Low-Complexity Distributed Multibase Transmission and Scheduling

Open Access
Research Article
Part of the following topical collections:
  1. Distributed Space-Time Systems

Abstract

This paper addresses the problem of base station coordination and cooperation in wireless networks with multiple base stations. We present a distributed approach to downlink multibase beamforming, which allows for the multiplexing of Open image in new window user terminals, randomly located in a network with Open image in new window base stations. In particular, we detail a low-complexity scheduling algorithm, which can be employed with different objective functions, exemplified here by two approaches: (1) maximizing the sum rate of the network; and (2) maximizing the number of users served, given a statistical constraint on the received rate per user. The optimizations are based on locally available information at each base station. Results show that our approaches yield significant gains, when compared to schemes that do not allow cooperation between cells. These gains are obtained without the extensive signaling overhead required in previously known multicell MIMO processing.

Keywords

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Copyright information

© Hilde Skjevling et al. 2008

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Authors and Affiliations

  • Hilde Skjevling
    • 1
  • David Gesbert
    • 2
  • Are Hjørungnes
    • 3
  1. 1.Department of InformaticsUniversity of OsloBlindernNorway
  2. 2.Mobile Communications DepartmentEurécom InstituteSophia Antipolis CédexFrance
  3. 3.UNIK-University Graduate CenterUniversity of OsloInstituttveien 252027KjellerNorway

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