Interference reduction of cellular relay networks in multiple-cell environment by spectrum agility

Seungmo Kim, Wan Choi, Yonghoon Choi, Jongmin Lee, Youngnam Han

Research output: Contribution to book or proceedingConference articlepeer-review

3 Scopus citations

Abstract

In this paper, we studied the method that improves the downlink performance of cellular relay system in multiple-cell environment by using cognitive radio. When relay stations in the network have spectrum agility, they can establish downlink channels which are orthogonal to downlink of base station. In this way, interference between base station and relay station can be reduced and spectral resource can be utilized more efficiently as well. To investigate the performance gain with spectrum agility, we quantify channel usage of the incumbent systems by i.i.d ON/OFF model and evaluate the normalized system capacity of spectrum-agile cellular relay network. The result of this paper shows that the spectrum-agile cellular relay network relieves other-cell interference and thus the system capacity is improved.

Original languageEnglish
Title of host publication2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2008
DOIs
StatePublished - 2008
Event2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2008 - Poznan, Poland
Duration: Sep 15 2008Sep 18 2008

Publication series

NameIEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC

Conference

Conference2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2008
Country/TerritoryPoland
CityPoznan
Period09/15/0809/18/08

Scopus Subject Areas

  • Electrical and Electronic Engineering

Keywords

  • Capacity
  • Outage probability
  • Relay
  • Spectrum agility

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