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A potential transmitter architecture for future generation green wireless base station

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Author

  • Vandana Bassoo
  • Kevin Tom
  • A.K. Mustafa
  • Pieternella Cijvat
  • Henrik Sjöland
  • Mike Faulkner

Summary, in English

Current radio frequency power amplifiers 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. The all-digital transmitter architecture uses a combination of envelope elimination and restoration (EER) and pulse width modulation(PWM)/ pulse position modulation (PPM). The performance of this architecture is predicted from the measured output power and efficiency curves of a GaN amplifier. 57% efficiency is obtained for an OFDM signal limited to 8dB peak to average power ratio. The PWM/PPM drive signal is generated using the improved Cartesian sigma delta techniques. It is shown that an RF oversampling by a factor of four meets the WLAN spectral mask and WCDMA specification is met by an RF oversampling of sixteen.

Publishing year

2009

Language

English

Publication/Series

Eurasip Journal on Wireless Communications and Networking

Issue

doi:10.1155/2009/821846

Document type

Journal article

Publisher

Hindawi Limited

Topic

  • Electrical Engineering, Electronic Engineering, Information Engineering

Keywords

  • power consumption
  • transmitter
  • modulation
  • base station

Status

Published

Research group

  • Analog RF

ISBN/ISSN/Other

  • ISSN: 1687-1472