Article

Telecommunication Systems

, Volume 52, Issue 2, pp 1305-1312

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

  • Jing ZhangAffiliated withDepartment of Electronics and Information Engineering, Huazhong University of Science and Technology
  • , Xiaohu GeAffiliated withDepartment of Electronics and Information Engineering, Huazhong University of Science and Technology Email author 
  • , Min ChenAffiliated withSchool of Computer Science and Engineering, Seoul National University
  • , Minho JoAffiliated withCollege of Information and Communication, Korea University Email author 
  • , Xi YangAffiliated withDepartment of Electronics and Information Engineering, Huazhong University of Science and Technology
  • , Qu DuAffiliated withDepartment of Electronics and Information Engineering, Huazhong University of Science and Technology
  • , Jinzhong HuAffiliated withDepartment of Electronics and Information Engineering, Huazhong University of Science and Technology

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Abstract

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.

Keywords

Femtocell Energy efficiency Kernel function Signal-to-interference ratio