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Multi-Cell MIMO Cooperative Networks: A New Look at Interference

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6 Author(s)
Gesbert, D. ; EURECOM, Sophia Antipolis, France ; Hanly, S. ; Huang, H. ; Shamai Shitz, S.
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This paper presents an overview of the theory and currently known techniques for multi-cell MIMO (multiple input multiple output) cooperation in wireless networks. In dense networks where interference emerges as the key capacity-limiting factor, multi-cell cooperation can dramatically improve the system performance. Remarkably, such techniques literally exploit inter-cell interference by allowing the user data to be jointly processed by several interfering base stations, thus mimicking the benefits of a large virtual MIMO array. Multi-cell MIMO cooperation concepts are examined from different perspectives, including an examination of the fundamental information-theoretic limits, a review of the coding and signal processing algorithmic developments, and, going beyond that, consideration of very practical issues related to scalability and system-level integration. A few promising and quite fundamental research avenues are also suggested.

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Selected Areas in Communications, IEEE Journal on  (Volume:28 ,  Issue: 9 )