Improving Network Energy Efficiency through Transmit Antenna Number and Transmission Mode Selection in Multicell Systems

Author

Li, Shichao ; Qiu, Ling

Author_Institution

Dept. of Electron. Eng. & Inf. Sci., Univ. of Sci. & Technol. of China, Hefei, China

fYear

2012

fDate

6-9 May 2012

Firstpage

1

Lastpage

5

Abstract

We consider the problem of maximizing network energy efficiency (NEE) in multicell systems, which is defined as the total capacity of all users divided by the total base station (BS) power consumption in the system. We first provide closed-form expressions for NEE when BSs take different combinations of transmission modes and active transmit antenna number. Based on these and assuming all users´ statistical channel state information (CSI) is available in all BSs, we provide an algorithm in which the combination with the best network energy efficiency can be selected. Simulations show that, for each combination the calculation results of NEE fit well with the simulation results, and the NEE-optimal combination can be adaptively selected given the users´s locations. At last we analyze why the chosen combination is optimal with respect of NEE.

Keywords

cellular radio; energy conservation; transmitting antennas; NEE optimal combination; base station power consumption; channel state information; multicell systems; network energy efficiency; transmission mode selection; transmit antenna number; Closed-form solutions; Interference; Power demand; Signal to noise ratio; Simulation; Transmitting antennas; Vectors;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference (VTC Spring), 2012 IEEE 75th

Conference_Location

Yokohama

ISSN

1550-2252

Print_ISBN

978-1-4673-0989-9

Electronic_ISBN

1550-2252

Type

conf

DOI

10.1109/VETECS.2012.6239888

Filename

6239888