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

fYear

2013

fDate

2-5 June 2013

Firstpage

1

Lastpage

5

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference (VTC Spring), 2013 IEEE 77th

Conference_Location

Dresden

ISSN

1550-2252

Type

conf

DOI

10.1109/VTCSpring.2013.6692686

Filename

6692686