Chirp-based multicarrier modulation

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Abstract

In this paper we demonstrate that in doubly-dispersive environments, a multicarrier (MC) system based on a fractional Fourier transform (FrFT) can achieve a better concentration of power near the main diagonal of the equivalent channel matrix compared to standard orthogonal frequency division multiplexing (OFDM). The resulting inter-symbol and inter-carrier interference in such a chirp- based MC system can therefore be suppressed with a reduced complexity equaliser. Simulations show that compared to an equalised OFDM system, the equalised FrFT-MC approach can either significantly reduce complexity or enhance performance in a time-varying environment.
Original languageEnglish
Pages1-4
Number of pages4
Publication statusPublished - 17 Dec 2012
Event9th IMA International Conference on Mathematics in Signal Processing - Birmingham, United Kingdom
Duration: 17 Dec 201220 Dec 2012

Conference

Conference9th IMA International Conference on Mathematics in Signal Processing
CountryUnited Kingdom
CityBirmingham
Period17/12/1220/12/12

Keywords

  • chirp-based
  • multicarrier modulation

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  • Cite this

    Solyman, A., Weiss, S., & Soraghan, J. (2012). Chirp-based multicarrier modulation. 1-4. Paper presented at 9th IMA International Conference on Mathematics in Signal Processing , Birmingham, United Kingdom.