Interference mitigation depending on the number of antennas and CSI available at femtocells

Genji Hayashi, Tomoaki Ohtsuki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Femtocells have become popular recently as a key technology to improve coverage in indoor environments. However, since femto base stations (FBSs) utilize the same spectrum as existing macro base stations (MBSs), interference between macrocells and femtocells as well as between femtocells needs to be carefully controlled. In this paper, we propose adjacent cell interference mitigation techniques exploiting transmit power control and beamforming depending on the number of antennas and channel state information (CSI) available at FBSs in the environment where closed subscriber group (CSG) FBSs are deployed densely in a macrocell. Simulation results show that the proposed techniques are effective for improving the signal-to-interference plus noise ratio (SINR) for all user equipments (UEs) including both macro and femto UEs at 5 % of the cumulative distribution function (CDF).

Original languageEnglish
Title of host publication2012 International Symposium on Information Theory and Its Applications, ISITA 2012
Pages150-154
Number of pages5
Publication statusPublished - 2012
Event2012 International Symposium on Information Theory and Its Applications, ISITA 2012 - Honolulu, HI, United States
Duration: 2012 Oct 282012 Oct 31

Other

Other2012 International Symposium on Information Theory and Its Applications, ISITA 2012
CountryUnited States
CityHonolulu, HI
Period12/10/2812/10/31

Fingerprint

Femtocell
Channel state information
Base stations
Antennas
Macros
Beamforming
Power control
Distribution functions

ASJC Scopus subject areas

  • Computer Science Applications
  • Information Systems

Cite this

Hayashi, G., & Ohtsuki, T. (2012). Interference mitigation depending on the number of antennas and CSI available at femtocells. In 2012 International Symposium on Information Theory and Its Applications, ISITA 2012 (pp. 150-154). [6400905]

Interference mitigation depending on the number of antennas and CSI available at femtocells. / Hayashi, Genji; Ohtsuki, Tomoaki.

2012 International Symposium on Information Theory and Its Applications, ISITA 2012. 2012. p. 150-154 6400905.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Hayashi, G & Ohtsuki, T 2012, Interference mitigation depending on the number of antennas and CSI available at femtocells. in 2012 International Symposium on Information Theory and Its Applications, ISITA 2012., 6400905, pp. 150-154, 2012 International Symposium on Information Theory and Its Applications, ISITA 2012, Honolulu, HI, United States, 12/10/28.
Hayashi G, Ohtsuki T. Interference mitigation depending on the number of antennas and CSI available at femtocells. In 2012 International Symposium on Information Theory and Its Applications, ISITA 2012. 2012. p. 150-154. 6400905
Hayashi, Genji ; Ohtsuki, Tomoaki. / Interference mitigation depending on the number of antennas and CSI available at femtocells. 2012 International Symposium on Information Theory and Its Applications, ISITA 2012. 2012. pp. 150-154
@inproceedings{bd189e4638ac409ebce1a1bc7e3f4e1e,
title = "Interference mitigation depending on the number of antennas and CSI available at femtocells",
abstract = "Femtocells have become popular recently as a key technology to improve coverage in indoor environments. However, since femto base stations (FBSs) utilize the same spectrum as existing macro base stations (MBSs), interference between macrocells and femtocells as well as between femtocells needs to be carefully controlled. In this paper, we propose adjacent cell interference mitigation techniques exploiting transmit power control and beamforming depending on the number of antennas and channel state information (CSI) available at FBSs in the environment where closed subscriber group (CSG) FBSs are deployed densely in a macrocell. Simulation results show that the proposed techniques are effective for improving the signal-to-interference plus noise ratio (SINR) for all user equipments (UEs) including both macro and femto UEs at 5 {\%} of the cumulative distribution function (CDF).",
author = "Genji Hayashi and Tomoaki Ohtsuki",
year = "2012",
language = "English",
isbn = "9784885522673",
pages = "150--154",
booktitle = "2012 International Symposium on Information Theory and Its Applications, ISITA 2012",

}

TY - GEN

T1 - Interference mitigation depending on the number of antennas and CSI available at femtocells

AU - Hayashi, Genji

AU - Ohtsuki, Tomoaki

PY - 2012

Y1 - 2012

N2 - Femtocells have become popular recently as a key technology to improve coverage in indoor environments. However, since femto base stations (FBSs) utilize the same spectrum as existing macro base stations (MBSs), interference between macrocells and femtocells as well as between femtocells needs to be carefully controlled. In this paper, we propose adjacent cell interference mitigation techniques exploiting transmit power control and beamforming depending on the number of antennas and channel state information (CSI) available at FBSs in the environment where closed subscriber group (CSG) FBSs are deployed densely in a macrocell. Simulation results show that the proposed techniques are effective for improving the signal-to-interference plus noise ratio (SINR) for all user equipments (UEs) including both macro and femto UEs at 5 % of the cumulative distribution function (CDF).

AB - Femtocells have become popular recently as a key technology to improve coverage in indoor environments. However, since femto base stations (FBSs) utilize the same spectrum as existing macro base stations (MBSs), interference between macrocells and femtocells as well as between femtocells needs to be carefully controlled. In this paper, we propose adjacent cell interference mitigation techniques exploiting transmit power control and beamforming depending on the number of antennas and channel state information (CSI) available at FBSs in the environment where closed subscriber group (CSG) FBSs are deployed densely in a macrocell. Simulation results show that the proposed techniques are effective for improving the signal-to-interference plus noise ratio (SINR) for all user equipments (UEs) including both macro and femto UEs at 5 % of the cumulative distribution function (CDF).

UR - http://www.scopus.com/inward/record.url?scp=84873544951&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84873544951&partnerID=8YFLogxK

M3 - Conference contribution

SN - 9784885522673

SP - 150

EP - 154

BT - 2012 International Symposium on Information Theory and Its Applications, ISITA 2012

ER -