Handling CCI and ICI in OFDMA femtocell networks through frequency scheduling

Şahin M., Guvenc I., Jeong M., ARSLAN H.

IEEE Transactions on Consumer Electronics, vol.55, no.4, pp.1936-1944, 2009 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 55 Issue: 4
  • Publication Date: 2009
  • Doi Number: 10.1109/tce.2009.5373753
  • Journal Name: IEEE Transactions on Consumer Electronics
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1936-1944
  • Keywords: Femtocell, OFDMA, co-channel interference, inter-carrier interference, cognitive radio
  • Istanbul Medipol University Affiliated: Yes

Abstract

Femtocells have a strong potential for increasing the efficiency and coverage of next-generation broadband wireless networks. In this paper, a co-channel framework for the coexistence of orthogonal frequency division multiple access (OFDMA) based macrocell and femtocell wireless networks is proposed. It is based on utilizing the resource blocks of macrocell-associated mobile stations (mMSs) that are far away to a femtocell base station (fBS), therefore avoiding strong interference that may occur between a femtocell and close-by mMSs. An avoidance method that jointly utilizes the spectrum sensing results as well as scheduling information obtained from the macrocell base station (mBS) is introduced. Moreover, the impact of inter-carrier interference (ICI) from the mMSs in the uplink is discussed and evaluated through simulations. © 2006 IEEE.