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  • Research Article
  • Open Access

Capacity Performance of Adaptive Receive Antenna Subarray Formation for MIMO Systems

EURASIP Journal on Wireless Communications and Networking20072007:056471

  • Received: 15 November 2006
  • Accepted: 1 August 2007
  • Published:


Antenna subarray formation is a novel RF preprocessing technique that reduces the hardware complexity of MIMO systems while alleviating the performance degradations of conventional antenna selection schemes. With this method, each RF chain is not allocated to a single antenna element, but instead to the complex-weighted and combined response of a subarray of elements. In this paper, we derive tight upper bounds on the ergodic capacity of the proposed technique for Rayleigh i.i.d. channels. Furthermore, we study the capacity performance of an analytical algorithm based on a Frobenius norm criterion when applied to both Rayleigh i.i.d. and measured MIMO channels.


  • Performance Degradation
  • MIMO System
  • Frobenius Norm
  • Antenna Element
  • Capacity Performance


Authors’ Affiliations

Wireless Communications Laboratory, Department of Technology Education and Digital Systems, University of Piraeus, 80 Karaoli & Dimitriou Street, Piraeus, 18534, Greece


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© P. Theofilakos and A. G. Kanatas 2007

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.