlation; lognormal fading; moment generating function; receiver diversity combining;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2010.100810.101233
