TY - GEN
T1 - On the statistics of the sum of correlated generalized-K RVs
AU - Al-Ahmadi, Saad
AU - Yanikomeroglu, Halim
PY - 2010
Y1 - 2010
N2 - Appropriate channel modeling plays an important role in the design and analysis of various transmission and reception schemes over composite fading channels. The generalized-K (Gamma-Gamma) composite fading model has been used recently to model composite fading in wireless channels as an alternative to the less tractable lognormal-based models. In this paper, the expression of the amount of fading for the sum of correlated generalized-K random variables is derived and then the moment matching method is used to approximate, in the lower tail region, the probability density function of the sum of identically distributed generalized-K random variables with positively and equally correlated shadowing components by the familiar Gamma distribution. Furthermore, the obtained expressions of the amount of fading give insights into the effect of shadowing correlations on the performance of maximal ratio combining receivers in coordinated multi-point transmission and reception schemes in future wireless systems.
AB - Appropriate channel modeling plays an important role in the design and analysis of various transmission and reception schemes over composite fading channels. The generalized-K (Gamma-Gamma) composite fading model has been used recently to model composite fading in wireless channels as an alternative to the less tractable lognormal-based models. In this paper, the expression of the amount of fading for the sum of correlated generalized-K random variables is derived and then the moment matching method is used to approximate, in the lower tail region, the probability density function of the sum of identically distributed generalized-K random variables with positively and equally correlated shadowing components by the familiar Gamma distribution. Furthermore, the obtained expressions of the amount of fading give insights into the effect of shadowing correlations on the performance of maximal ratio combining receivers in coordinated multi-point transmission and reception schemes in future wireless systems.
KW - Amount of fading
KW - Composite fading
KW - Distributed antenna systems
KW - Diversity gain
KW - Generalized-K model
KW - Multipath fading
KW - Shadowing
KW - Shadowing correlations
UR - https://www.scopus.com/pages/publications/77955394261
U2 - 10.1109/ICC.2010.5501945
DO - 10.1109/ICC.2010.5501945
M3 - Conference contribution
AN - SCOPUS:77955394261
SN - 9781424464043
T3 - IEEE International Conference on Communications
BT - 2010 IEEE International Conference on Communications, ICC 2010
ER -