Coordinated adaptive beamformer over distributed antenna network

Desheng Liu, Songtao Lu, Jinping Sun, Jun Wang

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The spatial diversity of distributed network demands the individual filter to accommodate the topology of interference environment. In this paper, a type of distributed adaptive beamformer is proposed to mitigate interference over coordinated antenna arrays network. The proposed approach is formulated as generalized sidelobe canceller (GSC) structure to facilitate the convex combination of neighboring nodes' weights, and then it is solved by unconstrained least mean square (LMS) algorithm due to simplicity. Numerical results show that the robustness and convergence rate of antenna arrays network can be significantly improved in strong interference scenario. And they also clearly illustrate that mixing vector is optimized adaptively and adjusted according to the spatial diversity of the distributed nodes which are placed in different power of received signals to interference ratio (SIR) environments.

Original languageEnglish (US)
Pages (from-to)357-362
Number of pages6
JournalChinese Journal of Aeronautics
Volume26
Issue number2
DOIs
StatePublished - Apr 2013

Bibliographical note

Funding Information:
This study was supported by National Basic Research Program of China ( No. 2010CB731903 ).

Keywords

  • Adaptive algorithm
  • Antenna array
  • Distributed network
  • Energy efficient network
  • Generalized sidelobe canceller
  • Least mean square filter

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