Interference alignment in the 2 x (1 + N) MIMO model

Mitsuki Yamada, Tomoaki Ohtsuki

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

6 Citations (Scopus)


In modern cellular systems, base station cooperation multiple-input multiple-output (MIMO) in which multiple base stations transmit desired signals to one user is anticipated to alleviate interference at the cell-edge. Cell-edge user is influenced a great deal by interference between different base stations. Inter-cell interference degrades system performance substantially. An interference alignment (IA) scheme was proposed recently to eliminate inter-cell interference. It aligns interference into a smaller-dimensional subspace to eliminate interference. In this paper, we clarify how to apply IA to the 2 base stations (BSs) x (1 + N) mobile stations (MSs), 2 ≤ N < ∞, MIMO model, where one MS, referred to as Cooperated Mobile Station (CMS), is transmitted with two BSs simultaneously, and others, referred to as non cooperated mobile stations (NMSs), are transmitted with one BS. We show that IA is effective to reduce interference at CMS, while achieving the higher capacity than the conventional one through computer simulation.

Original languageEnglish
Title of host publication2010 IEEE Globecom Workshops, GC'10
PublisherIEEE Computer Society
Number of pages5
ISBN (Print)9781424488650
Publication statusPublished - 2010
Event2010 IEEE Globecom Workshops, GC 2010 - Miami, United States
Duration: 2010 Dec 52010 Dec 10

Publication series

Name2010 IEEE Globecom Workshops, GC'10


Conference2010 IEEE Globecom Workshops, GC 2010
Country/TerritoryUnited States


  • Interference alignment
  • MIMO

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Communication


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