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

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.

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Correspondence to Ari Viholainen.

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Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License (https://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Viholainen, A., Ihalainen, T., Rinne, M. et al. Localized Mode DFT-S-OFDMA Implementation Using Frequency and Time Domain Interpolation. EURASIP J. Adv. Signal Process. 2009, 750534 (2009). https://doi.org/10.1155/2009/750534

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

Keywords

  • Information Technology
  • Computational Complexity
  • Frequency Shift
  • Quantum Information
  • Mobile Communication