Iterative interference alignment in macrocell-femtocell networks: A cognitive radio approach

Mohamed Rihan, Maha Elsabrouty, Osamu Muta, Hiroshi Fumkawa

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

10 Citations (Scopus)

Abstract

The deployment of femtocells in current and future communication systems promises an effective solution for limited indoor coverage problem and a possible gateway for mobile data offloading. In this paper, we cast a cognitive interference alignment approach (IA) suitable for heterogeneous cellular networks with a mixed macrocell and femtocell deployment Specifically, in our approach a restricted waterfilling (RWF) algorithm is used to maximize the downlink data rate, while reserving some eigenmodes for giving the femtocell basestations the opportunity to do their transmissions even at high signal-to-noise power ratio (SNR) for the macrocell basestation. Additionally, both the cross-tier and co-tier interference is to be aligned at each femtocell user's receiver using an Iterative Reweighted Least Squares(IRLS) algorithm. The simulation results show that the proposed IA approach provides an improved sum rate for the femtocell users, compared to the conventional IA techniques, like, the leakage minimization approach and the nuclear norm based rank constraint rank minimization approach.

Original languageEnglish
Title of host publication2014 11th International Symposium on Wireless Communications Systems, ISWCS 2014 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages654-658
Number of pages5
ISBN (Electronic)9781479958634
DOIs
Publication statusPublished - Oct 21 2014
Event2014 11th International Symposium on Wireless Communications Systems, ISWCS 2014 - Barcelona, Spain
Duration: Aug 26 2014Aug 29 2014

Publication series

Name2014 11th International Symposium on Wireless Communications Systems, ISWCS 2014 - Proceedings

Other

Other2014 11th International Symposium on Wireless Communications Systems, ISWCS 2014
CountrySpain
CityBarcelona
Period8/26/148/29/14

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Computer Networks and Communications

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    Rihan, M., Elsabrouty, M., Muta, O., & Fumkawa, H. (2014). Iterative interference alignment in macrocell-femtocell networks: A cognitive radio approach. In 2014 11th International Symposium on Wireless Communications Systems, ISWCS 2014 - Proceedings (pp. 654-658). [6933435] (2014 11th International Symposium on Wireless Communications Systems, ISWCS 2014 - Proceedings). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISWCS.2014.6933435