Title :
Outage Probability with Correlated Lognormal Interferers using Log Shifted Gamma Approximation
Author :
Lam, C. L Joshua ; Le-Ngoc, Tho
Author_Institution :
Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, Que.
Abstract :
This paper presents an accurate computation of outage probability in cellular radio system by using log shifted gamma (LSG) approximation to model the sum of correlated lognormal random variables (RVs) for a wide range of dB spreads, number of interferers M, correlation coefficients r among interference components, and noise power N. The proposed LSG approximation consistently shows a better accuracy than the other existing lognormal approximation techniques, especially for small correlation coefficients r and/or dB spreads
Keywords :
approximation theory; cellular radio; correlation theory; gamma distribution; log normal distribution; radiofrequency interference; LSG; cellular radio system; correlated lognormal interferer; log shifted gamma approximation; outage probability; random variable; Approximation methods; Closed-form solution; Interchannel interference; Land mobile radio cellular systems; Power engineering computing; Power system modeling; Propagation losses; Random variables; Shadow mapping; Signal to noise ratio;
Conference_Titel :
Information, Communications and Signal Processing, 2005 Fifth International Conference on
Conference_Location :
Bangkok
Print_ISBN :
0-7803-9283-3
DOI :
10.1109/ICICS.2005.1689121
