A Novel Low Complexity Faster-than-Nyquist (FTN) Signaling Detector for Ultra High-Order QAM

Faster-than-Nyquist (FTN) signaling is a promising non-orthogonal pulse modulation technique that can improve the spectral efficiency (SE) of next generation communication systems at the expense of higher detection complexity to remove the introduced inter-symbol interference (ISI). In this paper, w...

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Autores principales:	Ahmed Ibrahim, Ebrahim Bedeer, Halim Yanikomeroglu
Formato:	article
Lenguaje:	EN
Publicado:	IEEE 2021
Materias:	ADMM faster-than-Nyquist (FTN) signaling intersymbol interference (ISI) sequence estimation ultra high-order QAM Telecommunication TK5101-6720 Transportation and communications HE1-9990
Acceso en línea:	https://doaj.org/article/b22492c78f8748f1aefe2cd7507476e4
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spelling	oai:doaj.org-article:b22492c78f8748f1aefe2cd7507476e42021-12-02T00:00:57ZA Novel Low Complexity Faster-than-Nyquist (FTN) Signaling Detector for Ultra High-Order QAM2644-125X10.1109/OJCOMS.2021.3126805https://doaj.org/article/b22492c78f8748f1aefe2cd7507476e42021-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/9610117/https://doaj.org/toc/2644-125XFaster-than-Nyquist (FTN) signaling is a promising non-orthogonal pulse modulation technique that can improve the spectral efficiency (SE) of next generation communication systems at the expense of higher detection complexity to remove the introduced inter-symbol interference (ISI). In this paper, we investigate the detection problem of ultra high-order quadrature-amplitude modulation (QAM) FTN signaling where we exploit a mathematical programming technique based on the alternating directions multiplier method (ADMM). The proposed ADMM sequence estimation (ADMMSE) FTN signaling detector demonstrates an excellent trade-off between performance and computational effort enabling successful detection and SE gains for QAM modulation orders as high as 64K (65,536). The complexity of the proposed ADMMSE detector is polynomial in the length of the transmit symbols sequence and its sensitivity to the modulation order increases only logarithmically. Simulation results show that for 16-QAM, the proposed ADMMSE FTN signaling detector achieves comparable SE gains to the generalized approach semidefinite relaxation-based sequence estimation (GASDRSE) FTN signaling detector, but at an experimentally evaluated much lower computational time. Simulation results additionally show SE gains for modulation orders starting from 4-QAM, or quadrature phase shift keying (QPSK), up to and including 64K-QAM when compared to conventional Nyquist signaling. The very low computational effort required makes the proposed ADMMSE detector a practically promising FTN signaling detector for both low order and ultra high-order QAM FTN signaling systems.Ahmed IbrahimEbrahim BedeerHalim YanikomerogluIEEEarticleADMMfaster-than-Nyquist (FTN) signalingintersymbol interference (ISI)sequence estimationultra high-order QAMTelecommunicationTK5101-6720Transportation and communicationsHE1-9990ENIEEE Open Journal of the Communications Society, Vol 2, Pp 2566-2580 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	ADMM faster-than-Nyquist (FTN) signaling intersymbol interference (ISI) sequence estimation ultra high-order QAM Telecommunication TK5101-6720 Transportation and communications HE1-9990
spellingShingle	ADMM faster-than-Nyquist (FTN) signaling intersymbol interference (ISI) sequence estimation ultra high-order QAM Telecommunication TK5101-6720 Transportation and communications HE1-9990 Ahmed Ibrahim Ebrahim Bedeer Halim Yanikomeroglu A Novel Low Complexity Faster-than-Nyquist (FTN) Signaling Detector for Ultra High-Order QAM
description	Faster-than-Nyquist (FTN) signaling is a promising non-orthogonal pulse modulation technique that can improve the spectral efficiency (SE) of next generation communication systems at the expense of higher detection complexity to remove the introduced inter-symbol interference (ISI). In this paper, we investigate the detection problem of ultra high-order quadrature-amplitude modulation (QAM) FTN signaling where we exploit a mathematical programming technique based on the alternating directions multiplier method (ADMM). The proposed ADMM sequence estimation (ADMMSE) FTN signaling detector demonstrates an excellent trade-off between performance and computational effort enabling successful detection and SE gains for QAM modulation orders as high as 64K (65,536). The complexity of the proposed ADMMSE detector is polynomial in the length of the transmit symbols sequence and its sensitivity to the modulation order increases only logarithmically. Simulation results show that for 16-QAM, the proposed ADMMSE FTN signaling detector achieves comparable SE gains to the generalized approach semidefinite relaxation-based sequence estimation (GASDRSE) FTN signaling detector, but at an experimentally evaluated much lower computational time. Simulation results additionally show SE gains for modulation orders starting from 4-QAM, or quadrature phase shift keying (QPSK), up to and including 64K-QAM when compared to conventional Nyquist signaling. The very low computational effort required makes the proposed ADMMSE detector a practically promising FTN signaling detector for both low order and ultra high-order QAM FTN signaling systems.
format	article
author	Ahmed Ibrahim Ebrahim Bedeer Halim Yanikomeroglu
author_facet	Ahmed Ibrahim Ebrahim Bedeer Halim Yanikomeroglu
author_sort	Ahmed Ibrahim
title	A Novel Low Complexity Faster-than-Nyquist (FTN) Signaling Detector for Ultra High-Order QAM
title_short	A Novel Low Complexity Faster-than-Nyquist (FTN) Signaling Detector for Ultra High-Order QAM
title_full	A Novel Low Complexity Faster-than-Nyquist (FTN) Signaling Detector for Ultra High-Order QAM
title_fullStr	A Novel Low Complexity Faster-than-Nyquist (FTN) Signaling Detector for Ultra High-Order QAM
title_full_unstemmed	A Novel Low Complexity Faster-than-Nyquist (FTN) Signaling Detector for Ultra High-Order QAM
title_sort	novel low complexity faster-than-nyquist (ftn) signaling detector for ultra high-order qam
publisher	IEEE
publishDate	2021
url	https://doaj.org/article/b22492c78f8748f1aefe2cd7507476e4
work_keys_str_mv	AT ahmedibrahim anovellowcomplexityfasterthannyquistftnsignalingdetectorforultrahighorderqam AT ebrahimbedeer anovellowcomplexityfasterthannyquistftnsignalingdetectorforultrahighorderqam AT halimyanikomeroglu anovellowcomplexityfasterthannyquistftnsignalingdetectorforultrahighorderqam AT ahmedibrahim novellowcomplexityfasterthannyquistftnsignalingdetectorforultrahighorderqam AT ebrahimbedeer novellowcomplexityfasterthannyquistftnsignalingdetectorforultrahighorderqam AT halimyanikomeroglu novellowcomplexityfasterthannyquistftnsignalingdetectorforultrahighorderqam
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A Novel Low Complexity Faster-than-Nyquist (FTN) Signaling Detector for Ultra High-Order QAM

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