Interference management with relay cooperation in two-hop interference channels

Jun Zhang, Khaled Letaief

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Relaying has been proposed as an efficient technique to extend coverage and improve throughput in future wireless networks. However, its performance gain is degraded in the presence of co-channel interference, which is intensified as the network density keeps increasing. In this letter, we investigate interference management in a two-hop interference channel with decode-and-forward relaying. To efficiently suppress interference, we propose different relay cooperation strategies with different information exchanged between relay nodes. A high SNR analysis is used to evaluate the performance and determine the achievable degrees of freedom while demonstrating the importance of time sharing between two hops. Through performance comparison and based on the implementation complexity of each cooperation strategy, we show that a zero-forcing based approach is attractive for interference management in two-hop interference channels.

Original languageEnglish
Article number6169936
Pages (from-to)165-168
Number of pages4
JournalIEEE Wireless Communications Letters
Volume1
Issue number3
DOIs
Publication statusPublished - Jun 2012
Externally publishedYes

Fingerprint

relay
interference
Wireless networks
Throughput
time sharing
degrees of freedom

Keywords

  • decode-and-forward relaying
  • Interference management
  • two-hop interference channel

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Physics and Astronomy (miscellaneous)
  • Electrical and Electronic Engineering

Cite this

Interference management with relay cooperation in two-hop interference channels. / Zhang, Jun; Letaief, Khaled.

In: IEEE Wireless Communications Letters, Vol. 1, No. 3, 6169936, 06.2012, p. 165-168.

Research output: Contribution to journalArticle

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