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Model for energy efficiency in radio over fiber distributed indoor antenna Wi-Fi network

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3 Author(s)
Yves Josse ; Télécom Bretagne - Dépt Optique, Technople Brest-Iroise - CS 83818, 29238 CEDEX 3 (FRANCE) ; Bruno Fracasso ; Patrice Pajusco

Distributed antenna systems (DAS) are known to improve coverage and performance of wireless communications in indoor environments. In this paper, the power consumption and energy efficiency of a DAS using radio over fiber (RoF) are evaluated and compared with those in a centralized antenna system. The instantaneous power consumption curves of a Wi-Fi access point and dongle combination are physically measured for different transmission configurations, yielding a distance-dependent energy efficiency model. In a second step, computer simulations show that a distributed system with four antennas is 3.8 times more energy-efficient than a centralized antenna system, while the total radiated power is divided by a factor of two.

Published in:

Wireless Personal Multimedia Communications (WPMC), 2011 14th International Symposium on

Date of Conference:

3-7 Oct. 2011