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Open Access

Localized Mode DFT-S-OFDMA Implementation Using Frequency and Time Domain Interpolation

  • Ari Viholainen1Email author,
  • Tero Ihalainen1,
  • Mika Rinne2 and
  • Markku Renfors1
EURASIP Journal on Advances in Signal Processing20092009:750534

https://doi.org/10.1155/2009/750534

Received: 3 September 2008

Accepted: 12 March 2009

Published: 5 April 2009

Abstract

This paper presents a novel method to generate a localized mode single-carrier frequency division multiple access (SC-FDMA) waveform. Instead of using DFT-spread OFDMA (DFT-S-OFDMA) processing, the new structure called SCiFI-FDMA relies on frequency and time domain interpolation followed by a user-specific frequency shift. SCiFI-FDMA can provide signal waveforms that are compatible to DFT-S-OFDMA. In addition, it provides any resolution of user bandwidth allocation for the uplink multiple access with comparable computational complexity, because the DFT is avoided. Therefore, SCiFI-FDMA allows a flexible choice of parameters appreciated in broadband mobile communications in the future.

Keywords

Information TechnologyComputational ComplexityFrequency ShiftQuantum InformationMobile Communication

Publisher note

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Authors’ Affiliations

(1)
Department of Communications Engineering, Tampere University of Technology, Tampere, Finland
(2)
Nokia Research Center, Helsinki, Finland

Copyright

© Ari Viholainen et al. 2009

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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