Low-complexity LSMR equalisation of FrFT-based multicarrier systems in doubly dispersive channels

Ahmed A. A. Solyman; Stephan Weiss; John J. Soraghan

doi:10.1109/ISSPIT.2011.6151606

Low-complexity LSMR equalisation of FrFT-based multicarrier systems in doubly dispersive channels

Ahmed A. A. Solyman, Stephan Weiss, John J. Soraghan

Electronic And Electrical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

15 Citations (Scopus)

Abstract

The discrete fractional Fourier transform (FrFT) has been suggested to enhance performance over DFT-based multicarrier systems when transmitting over doubly-dispersive channels. In this paper, we propose a novel low-complexity equaliser for inter-symbol and inter-carrier interference arising in such multicarrier transmission system. Due to a lower spreading in the FrFT-domain compared to the DFTchannel matrix as compared to the DFT domain, the equaliser cam approximate the fractional-domain channel matrix by a band matrix. Further, we utilise the least squares minres (LSMR) algorithm in the calculation of the equalisation, which exhibits attractive numerical properties and low complexity. Simulation results demonstrate the superior performance of the proposed LSMR equaliser over benchmark schemes.

Original language	English
Title of host publication	IEEE International Symposium on Signal Processing and Information Technology (ISSPIT), 2011
Place of Publication	New York
Publisher	IEEE
Pages	461-465
Number of pages	5
ISBN (Print)	9781467307529
DOIs	https://doi.org/10.1109/ISSPIT.2011.6151606
Publication status	Published - 17 Dec 2011
Event	11th IEEE International Symposium on Signal Processing and Information Technology - Bilbao, Spain Duration: 14 Dec 2011 → 17 Dec 2011

Conference

Conference	11th IEEE International Symposium on Signal Processing and Information Technology
Country/Territory	Spain
City	Bilbao
Period	14/12/11 → 17/12/11

Keywords

LSMR equalisation
FrFT-based multicarrier systems
signal processing
OFDM
complexity theory
discrete Fourier transforms
multicarrier transmission
fractional Fourier transformation
doubly dispersive channel
low complexity equalisation

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10.1109/ISSPIT.2011.6151606

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@inproceedings{360c8dafb61c463b927d194ebe25ab16,

title = "Low-complexity LSMR equalisation of FrFT-based multicarrier systems in doubly dispersive channels",

abstract = "The discrete fractional Fourier transform (FrFT) has been suggested to enhance performance over DFT-based multicarrier systems when transmitting over doubly-dispersive channels. In this paper, we propose a novel low-complexity equaliser for inter-symbol and inter-carrier interference arising in such multicarrier transmission system. Due to a lower spreading in the FrFT-domain compared to the DFTchannel matrix as compared to the DFT domain, the equaliser cam approximate the fractional-domain channel matrix by a band matrix. Further, we utilise the least squares minres (LSMR) algorithm in the calculation of the equalisation, which exhibits attractive numerical properties and low complexity. Simulation results demonstrate the superior performance of the proposed LSMR equaliser over benchmark schemes.",

keywords = "LSMR equalisation , FrFT-based multicarrier systems, signal processing, OFDM, complexity theory, discrete Fourier transforms, multicarrier transmission, fractional Fourier transformation, doubly dispersive channel, low complexity equalisation",

author = "Solyman, {Ahmed A. A.} and Stephan Weiss and Soraghan, {John J.}",

year = "2011",

month = dec,

day = "17",

doi = "10.1109/ISSPIT.2011.6151606",

language = "English",

isbn = "9781467307529",

pages = "461--465",

booktitle = "IEEE International Symposium on Signal Processing and Information Technology (ISSPIT), 2011",

publisher = "IEEE",

note = "11th IEEE International Symposium on Signal Processing and Information Technology ; Conference date: 14-12-2011 Through 17-12-2011",

}

Solyman, AAA, Weiss, S & Soraghan, JJ 2011, Low-complexity LSMR equalisation of FrFT-based multicarrier systems in doubly dispersive channels. in IEEE International Symposium on Signal Processing and Information Technology (ISSPIT), 2011 . IEEE, New York, pp. 461-465, 11th IEEE International Symposium on Signal Processing and Information Technology, Bilbao, Spain, 14/12/11. https://doi.org/10.1109/ISSPIT.2011.6151606

Low-complexity LSMR equalisation of FrFT-based multicarrier systems in doubly dispersive channels. / Solyman, Ahmed A. A.; Weiss, Stephan ; Soraghan, John J.
IEEE International Symposium on Signal Processing and Information Technology (ISSPIT), 2011 . New York: IEEE, 2011. p. 461-465.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

TY - GEN

T1 - Low-complexity LSMR equalisation of FrFT-based multicarrier systems in doubly dispersive channels

AU - Solyman, Ahmed A. A.

AU - Weiss, Stephan

AU - Soraghan, John J.

PY - 2011/12/17

Y1 - 2011/12/17

N2 - The discrete fractional Fourier transform (FrFT) has been suggested to enhance performance over DFT-based multicarrier systems when transmitting over doubly-dispersive channels. In this paper, we propose a novel low-complexity equaliser for inter-symbol and inter-carrier interference arising in such multicarrier transmission system. Due to a lower spreading in the FrFT-domain compared to the DFTchannel matrix as compared to the DFT domain, the equaliser cam approximate the fractional-domain channel matrix by a band matrix. Further, we utilise the least squares minres (LSMR) algorithm in the calculation of the equalisation, which exhibits attractive numerical properties and low complexity. Simulation results demonstrate the superior performance of the proposed LSMR equaliser over benchmark schemes.

AB - The discrete fractional Fourier transform (FrFT) has been suggested to enhance performance over DFT-based multicarrier systems when transmitting over doubly-dispersive channels. In this paper, we propose a novel low-complexity equaliser for inter-symbol and inter-carrier interference arising in such multicarrier transmission system. Due to a lower spreading in the FrFT-domain compared to the DFTchannel matrix as compared to the DFT domain, the equaliser cam approximate the fractional-domain channel matrix by a band matrix. Further, we utilise the least squares minres (LSMR) algorithm in the calculation of the equalisation, which exhibits attractive numerical properties and low complexity. Simulation results demonstrate the superior performance of the proposed LSMR equaliser over benchmark schemes.

KW - LSMR equalisation

KW - FrFT-based multicarrier systems

KW - signal processing

KW - OFDM

KW - complexity theory

KW - discrete Fourier transforms

KW - multicarrier transmission

KW - fractional Fourier transformation

KW - doubly dispersive channel

KW - low complexity equalisation

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BT - IEEE International Symposium on Signal Processing and Information Technology (ISSPIT), 2011

PB - IEEE

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T2 - 11th IEEE International Symposium on Signal Processing and Information Technology

Y2 - 14 December 2011 through 17 December 2011

ER -

Low-complexity LSMR equalisation of FrFT-based multicarrier systems in doubly dispersive channels

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