Collaborative relay beamforming for secrecy

Junwei Zhang, Mustafa Cenk Gursoy

Research output: Chapter in Book/Entry/PoemConference contribution

81 Scopus citations


In this paper, collaborative use of relays to form a beamforming system with the aid of perfect channel state information (CSI) and to provide physical-layer security is investigated. In particular, a decode-and-forward- based relay beamforming design subject to total and individual relay power constraints is studied with the goal of maximizing the secrecy rate. The total power constraint leads to a closed-form solution. The design under individual relay power constraints is formulated as an optimization problem which is shown to be easily solved using two different approaches, namely semidefinite programming and second-order cone programming. Furthermore, a simplified and suboptimal technique which reduces the computation complexity under individual power constraints is presented.

Original languageEnglish (US)
Title of host publication2010 IEEE International Conference on Communications, ICC 2010
StatePublished - 2010
Externally publishedYes
Event2010 IEEE International Conference on Communications, ICC 2010 - Cape Town, South Africa
Duration: May 23 2010May 27 2010

Publication series

NameIEEE International Conference on Communications
ISSN (Print)0536-1486


Other2010 IEEE International Conference on Communications, ICC 2010
Country/TerritorySouth Africa
CityCape Town

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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