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A Comparison of Double Convex and Double Concave Improved Nyquist FiltersALEXANDRU, N. D. , ALEXANDRU, M. L.
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error probability, filters, Fourier transforms, pulse generation, transient response
nyquist(10), pulses(9), pulse(8), free(5), filters(5), communications(5), beaulieu(5), alexandru(5), transmission(4), shaping(4)
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About this article
Date of Publication: 2010-02-27
Volume 10, Issue 1, Year 2010, On page(s): 63 - 66
ISSN: 1582-7445, e-ISSN: 1844-7600
Digital Object Identifier: 10.4316/AECE.2010.01011
Web of Science Accession Number: 000275458900011
SCOPUS ID: 77954680578
This paper presents a comparative analysis of two families of improved Nyquist filters with a piece-wise parabolic frequency characteristic. Their construction is based on a novel approach and produces ISI-free pulses that shows comparable or better ISI performance in the presence of sampling errors, as compared with some recently proposed pulses. The coordinates of the junction points that delimit the parabolic pieces were determined in order to produce a minimal value of the error probability when the impulse response is sampled with a fixed time offset that accounts for the imperfect synchronization in the receiver. With a minor exception both families outperform the poly filter, so far considered the best one.
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 Improved Nyquist Pulses Produced By A Filter with Senary Piece-wise Polynomial Frequency Characteristic, BALAN, A. L., ALEXANDRU, N. D., Advances in Electrical and Computer Engineering, ISSN 1582-7445, Issue 2, Volume 14, 2014.
Digital Object Identifier: 10.4316/AECE.2014.02021 [CrossRef] [Full text]
 Improved Nyquist Filters with Piece-Wise Parabolic Frequency Characteristics, Alexandru, Nicolae Dumitru, Balan, Alexandra Ligia Onofrei, IEEE Communications Letters, ISSN 1089-7798, Issue 5, Volume 15, 2011.
Digital Object Identifier: 10.1109/LCOMM.2011.030911.102065 [CrossRef]
 Two improved nyquist filters with piece-wise rectangular-polynomial frequency characteristics, Balan, Alexandra Ligia, Alexandru, Nicolae Dumitru, AEU - International Journal of Electronics and Communications, ISSN 1434-8411, Issue 11, Volume 66, 2012.
Digital Object Identifier: 10.1016/j.aeue.2012.03.006 [CrossRef]
 Square-root improved Nyquist filter with a piecewise rectangular frequency characteristic, Alexandru, Nicolae Dumitru, Balan, Alexandra Ligia, Diaconu, Felix, International Symposium on Signals, Circuits and Systems ISSCS2013, ISBN 978-1-4673-6143-9, 2013.
Digital Object Identifier: 10.1109/ISSCS.2013.6651180 [CrossRef]
 Thorough spectral investigation of the β-α pulse shaping filter, Alexandru, N. D., Diaconu, F., 2015 International Symposium on Signals, Circuits and Systems (ISSCS), ISBN 978-1-4673-7488-0, 2015.
Digital Object Identifier: 10.1109/ISSCS.2015.7203952 [CrossRef]
 Improved Nyquist Filters with piecewise rectangular-sine frequency characteristics, Balan, Alexandra Ligia, Alexandru, Nicolae Dumitru, 2012 9th International Conference on Communications (COMM), ISBN 978-1-4577-0058-3, 2012.
Digital Object Identifier: 10.1109/ICComm.2012.6262550 [CrossRef]
 Construction of the new improved Nyquist filters using interpolation with polynomial functions, Balan, Alexandra Ligia, Alexandru, Nicolae Dumitru, ISSCS 2011 - International Symposium on Signals, Circuits and Systems, ISBN 978-1-61284-944-7, 2011.
Digital Object Identifier: 10.1109/ISSCS.2011.5978709 [CrossRef]
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Faculty of Electrical Engineering and Computer Science
Stefan cel Mare University of Suceava, Romania
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