Chirp-based multicarrier modulation

Research output: Contribution to conferencePaper

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.

Conference

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

Fingerprint

Multicarrier modulation
Orthogonal frequency division multiplexing
Fourier transforms
Equalizers

Keywords

  • chirp-based
  • multicarrier modulation

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.
Solyman, Ahmed ; Weiss, Stephan ; Soraghan, John. / Chirp-based multicarrier modulation. Paper presented at 9th IMA International Conference on Mathematics in Signal Processing , Birmingham, United Kingdom.4 p.
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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.",
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author = "Ahmed Solyman and Stephan Weiss and John Soraghan",
year = "2012",
month = "12",
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note = "9th IMA International Conference on Mathematics in Signal Processing ; Conference date: 17-12-2012 Through 20-12-2012",

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Solyman, A, Weiss, S & Soraghan, J 2012, 'Chirp-based multicarrier modulation' Paper presented at 9th IMA International Conference on Mathematics in Signal Processing , Birmingham, United Kingdom, 17/12/12 - 20/12/12, pp. 1-4.

Chirp-based multicarrier modulation. / Solyman, Ahmed; Weiss, Stephan; Soraghan, John.

2012. 1-4 Paper presented at 9th IMA International Conference on Mathematics in Signal Processing , Birmingham, United Kingdom.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Chirp-based multicarrier modulation

AU - Solyman, Ahmed

AU - Weiss, Stephan

AU - Soraghan, John

PY - 2012/12/17

Y1 - 2012/12/17

N2 - 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.

AB - 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.

KW - chirp-based

KW - multicarrier modulation

M3 - Paper

SP - 1

EP - 4

ER -

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