On the beamforming design for MIMO multipair two-way relay channels

Hyunjo Chung, Namyoon Lee, Byonghyo Shim, Taewon Oh

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


In this paper, we propose a simple yet effective beamforming technique for multiple-input-multiple-output (MIMO) multipair two-way relay channels. Two key ingredients in our technique are adoption of signal space alignment (SSA) for transmit and receive beamforming and amplify-and-forward (AF) relay beamforming using advanced zero-forcing (ZF) technique. From the sum-rate analysis on MIMO multipair two-way relay channels, we show that the proposed method achieves multiplexing gain proportional to the number of user pairs.

Original languageEnglish
Article number6213571
Pages (from-to)3301-3306
Number of pages6
JournalIEEE Transactions on Vehicular Technology
Issue number7
Publication statusPublished - 2012

Bibliographical note

Funding Information:
Manuscript received November 29, 2011; revised April 15, 2012; accepted May 29, 2012. Date of publication June 8, 2012; date of current version September 11, 2012. This work was supported by the Basic Science Research Program through the National Research Foundation funded by the Ministry of Education, Science and Technology under Grant 2011-0012525 and second Brain Korea 21 project. This paper was presented in part by the IEEE International Conference on Communications 2012. The review of this paper was coordinated by Dr. S. Sun.


  • Relay beamforming
  • signal space alignment (SSA)
  • sum-rate maximization
  • two-way relay channels

ASJC Scopus subject areas

  • Automotive Engineering
  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Applied Mathematics


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