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 Dec 1
Event2012 International Symposium on Information Theory and Its Applications, ISITA 2012 - Honolulu, HI, United States
Duration: 2012 Oct 282012 Oct 31

Publication series

Name2012 International Symposium on Information Theory and Its Applications, ISITA 2012

Other

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

ASJC Scopus subject areas

  • Computer Science Applications
  • Information Systems

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    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] (2012 International Symposium on Information Theory and Its Applications, ISITA 2012).