Coverage Analysis of Cognitive Femtocell Networks

In heterogeneous networks, interference is one of the critical issues. In this letter, we consider a two-tier downlink network composed of macrocell base stations (MBSs) and femtocell base stations (FBSs), where the locations of MBSs and FBSs are modeled by two independent Poisson point processes (P...

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Bibliographic Details
Published in:IEEE wireless communications letters 2014-04, Vol.3 (2), p.177-180
Main Authors: Chia-Han Lee, Cheng-Yu Shih
Format: Article
Language:English
Subjects:
Aggregates
Approximation methods
Base stations
Femtocell networks
Femtocells
Interference
Radio frequency
stochastic geometry
Wireless communication
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Summary:In heterogeneous networks, interference is one of the critical issues. In this letter, we consider a two-tier downlink network composed of macrocell base stations (MBSs) and femtocell base stations (FBSs), where the locations of MBSs and FBSs are modeled by two independent Poisson point processes (PPPs). FBSs are assumed to be cognitive and become inactive when within a certain range of active MBSs. Due to the inactivation regions, the location distribution of active FBSs no longer follows PPP, complicating the calculation of coverage probability. To circumvent this, we propose an approximation to the coverage probability for both the open access and closed access policies.
ISSN:2162-2337
2162-2345
DOI:10.1109/WCL.2013.123013.130800