Joint power control and beamforming for interference MIMO relay channel

Muhammad R. A. Khandaker*, Yue Rong

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)


In this paper, we consider an interference multiple-input multiple-output (MIMO) relay system where multiple source nodes communicate with their desired destination nodes with the aid of distributed relay nodes. An iterative algorithm is developed to minimize the total source and relay transmit power such that a minimum signal-to-interference-plus-noise ratio (SINR) threshold is maintained at each receiver. The proposed algorithm exploits the network beamforming technique at the relay nodes and the receive beamforming technique at the destination nodes to mitigate the interferences from the unintended sources in conjunction with transmit power control. In particular, we apply the semidefinite relaxation technique to transform the relay transmission power minimization problem into a semidefinite programming (SDP) problem which can be efficiently solved by interior point-based methods. Numerical simulations are performed to demonstrate the effectiveness of the proposed iterative algorithm.

Original languageEnglish
Title of host publication17th Asia Pacific Conference on Communications
Number of pages6
ISBN (Electronic)9781457703904
ISBN (Print)9781457703898
Publication statusPublished - 16 Feb 2012
Event17th Asia Pacific Conference on Communications 2011 - Kota Kinabalu, Sabah, Malaysia
Duration: 2 Oct 20115 Oct 2011


Conference17th Asia Pacific Conference on Communications 2011
Abbreviated titleAPCC 2011
CityKota Kinabalu, Sabah

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Communication


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