On the Minimum Transmit Power in Cochannel Femtocells

Author

Mili, Mohammad Robat ; Hamdi, Khairi Ashour

Author_Institution

Sch. of EEE, Univ. of Manchester, Manchester, UK

Volume

16

Issue

7

fYear

2012

fDate

7/1/2012 12:00:00 AM

Firstpage

1026

Lastpage

1029

Abstract

This letter is concerned with the transmit power minimization in co-channel femtocell networks in order to reduce the interference inflicted on the macrocell users while satisfying a target constraint on either the ergodic capacity or the average BER under Rayleigh fading. New expressions are derived for the minimum downlink femtocell transmit power in the presence of co-channel interference from the macro base station. The power minimization problem is solved under a minimum transmission rate constraint as well as under a maximum bit error rate (BER) constraint in a Rayleigh fading environment.

Keywords

Rayleigh channels; cochannel interference; error statistics; femtocellular radio; interference suppression; minimisation; Rayleigh fading environment; cochannel femtocell network; cochannel interference; ergodic capacity; interference reduction; macrobase station; macrocell user; maximum BER; maximum bit error rate; minimum downlink femtocell power transmission; minimum transmission rate constraint; Bit error rate; Femtocell networks; Femtocells; Interference; Macrocell networks; Rayleigh channels; Femtocells; energy efficiency; interference;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2012.050112.120264

Filename

6196150