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Effective capacity of multiple antenna channels: correlation and keyhole

Effective capacity of multiple antenna channels: correlation and keyhole

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  • Author(s): C. Zhong 1 ; T. Ratnarajah 2 ; K.-K. Wong 3 ; M.-S. Alouini 4
    • View affiliations
    • Affiliations: 1: Institute of Information and Communication Engineering, Zhejiang University, Hangzhou, People's Republic of China
      2: The Institute of Electronics, Communications and Information Technology, Queen's University Belfast, Belfast, UK
      3: Department of Electronic and Electrical Engineering, University College London, London, UK
      4: Electrical Engineering, King Abdullah University of Science and Technology, Saudi Arabia
  • Source: Volume 6, Issue 12, 14 August 2012, p. 1757 – 1768
    DOI:  10.1049/iet-com.2011.0450 , Print ISSN 1751-8628, Online ISSN 1751-8636
© The Institution of Engineering and Technology
Published

In this study, the authors derive the effective capacity limits for multiple antenna channels which quantify the maximum achievable rate with consideration of link-layer delay-bound violation probability. Both correlated multiple-input single-output and multiple-input multiple-output keyhole channels are studied. Based on the closed-form exact expressions for the effective capacity of both channels, the authors look into the asymptotic high and low signal-to-noise ratio regimes, and derive simple expressions to gain more insights. The impact of spatial correlation on effective capacity is also characterised with the aid of a majorisation theory result. It is revealed that antenna correlation reduces the effective capacity of the channels and a stringent quality-of-service requirement causes a severe reduction in the effective capacity but can be alleviated by increasing the number of antennas.

Inspec keywords: channel capacity; wireless channels; antenna arrays; MIMO communication

Other keywords: multiple-input single-output and multiple-input multiple-output keyhole channels; multiple antenna channels capacity; closed-form exact expressions; spatial correlation; link-layer delay-bound violation probability; stringent quality-of-service requirement; signal-to-noise ratio regimes

Subjects: Radio links and equipment; Antenna arrays

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