Real Interference Alignment and Degrees of Freedom Region of Wireless X Networks

Zhengdao Wang

Real Interference Alignment and Degrees of Freedom Region of Wireless X Networks

Information Theory 2011-09-15 v1 math.IT

Authors: Zhengdao Wang

Abstract

We consider a single hop wireless X network with $K$ transmitters and $J$ receivers, all with single antenna. Each transmitter conveys for each receiver an independent message. The channel is assumed to have constant coefficients. We develop interference alignment scheme for this setup and derived several achievable degrees of freedom regions. We show that in some cases, the derived region meets a previous outer bound and are hence the DoF region. For our achievability schemes, we divide each message into streams and use real interference alignment on the streams. Several previous results on the DoF region and total DoF for various special cases can be recovered from our result.

Keywords

interference alignment wireless X networks degrees of freedom real interference alignment achievable regions outer bounds multi-user communication

Cite

@article{arxiv.1109.2944,
  title  = {Real Interference Alignment and Degrees of Freedom Region of Wireless X Networks},
  author = {Zhengdao Wang},
  journal= {arXiv preprint arXiv:1109.2944},
  year   = {2011}
}

Comments

5 pages, 2 figures

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