Potential architecture for future generation 'green' wireless base station

  • Authors:

  • V. Bassoo;K. Tom;A. K. Mustafa;E. Cijvat;H. Sjöland;M. Faulkner

  • Affiliations:

  • Centre for Telecommunications and Micro-Electronics, Victoria University, Australia;Centre for Telecommunications and Micro-Electronics, Victoria University, Australia;Centre for Telecommunications and Micro-Electronics, Victoria University, Australia;Dept. of Electrical and Information Technology, Lund University, Sweden;Dept. of Electrical and Information Technology, Lund University, Sweden;Centre for Telecommunications and Micro-Electronics, Victoria University, Australia

  • Venue:
  • ISWPC'09 Proceedings of the 4th international conference on Wireless pervasive computing
  • Year:
  • 2009

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Abstract

Current radio frequency power amplifiers (PAs) in 3G base stations have very high power consumption leading to a hefty cost and negative environmental impact. In this paper, we propose a potential architecture design for future wireless base station. Issues associated with components of the architecture are investigated. A comparison of PA with pulse width modulation drive and PA with envelope elimination and restoration (EER) drive is offered. EER-driven PA promises high efficiency over a wide dynamic range but has bandwidth expansion problems. A novel approach which reduces bandwidth expansion on the envelope by 54% is proposed. A modulator is used to convert amplitude and phase information into the edges of a pulse train. The modulator also eradicates some analog components present in traditional base station design.