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Mobile Networks and Applications

, Volume 17, Issue 5, pp 685–694 | Cite as

Energy Conservation via Antenna Scheduling in Fiber-Connected Femto Base Stations

  • Haoming LiEmail author
  • Alireza Attar
  • Victor C. M. Leung
Article

Abstract

We formulated the energy consumption of previously proposed broadband wireless access with fibre-connected massively distributed antennas (BWA-FMDA) architecture under a generalized framework and developed an optimization tool in a femtocell cluster based on coordinated multipoint transmission (femto-CoMP) to maximize energy efficiency by adjusting the number of transmission antennas and controlling transmission power in zero-forcing beamforming. Based on the analysis results, we group every two neighboring antennas in multiple femto-CoMP configurations and proposed a new network configuration scheme that uses antenna scheduling to simultaneously improve spectral and energy efficiency. Compared with standalone femtocells, the proposed scheme is shown in a typical office building to increase energy efficiency by 64 % ~ 160 % and spectral efficiency by 2 % ~ 36 %. Compared with our previous BWA-FMDA configurations, the new scheme is able to improve energy efficiency by 6 % ~ 68 % and spectral efficiency by 15 % ~ 55 %. The exact gain depends on network configurations and transmission power levels.

Keywords

femtocell CoMP radio over fiber 

Abbreviations

CoMP

coordinated multipoint transmission

RoF

radio over fiber

Femto-CoMP

femtocell cluster based on coordinated multipoint transmission

Notes

Acknowledgements

This work was supported in part by the Canadian Natural Sciences and Engineering Research Council through grant STPGP 396756, and a UBC Postgraduate Scholarship. The authors wish to thank the anonymous reviewers for their constructive comments that have greatly improved this work.

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Copyright information

© Springer Science+Business Media, LLC 2012

Authors and Affiliations

  • Haoming Li
    • 1
    Email author
  • Alireza Attar
    • 1
  • Victor C. M. Leung
    • 1
  1. 1.Department of Electrical and Computer EngineeringThe University of British ColumbiaVancouverCanada

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