Adaptive Background Compensation of Frequency Interleaved DACs with Application to Coherent Optical Transceivers

Autores
Galetto, Agustín C.; Reyes, Benjamín Tomás; Morero, Damián Alfonso; Hueda, Mario Rafael
Año de publicación
2021
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Digital-to-analog converters (DACs) with bandwidths larger than 70 GHz and sampling rates in excess of 170 GS/s will soon be required in ultra-high speed communication applications such as coherent optical transceivers operating at symbol rates of 140 GBd and beyond. Frequency interleaving has been proposed as a way to break the bandwidth bottleneck in such applications. Splitting the input signal into multiple frequency bands reduces the required bandwidth per interleaved DAC and therefore it enables the synthesis of greater bandwidth signals in the reconstructed output. Elaborate digital signal processing (DSP) is required to seamlessly stitch together the sub-bands and compensate the errors of the analog signal path, which would otherwise severely degrade the performance of the communication system. Adaptive DSP techniques are required to automatically compensate errors caused by process, voltage, and temperature variations in the technology (e.g., CMOS, SiGe, etc.) implementations of the data converters, and therefore ensure high manufacturing yield. These techniques must operate in background mode to avoid interfering with the normal operation of the communication system. This work introduces an adaptive background compensation scheme for frequency interleaved DACs (FI-DACs). The primary application example is a 128 GBd QAM16 coherent optical transceiver. However, the technique is applicable to other types of communication transceivers, and it can be generalized to arbitrary signals, as long as they are stationary or quasi-stationary and have a wideband continuous spectrum. The key elements of the proposed technique are a MIMO equalizer and the backpropagation algorithm. Numerical simulation results for the aforementioned application example show that the signal to noise and distortion ratio (SNDR) of the FI-DAC is boosted by more than 25 dB when the proposed compensation technique is applied in the presence of typical analog mismatches. Furthermore, the optical signal to noise ratio penalty of the optical transceiver is reduced from 6 dB to 0.1 dB.
Fil: Galetto, Agustín C.. Fundación Fulgor; Argentina
Fil: Reyes, Benjamín Tomás. Fundación Fulgor; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Morero, Damián Alfonso. Universidad Nacional de Córdoba; Argentina
Fil: Hueda, Mario Rafael. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Estudios Avanzados en Ingeniería y Tecnología. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto de Estudios Avanzados en Ingeniería y Tecnología; Argentina
Materia
BACKGROUND CALIBRATION
ERROR BACKPROPAGATION
FREQUENCY INTERLEAVING DAC
HIGH-SPEED OPTICAL TRANSMITTER
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/150463
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/150463
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Adaptive Background Compensation of Frequency Interleaved DACs with Application to Coherent Optical TransceiversGaletto, Agustín C.Reyes, Benjamín TomásMorero, Damián AlfonsoHueda, Mario RafaelBACKGROUND CALIBRATIONERROR BACKPROPAGATIONFREQUENCY INTERLEAVING DACHIGH-SPEED OPTICAL TRANSMITTERhttps://purl.org/becyt/ford/2.2https://purl.org/becyt/ford/2Digital-to-analog converters (DACs) with bandwidths larger than 70 GHz and sampling rates in excess of 170 GS/s will soon be required in ultra-high speed communication applications such as coherent optical transceivers operating at symbol rates of 140 GBd and beyond. Frequency interleaving has been proposed as a way to break the bandwidth bottleneck in such applications. Splitting the input signal into multiple frequency bands reduces the required bandwidth per interleaved DAC and therefore it enables the synthesis of greater bandwidth signals in the reconstructed output. Elaborate digital signal processing (DSP) is required to seamlessly stitch together the sub-bands and compensate the errors of the analog signal path, which would otherwise severely degrade the performance of the communication system. Adaptive DSP techniques are required to automatically compensate errors caused by process, voltage, and temperature variations in the technology (e.g., CMOS, SiGe, etc.) implementations of the data converters, and therefore ensure high manufacturing yield. These techniques must operate in background mode to avoid interfering with the normal operation of the communication system. This work introduces an adaptive background compensation scheme for frequency interleaved DACs (FI-DACs). The primary application example is a 128 GBd QAM16 coherent optical transceiver. However, the technique is applicable to other types of communication transceivers, and it can be generalized to arbitrary signals, as long as they are stationary or quasi-stationary and have a wideband continuous spectrum. The key elements of the proposed technique are a MIMO equalizer and the backpropagation algorithm. Numerical simulation results for the aforementioned application example show that the signal to noise and distortion ratio (SNDR) of the FI-DAC is boosted by more than 25 dB when the proposed compensation technique is applied in the presence of typical analog mismatches. Furthermore, the optical signal to noise ratio penalty of the optical transceiver is reduced from 6 dB to 0.1 dB.Fil: Galetto, Agustín C.. Fundación Fulgor; ArgentinaFil: Reyes, Benjamín Tomás. Fundación Fulgor; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Morero, Damián Alfonso. Universidad Nacional de Córdoba; ArgentinaFil: Hueda, Mario Rafael. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Estudios Avanzados en Ingeniería y Tecnología. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto de Estudios Avanzados en Ingeniería y Tecnología; ArgentinaInstitute of Electrical and Electronics Engineers2021-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/150463Galetto, Agustín C.; Reyes, Benjamín Tomás; Morero, Damián Alfonso; Hueda, Mario Rafael; Adaptive Background Compensation of Frequency Interleaved DACs with Application to Coherent Optical Transceivers; Institute of Electrical and Electronics Engineers; IEEE Access; 9; 3-2021; 41821-418322169-3536CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://ieeexplore.ieee.org/document/9374421info:eu-repo/semantics/altIdentifier/doi/10.1109/ACCESS.2021.3065269info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-08-25T14:46:42Zoai:ri.conicet.gov.ar:11336/150463instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982026-08-25 14:46:43.316CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Adaptive Background Compensation of Frequency Interleaved DACs with Application to Coherent Optical Transceivers
title Adaptive Background Compensation of Frequency Interleaved DACs with Application to Coherent Optical Transceivers
spellingShingle Adaptive Background Compensation of Frequency Interleaved DACs with Application to Coherent Optical Transceivers
Galetto, Agustín C.
BACKGROUND CALIBRATION
ERROR BACKPROPAGATION
FREQUENCY INTERLEAVING DAC
HIGH-SPEED OPTICAL TRANSMITTER
title_short Adaptive Background Compensation of Frequency Interleaved DACs with Application to Coherent Optical Transceivers
title_full Adaptive Background Compensation of Frequency Interleaved DACs with Application to Coherent Optical Transceivers
title_fullStr Adaptive Background Compensation of Frequency Interleaved DACs with Application to Coherent Optical Transceivers
title_full_unstemmed Adaptive Background Compensation of Frequency Interleaved DACs with Application to Coherent Optical Transceivers
title_sort Adaptive Background Compensation of Frequency Interleaved DACs with Application to Coherent Optical Transceivers
dc.creator.none.fl_str_mv Galetto, Agustín C.
Reyes, Benjamín Tomás
Morero, Damián Alfonso
Hueda, Mario Rafael
author Galetto, Agustín C.
author_facet Galetto, Agustín C.
Reyes, Benjamín Tomás
Morero, Damián Alfonso
Hueda, Mario Rafael
author_role author
author2 Reyes, Benjamín Tomás
Morero, Damián Alfonso
Hueda, Mario Rafael
author2_role author
author
author
dc.subject.none.fl_str_mv BACKGROUND CALIBRATION
ERROR BACKPROPAGATION
FREQUENCY INTERLEAVING DAC
HIGH-SPEED OPTICAL TRANSMITTER
topic BACKGROUND CALIBRATION
ERROR BACKPROPAGATION
FREQUENCY INTERLEAVING DAC
HIGH-SPEED OPTICAL TRANSMITTER
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.2
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Digital-to-analog converters (DACs) with bandwidths larger than 70 GHz and sampling rates in excess of 170 GS/s will soon be required in ultra-high speed communication applications such as coherent optical transceivers operating at symbol rates of 140 GBd and beyond. Frequency interleaving has been proposed as a way to break the bandwidth bottleneck in such applications. Splitting the input signal into multiple frequency bands reduces the required bandwidth per interleaved DAC and therefore it enables the synthesis of greater bandwidth signals in the reconstructed output. Elaborate digital signal processing (DSP) is required to seamlessly stitch together the sub-bands and compensate the errors of the analog signal path, which would otherwise severely degrade the performance of the communication system. Adaptive DSP techniques are required to automatically compensate errors caused by process, voltage, and temperature variations in the technology (e.g., CMOS, SiGe, etc.) implementations of the data converters, and therefore ensure high manufacturing yield. These techniques must operate in background mode to avoid interfering with the normal operation of the communication system. This work introduces an adaptive background compensation scheme for frequency interleaved DACs (FI-DACs). The primary application example is a 128 GBd QAM16 coherent optical transceiver. However, the technique is applicable to other types of communication transceivers, and it can be generalized to arbitrary signals, as long as they are stationary or quasi-stationary and have a wideband continuous spectrum. The key elements of the proposed technique are a MIMO equalizer and the backpropagation algorithm. Numerical simulation results for the aforementioned application example show that the signal to noise and distortion ratio (SNDR) of the FI-DAC is boosted by more than 25 dB when the proposed compensation technique is applied in the presence of typical analog mismatches. Furthermore, the optical signal to noise ratio penalty of the optical transceiver is reduced from 6 dB to 0.1 dB.
Fil: Galetto, Agustín C.. Fundación Fulgor; Argentina
Fil: Reyes, Benjamín Tomás. Fundación Fulgor; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Morero, Damián Alfonso. Universidad Nacional de Córdoba; Argentina
Fil: Hueda, Mario Rafael. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Estudios Avanzados en Ingeniería y Tecnología. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto de Estudios Avanzados en Ingeniería y Tecnología; Argentina
description Digital-to-analog converters (DACs) with bandwidths larger than 70 GHz and sampling rates in excess of 170 GS/s will soon be required in ultra-high speed communication applications such as coherent optical transceivers operating at symbol rates of 140 GBd and beyond. Frequency interleaving has been proposed as a way to break the bandwidth bottleneck in such applications. Splitting the input signal into multiple frequency bands reduces the required bandwidth per interleaved DAC and therefore it enables the synthesis of greater bandwidth signals in the reconstructed output. Elaborate digital signal processing (DSP) is required to seamlessly stitch together the sub-bands and compensate the errors of the analog signal path, which would otherwise severely degrade the performance of the communication system. Adaptive DSP techniques are required to automatically compensate errors caused by process, voltage, and temperature variations in the technology (e.g., CMOS, SiGe, etc.) implementations of the data converters, and therefore ensure high manufacturing yield. These techniques must operate in background mode to avoid interfering with the normal operation of the communication system. This work introduces an adaptive background compensation scheme for frequency interleaved DACs (FI-DACs). The primary application example is a 128 GBd QAM16 coherent optical transceiver. However, the technique is applicable to other types of communication transceivers, and it can be generalized to arbitrary signals, as long as they are stationary or quasi-stationary and have a wideband continuous spectrum. The key elements of the proposed technique are a MIMO equalizer and the backpropagation algorithm. Numerical simulation results for the aforementioned application example show that the signal to noise and distortion ratio (SNDR) of the FI-DAC is boosted by more than 25 dB when the proposed compensation technique is applied in the presence of typical analog mismatches. Furthermore, the optical signal to noise ratio penalty of the optical transceiver is reduced from 6 dB to 0.1 dB.
publishDate 2021
dc.date.none.fl_str_mv 2021-03
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/150463
Galetto, Agustín C.; Reyes, Benjamín Tomás; Morero, Damián Alfonso; Hueda, Mario Rafael; Adaptive Background Compensation of Frequency Interleaved DACs with Application to Coherent Optical Transceivers; Institute of Electrical and Electronics Engineers; IEEE Access; 9; 3-2021; 41821-41832
2169-3536
CONICET Digital
CONICET
url http://hdl.handle.net/11336/150463
identifier_str_mv Galetto, Agustín C.; Reyes, Benjamín Tomás; Morero, Damián Alfonso; Hueda, Mario Rafael; Adaptive Background Compensation of Frequency Interleaved DACs with Application to Coherent Optical Transceivers; Institute of Electrical and Electronics Engineers; IEEE Access; 9; 3-2021; 41821-41832
2169-3536
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://ieeexplore.ieee.org/document/9374421
info:eu-repo/semantics/altIdentifier/doi/10.1109/ACCESS.2021.3065269
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Institute of Electrical and Electronics Engineers
publisher.none.fl_str_mv Institute of Electrical and Electronics Engineers
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.364332

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