Sum-rate improved interference alignment for the M × 2 MIMO X channel

Younggap Kwon, Taewon Hwang

Research output: Contribution to journalArticle

2 Citations (Scopus)


In this letter, we propose an improved interference alignment (IA) scheme for the M × 2 constant multiple-input multiple-output (MIMO) X channel composed of M transmitters and two receivers with multiple antennas each. The proposed IA scheme enhances the sum rate as well as achieving the DOF outerbound. To enhance the sum rate, the proposed scheme designs the transmit beamformers that make the desired signal space and the interference space as close to orthogonal as possible. Simulation results show that the proposed IA scheme achieves similar sum rate as the random search scheme but with less computational complexity.

Original languageEnglish
Article number6200379
Pages (from-to)1088-1091
Number of pages4
JournalIEEE Communications Letters
Issue number7
Publication statusPublished - 2012 May 22

All Science Journal Classification (ASJC) codes

  • Modelling and Simulation
  • Computer Science Applications
  • Electrical and Electronic Engineering

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