Feasibility conditions of signal space alignment for network coding on K-user MIMO Y channels

Kwangwon Lee, Namyoon Lee, Inkyu Lee

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

20 Citations (Scopus)

Abstract

In this paper, we consider K-user MIMO Y channels where K users simultaneously exchange messages with each other via an intermediate relay. Degrees of freedom (DOF) of this channel are not known in general. The investigation of the feasibility conditions of signal space alignment for network coding is an initial step for addressing this open problem. We verify that when user i has Mi antennas (i=1, ..., K) and a relay has N antennas, the DOF of K(K-1) is achieved if Mi ≥ K-1, N ≥ K(K-1)/2 and N < min {Mi+Mj|∀ i ≠ j}. It is accomplished by adopting the signal space alignment for network coding during both multiple access channel and broadcasting channel phase. The achievability is shown by an amplify-and-forward (AF) relaying strategy combined with the signal space alignment for the network coding scheme, which provides a lower bound of the capacity.

Original languageEnglish
Title of host publicationIEEE International Conference on Communications
DOIs
Publication statusPublished - 2011 Sep 2
Event2011 IEEE International Conference on Communications, ICC 2011 - Kyoto, Japan
Duration: 2011 Jun 52011 Jun 9

Other

Other2011 IEEE International Conference on Communications, ICC 2011
CountryJapan
CityKyoto
Period11/6/511/6/9

Fingerprint

Network coding
MIMO systems
Antennas
Broadcasting

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Networks and Communications

Cite this

Feasibility conditions of signal space alignment for network coding on K-user MIMO Y channels. / Lee, Kwangwon; Lee, Namyoon; Lee, Inkyu.

IEEE International Conference on Communications. 2011. 5963120.

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

Lee, K, Lee, N & Lee, I 2011, Feasibility conditions of signal space alignment for network coding on K-user MIMO Y channels. in IEEE International Conference on Communications., 5963120, 2011 IEEE International Conference on Communications, ICC 2011, Kyoto, Japan, 11/6/5. https://doi.org/10.1109/icc.2011.5963120
Lee, Kwangwon ; Lee, Namyoon ; Lee, Inkyu. / Feasibility conditions of signal space alignment for network coding on K-user MIMO Y channels. IEEE International Conference on Communications. 2011.
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