Title :
Outage Probability and Capacity for Two-Tier Femtocell Networks by Approximating Ratio of Rayleigh and Log Normal Random Variables
Author :
Samarakoon, Sumudu ; Rajatheva, Nandana ; Bennis, Mehdi ; Latva-aho, Matti
Author_Institution :
Dept. of Commun. Eng., Univ. of Oulu, Oulu, Finland
Abstract :
This paper presents the derivation for per-tier outage probability of a randomly deployed femtocell network over an existing macrocell network. The channel characteristics of macro user and femto user are addressed by considering different propagation modeling for outdoor and indoor links. Location based outage probability analysis and capacity of the system with outage constraints are used to analyze the system performance. To obtain the simplified expressions, approximations of ratios of Rayleigh random variables (RVs), Rayleigh to log normal RVs and their weighted summations, are derived with the verifications using simulations.
Keywords :
Rayleigh channels; approximation theory; femtocellular radio; log normal distribution; Rayleigh random variables; location based outage probability analysis; log normal random variables; ratio of Rayleigh approximation; system capacity; two-tier femtocell networks; weighted summations; Analytical models; Approximation methods; Fading; Interference; Macrocell networks; Probability density function; Quality of service;
Conference_Titel :
Vehicular Technology Conference (VTC Spring), 2013 IEEE 77th
Conference_Location :
Dresden
DOI :
10.1109/VTCSpring.2013.6692686
