{"id":"https://openalex.org/W2188791664","doi":"https://doi.org/10.1109/ecoc.2015.7341681","title":"160-Gbps Nyquist PAM4 transmitter using a digital-preprocessed analog-multiplexed DAC","display_name":"160-Gbps Nyquist PAM4 transmitter using a digital-preprocessed analog-multiplexed DAC","publication_year":2015,"publication_date":"2015-09-01","ids":{"openalex":"https://openalex.org/W2188791664","doi":"https://doi.org/10.1109/ecoc.2015.7341681","mag":"2188791664"},"language":"en","primary_location":{"id":"doi:10.1109/ecoc.2015.7341681","is_oa":false,"landing_page_url":"https://doi.org/10.1109/ecoc.2015.7341681","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2015 European Conference on Optical Communication (ECOC)","raw_type":"proceedings-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5015411968","display_name":"Hiroshi Yamazaki","orcid":"https://orcid.org/0000-0001-9434-2957"},"institutions":[{"id":"https://openalex.org/I2251713219","display_name":"NTT (Japan)","ror":"https://ror.org/00berct97","country_code":"JP","type":"company","lineage":["https://openalex.org/I2251713219"]}],"countries":["JP"],"is_corresponding":true,"raw_author_name":"Hiroshi Yamazaki","raw_affiliation_strings":["NTT Device Technology Labs., NTT Corporation, Atsugi, Kanagawa, Japan"],"affiliations":[{"raw_affiliation_string":"NTT Device Technology Labs., NTT Corporation, Atsugi, Kanagawa, Japan","institution_ids":["https://openalex.org/I2251713219"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5003666823","display_name":"Munehiko Nagatani","orcid":"https://orcid.org/0000-0003-2744-3058"},"institutions":[{"id":"https://openalex.org/I2251713219","display_name":"NTT (Japan)","ror":"https://ror.org/00berct97","country_code":"JP","type":"company","lineage":["https://openalex.org/I2251713219"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Munehiko Nagatani","raw_affiliation_strings":["NTT Device Technology Labs., NTT Corporation, Atsugi, Kanagawa, Japan"],"affiliations":[{"raw_affiliation_string":"NTT Device Technology Labs., NTT Corporation, Atsugi, Kanagawa, Japan","institution_ids":["https://openalex.org/I2251713219"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5113704767","display_name":"Shiaeru Kanazawa","orcid":null},"institutions":[{"id":"https://openalex.org/I2251713219","display_name":"NTT (Japan)","ror":"https://ror.org/00berct97","country_code":"JP","type":"company","lineage":["https://openalex.org/I2251713219"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Shiaeru Kanazawa","raw_affiliation_strings":["NTT Device Innovation Center, NTT Corporation, Atsugi, Kanagawa, Japan"],"affiliations":[{"raw_affiliation_string":"NTT Device Innovation Center, NTT Corporation, Atsugi, Kanagawa, Japan","institution_ids":["https://openalex.org/I2251713219"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5015690849","display_name":"Hideyuki Nosaka","orcid":"https://orcid.org/0000-0002-3994-0118"},"institutions":[{"id":"https://openalex.org/I2251713219","display_name":"NTT (Japan)","ror":"https://ror.org/00berct97","country_code":"JP","type":"company","lineage":["https://openalex.org/I2251713219"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Hideyuki Nosaka","raw_affiliation_strings":["NTT Device Technology Labs., NTT Corporation, Atsugi, Kanagawa, Japan"],"affiliations":[{"raw_affiliation_string":"NTT Device Technology Labs., NTT Corporation, Atsugi, Kanagawa, Japan","institution_ids":["https://openalex.org/I2251713219"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101512264","display_name":"Toshikazu Hashimoto","orcid":"https://orcid.org/0000-0002-1661-2736"},"institutions":[{"id":"https://openalex.org/I2251713219","display_name":"NTT (Japan)","ror":"https://ror.org/00berct97","country_code":"JP","type":"company","lineage":["https://openalex.org/I2251713219"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Toshikazu Hashimoto","raw_affiliation_strings":["NTT Device Technology Labs., NTT Corporation, Atsugi, Kanagawa, Japan"],"affiliations":[{"raw_affiliation_string":"NTT Device Technology Labs., NTT Corporation, Atsugi, Kanagawa, Japan","institution_ids":["https://openalex.org/I2251713219"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5113882840","display_name":"Akihide Sano","orcid":null},"institutions":[{"id":"https://openalex.org/I2251713219","display_name":"NTT (Japan)","ror":"https://ror.org/00berct97","country_code":"JP","type":"company","lineage":["https://openalex.org/I2251713219"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Akihide Sano","raw_affiliation_strings":["NTT Network Innovation Labs., NTT Corporation, Yokosuka, Kanagawa, Japan"],"affiliations":[{"raw_affiliation_string":"NTT Network Innovation Labs., NTT Corporation, Yokosuka, Kanagawa, Japan","institution_ids":["https://openalex.org/I2251713219"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5109864761","display_name":"Yutaka Miyamoto","orcid":"https://orcid.org/0000-0001-5813-4667"},"institutions":[{"id":"https://openalex.org/I2251713219","display_name":"NTT (Japan)","ror":"https://ror.org/00berct97","country_code":"JP","type":"company","lineage":["https://openalex.org/I2251713219"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Yutaka Miyamoto","raw_affiliation_strings":["NTT Network Innovation Labs., NTT Corporation, Yokosuka, Kanagawa, Japan"],"affiliations":[{"raw_affiliation_string":"NTT Network Innovation Labs., NTT Corporation, Yokosuka, Kanagawa, Japan","institution_ids":["https://openalex.org/I2251713219"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":7,"corresponding_author_ids":["https://openalex.org/A5015411968"],"corresponding_institution_ids":["https://openalex.org/I2251713219"],"apc_list":null,"apc_paid":null,"fwci":4.5376,"has_fulltext":false,"cited_by_count":32,"citation_normalized_percentile":{"value":0.95045621,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":99},"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"3"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10232","display_name":"Optical Network Technologies","score":1.0,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10232","display_name":"Optical Network Technologies","score":1.0,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11417","display_name":"Advancements in PLL and VCO Technologies","score":0.9993000030517578,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11429","display_name":"Semiconductor Lasers and Optical Devices","score":0.9983000159263611,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/multiplexer","display_name":"Multiplexer","score":0.8584294319152832},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6864975094795227},{"id":"https://openalex.org/keywords/multiplexing","display_name":"Multiplexing","score":0.6425995826721191},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.6177446246147156},{"id":"https://openalex.org/keywords/bandwidth","display_name":"Bandwidth (computing)","score":0.5948811173439026},{"id":"https://openalex.org/keywords/transmitter","display_name":"Transmitter","score":0.5594296455383301},{"id":"https://openalex.org/keywords/nyquist\u2013shannon-sampling-theorem","display_name":"Nyquist\u2013Shannon sampling theorem","score":0.5327375531196594},{"id":"https://openalex.org/keywords/encoder","display_name":"Encoder","score":0.4973593056201935},{"id":"https://openalex.org/keywords/nyquist-frequency","display_name":"Nyquist frequency","score":0.48182645440101624},{"id":"https://openalex.org/keywords/transmission","display_name":"Transmission (telecommunications)","score":0.437623530626297},{"id":"https://openalex.org/keywords/electrical-engineering","display_name":"Electrical engineering","score":0.33587419986724854},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.2056298553943634},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.16936063766479492}],"concepts":[{"id":"https://openalex.org/C70970002","wikidata":"https://www.wikidata.org/wiki/Q189434","display_name":"Multiplexer","level":3,"score":0.8584294319152832},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6864975094795227},{"id":"https://openalex.org/C19275194","wikidata":"https://www.wikidata.org/wiki/Q222903","display_name":"Multiplexing","level":2,"score":0.6425995826721191},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.6177446246147156},{"id":"https://openalex.org/C2776257435","wikidata":"https://www.wikidata.org/wiki/Q1576430","display_name":"Bandwidth (computing)","level":2,"score":0.5948811173439026},{"id":"https://openalex.org/C47798520","wikidata":"https://www.wikidata.org/wiki/Q190157","display_name":"Transmitter","level":3,"score":0.5594296455383301},{"id":"https://openalex.org/C288623","wikidata":"https://www.wikidata.org/wiki/Q679800","display_name":"Nyquist\u2013Shannon sampling theorem","level":2,"score":0.5327375531196594},{"id":"https://openalex.org/C118505674","wikidata":"https://www.wikidata.org/wiki/Q42586063","display_name":"Encoder","level":2,"score":0.4973593056201935},{"id":"https://openalex.org/C98273374","wikidata":"https://www.wikidata.org/wiki/Q1501757","display_name":"Nyquist frequency","level":3,"score":0.48182645440101624},{"id":"https://openalex.org/C761482","wikidata":"https://www.wikidata.org/wiki/Q118093","display_name":"Transmission (telecommunications)","level":2,"score":0.437623530626297},{"id":"https://openalex.org/C119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","level":1,"score":0.33587419986724854},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.2056298553943634},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.16936063766479492},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.0},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/ecoc.2015.7341681","is_oa":false,"landing_page_url":"https://doi.org/10.1109/ecoc.2015.7341681","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2015 European Conference on Optical Communication (ECOC)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.7699999809265137,"id":"https://metadata.un.org/sdg/7","display_name":"Affordable and clean energy"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":7,"referenced_works":["https://openalex.org/W1601726610","https://openalex.org/W2009169305","https://openalex.org/W2043378149","https://openalex.org/W2076618574","https://openalex.org/W2084165267","https://openalex.org/W2133188315","https://openalex.org/W2146347351"],"related_works":["https://openalex.org/W2039899645","https://openalex.org/W2371342700","https://openalex.org/W2327110311","https://openalex.org/W2363059241","https://openalex.org/W3215187042","https://openalex.org/W4233510838","https://openalex.org/W266342242","https://openalex.org/W2100439961","https://openalex.org/W1500996803","https://openalex.org/W2081608853"],"abstract_inverted_index":{"We":[0],"proposed":[1],"an":[2,14],"ultra-wide-band":[3],"DAC":[4],"configuration":[5],"consisting":[6],"of":[7,25],"a":[8,33],"digital":[9],"preprocessor,":[10],"two":[11],"sub-DACs,":[12],"and":[13],"analog":[15],"multiplexer.":[16],"The":[17,28],"output":[18],"bandwidth":[19],"is":[20],"nearly":[21],"doubled":[22],"from":[23],"that":[24],"the":[26],"sub-DACs.":[27],"idea":[29],"was":[30],"verified":[31],"by":[32],"160-Gbps":[34],"Nyquist":[35],"PAM4":[36],"transmission.":[37]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":1},{"year":2022,"cited_by_count":2},{"year":2021,"cited_by_count":1},{"year":2020,"cited_by_count":2},{"year":2019,"cited_by_count":2},{"year":2018,"cited_by_count":6},{"year":2017,"cited_by_count":7},{"year":2016,"cited_by_count":9},{"year":2015,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}