Precoder design for MIMO relay networks with direct link and decision feedback equalisation

Andrew Paul Millar, Stephan Weiss, Robert Stewart

Research output: Contribution to journalArticle

8 Citations (Scopus)


In this letter we derive the source and relay precoders for a multiple-input multiple-output (MIMO) relay system with zero-forcing (ZF) decision feedback equalisation (DFE) when a direct link exists between the source and destination. Assuming full channel state information (CSI) is available at each node in the network, the processors are optimised for a large class of objective functions subject to the ZF condition and average power constraints at both the source and relay terminals. Simulation results show that the proposed design outperforms existing techniques in terms of bit error ratio (BER).
Original languageEnglish
Pages (from-to)1044-1046
Number of pages3
JournalIEEE Communications Letters
Issue number10
Early online date25 Aug 2011
Publication statusPublished - Oct 2011



  • covariance matrix
  • decision feedback equalizers
  • MIMO
  • matrix decomposition
  • signal to noise ratio
  • transceivers

Cite this