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

Mohamed Rihan, Maha Elsabrouty, Osamu Muta, Hiroshi Fumkawa

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

10 被引用数 (Scopus)

抄録

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.

本文言語英語
ホスト出版物のタイトル2014 11th International Symposium on Wireless Communications Systems, ISWCS 2014 - Proceedings
出版社Institute of Electrical and Electronics Engineers Inc.
ページ654-658
ページ数5
ISBN(電子版)9781479958634
DOI
出版ステータス出版済み - 10 21 2014
イベント2014 11th International Symposium on Wireless Communications Systems, ISWCS 2014 - Barcelona, スペイン
継続期間: 8 26 20148 29 2014

出版物シリーズ

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

その他

その他2014 11th International Symposium on Wireless Communications Systems, ISWCS 2014
Countryスペイン
CityBarcelona
Period8/26/148/29/14

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Computer Networks and Communications

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