Performance improvement of switched-based interference mitigation for channel assignment in over-loaded small-cell networks

Fakhreddine Gaaloul, Redha Mahmoud Radaydeh, Mohamed-Slim Alouini

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

This paper proposes adequate methods to improve the interference mitigation capability of a recently investigated switched-based interference reduction scheme for single downlink channel assignment in over-loaded small-cell networks. The model assumes that the available orthogonal channels for small cells are distributed among access points in close vicinity, where each access point knows its allocated channels a priori. Each cell has a single antenna, employs the open access strategy, and can reuse its allocated channels simultaneously, while scheduling concurrent service requests. Moreover, the access points can not coordinate their transmissions, and can receive limited feedback from active users. The paper presents low-complexity schemes to identify a suitable channel to serve the scheduled user by maintaining the interference power level within a tolerable range. They attempt to either complement the switched-based scheme by minimum interference channel selection or adopt different interference thresholds on available channels, while reducing the channel examination load. The optimal thresholds for interference mitigation at the desired receive station are quantified for various performance criteria. The performance and processing load of the proposed schemes are obtained analytically, and then compared to those of the single-threshold scheme via numerical and simulation results. © 2002-2012 IEEE.
Original languageEnglish (US)
Pages (from-to)2091-2103
Number of pages13
JournalIEEE Transactions on Wireless Communications
Volume12
Issue number5
DOIs
StatePublished - May 2013

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering

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