Multiuser cooperative multiplexing with interference suppression in wireless relay networks

Chang Kyung Sung, Iain B. Collings

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

In this paper, we consider multiuser cooperative multiplexing schemes in cellular networks with fixed relays and address the problem of inter-user interference. We propose two schemes to mitigate the effect of the interference: an interference cancellation scheme and a cooperative precoding scheme. The interference cancellation scheme utilizes the broadcast nature of the signal transmitted to the fixed relay, and is based on a decode-and-forward relaying protocol. We provide a capacity bound for the proposed scheme, and also propose a power reduction scheme for the fixed relay. For the cooperative precoding scheme, we employ a cooperative linear filter at the transmitter to eliminate interference. Simulation results show that both proposed schemes enhance the achievable throughput significantly.

Original languageEnglish
Article number5494765
Pages (from-to)2528-2538
Number of pages11
JournalIEEE Transactions on Wireless Communications
Volume9
Issue number8
DOIs
Publication statusPublished - Aug 2010
Externally publishedYes

Keywords

  • Cooperative transmission
  • decode-and-forward
  • interference mitigation

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