Energy efficiency of transmit diversity systems under a realistic power consumption model

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Kakitani, M.T. ; Brante, G. ; Souza, R.D. ; Imran, M.A. (2013)
  • Publisher: IEEE
  • Related identifiers: doi: 10.1109/LCOMM.2012.112812.122253
  • Subject:
    arxiv: Computer Science::Information Theory

We compare the downlink energy efficiency of spatial diversity multiple transmit antenna schemes. We determine the minimum required transmit power for a given outage probability. Our analysis shows that antenna selection is in general the most energy efficient option as it requires a single radio-frequency chain. We also investigate the limiting distances up to which the antenna selection technique outperforms the transmit beamforming scheme for different numbers of transmit antennas.
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