Telecommunication Systems

, Volume 52, Issue 2, pp 1305–1312

Uplink energy efficiency analysis for two-tier cellular access networks using kernel function



In this paper, the uplink energy efficiency and uplink outage probability for two-tier cellular access networks (TTCANs) are investigated. To model of the uplink energy efficiency and uplink outage probability in TTCANs, a closed-form expression of signal-to-interference ratio (SIR) is derived by considering the on/off states of femtocell access points (APs). Moreover, a second order kernel function is firstly used to solve the analytical interference model with femtocell APs turning on in TTCANs. Simulation results show that femtocell user’s intensity has great impact on the uplink energy efficiency and uplink outage probability in a TTCAN. These results provide some guidelines for developing new energy saving schemes in practical TTCANs deployment.


Femtocell Energy efficiency Kernel function Signal-to-interference ratio 


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© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  1. 1.Department of Electronics and Information EngineeringHuazhong University of Science and TechnologyWuhanChina
  2. 2.School of Computer Science and EngineeringSeoul National UniversitySeoulKorea
  3. 3.College of Information and CommunicationKorea UniversitySeoulSouth Korea

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