Scaling Laws of Energy Efficiency Related Metrics for Varying Cell Radii in Downlink Cellular Systems

Author

Hansung Leem ; Hu Jin ; Dan Keun Sung

Author_Institution

Dept. of Electr. Eng., KAIST, Daejeon, South Korea

Volume

17

Issue

3

fYear

2013

fDate

Mar-13

Firstpage

525

Lastpage

528

Abstract

Energy efficiency in wireless communication systems has recently attracted great interest. Small-sized cell topology is a key idea for energy saving. In this letter, we characterize the scaling laws of energy efficiency related metrics such as base station (BS) transmit power, capacity per user, and energy efficiency per user for varying cell radii in downlink cellular networks by investigating the asymptotic behaviors. The scaling laws of the BS transmit power per user, capacity per user, and energy efficiency per user follow R^γ-2, R^-2, and R^-γ, respectively, where R is the cell radius and γ denotes the path loss exponent.

Keywords

cellular radio; energy conservation; telecommunication network topology; BS; base station power transmission; capacity per user; cell radii variation; downlink cellular system; energy efficiency related metric; energy saving; path loss exponent; scaling law characterization; small-sized cell topology; wireless communication system; Bandwidth; Computer architecture; Downlink; Interference; Measurement; Microprocessors; Topology; Energy efficiency; Poisson point process; cell size; user activity;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2013.020413.122692

Filename

6459487