{"id":"https://openalex.org/W2125478123","doi":"https://doi.org/10.1109/glocom.2010.5684008","title":"Routing and Spectrum Allocation in OFDM-Based Optical Networks with Elastic Bandwidth Allocation","display_name":"Routing and Spectrum Allocation in OFDM-Based Optical Networks with Elastic Bandwidth Allocation","publication_year":2010,"publication_date":"2010-12-01","ids":{"openalex":"https://openalex.org/W2125478123","doi":"https://doi.org/10.1109/glocom.2010.5684008","mag":"2125478123"},"language":"en","primary_location":{"id":"doi:10.1109/glocom.2010.5684008","is_oa":false,"landing_page_url":"https://doi.org/10.1109/glocom.2010.5684008","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2010 IEEE Global Telecommunications Conference GLOBECOM 2010","raw_type":"proceedings-article"},"type":"conference-paper","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/A5091236670","display_name":"K. Christodoulopoulos","orcid":"https://orcid.org/0000-0002-7241-366X"},"institutions":[{"id":"https://openalex.org/I120729142","display_name":"Computer Technology Institute and Press \u201cDIOPHANTUS\u201d","ror":"https://ror.org/021nszj63","country_code":"GR","type":"facility","lineage":["https://openalex.org/I120729142","https://openalex.org/I4210154149"]},{"id":"https://openalex.org/I174878644","display_name":"University of Patras","ror":"https://ror.org/017wvtq80","country_code":"GR","type":"education","lineage":["https://openalex.org/I174878644"]}],"countries":["GR"],"is_corresponding":false,"raw_author_name":"K. Christodoulopoulos","raw_affiliation_strings":["Computer Engineering and Informatics Department, Research Academic Computer Technology Institute, University of Patras, Patras, Greece","Comput. Eng. & Inf. Dept, Univ. of Patras, Patras, Greece"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Computer Engineering and Informatics Department, Research Academic Computer Technology Institute, University of Patras, Patras, Greece","institution_ids":["https://openalex.org/I120729142","https://openalex.org/I174878644"]},{"raw_affiliation_string":"Comput. Eng. & Inf. Dept, Univ. of Patras, Patras, Greece","institution_ids":["https://openalex.org/I174878644"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5079573429","display_name":"Ioannis Tomkos","orcid":"https://orcid.org/0000-0001-9721-3405"},"institutions":[{"id":"https://openalex.org/I4210162098","display_name":"Athens Information Technology","ror":"https://ror.org/05eqt7s39","country_code":"GR","type":"nonprofit","lineage":["https://openalex.org/I4210162098"]}],"countries":["GR"],"is_corresponding":false,"raw_author_name":"I. Tomkos","raw_affiliation_strings":["Athens Information Technology Center, Paiania, Greece","Athens Inf. Technol. Center, Paiania, Greece"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Athens Information Technology Center, Paiania, Greece","institution_ids":["https://openalex.org/I4210162098"]},{"raw_affiliation_string":"Athens Inf. Technol. Center, Paiania, Greece","institution_ids":["https://openalex.org/I4210162098"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5046309517","display_name":"Emmanouel Varvarigos","orcid":"https://orcid.org/0000-0002-4942-1362"},"institutions":[{"id":"https://openalex.org/I120729142","display_name":"Computer Technology Institute and Press \u201cDIOPHANTUS\u201d","ror":"https://ror.org/021nszj63","country_code":"GR","type":"facility","lineage":["https://openalex.org/I120729142","https://openalex.org/I4210154149"]},{"id":"https://openalex.org/I174878644","display_name":"University of Patras","ror":"https://ror.org/017wvtq80","country_code":"GR","type":"education","lineage":["https://openalex.org/I174878644"]}],"countries":["GR"],"is_corresponding":false,"raw_author_name":"E. A. Varvarigos","raw_affiliation_strings":["Computer Engineering and Informatics Department, Research Academic Computer Technology Institute, University of Patras, Patras, Greece","Comput. Eng. & Inf. Dept, Univ. of Patras, Patras, Greece"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Computer Engineering and Informatics Department, Research Academic Computer Technology Institute, University of Patras, Patras, Greece","institution_ids":["https://openalex.org/I120729142","https://openalex.org/I174878644"]},{"raw_affiliation_string":"Comput. Eng. & Inf. Dept, Univ. of Patras, Patras, Greece","institution_ids":["https://openalex.org/I174878644"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":248,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10847","display_name":"Advanced 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/T10847","display_name":"Advanced 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/T10232","display_name":"Optical Network 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/T10767","display_name":"Advanced Photonic Communication Systems","score":0.9977999925613403,"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/orthogonal-frequency-division-multiplexing","display_name":"Orthogonal frequency-division multiplexing","score":0.7862064838409424},{"id":"https://openalex.org/keywords/frequency-allocation","display_name":"Frequency allocation","score":0.687301516532898},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6448729038238525},{"id":"https://openalex.org/keywords/bandwidth-allocation","display_name":"Bandwidth allocation","score":0.6005244851112366},{"id":"https://openalex.org/keywords/bandwidth","display_name":"Bandwidth (computing)","score":0.5478978157043457},{"id":"https://openalex.org/keywords/heuristic","display_name":"Heuristic","score":0.5194039344787598},{"id":"https://openalex.org/keywords/traffic-grooming","display_name":"Traffic grooming","score":0.5032510161399841},{"id":"https://openalex.org/keywords/routing","display_name":"Routing (electronic design automation)","score":0.4970860779285431},{"id":"https://openalex.org/keywords/spectral-efficiency","display_name":"Spectral efficiency","score":0.490657240152359},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.4609855115413666},{"id":"https://openalex.org/keywords/channel-allocation-schemes","display_name":"Channel allocation schemes","score":0.4482713043689728},{"id":"https://openalex.org/keywords/wavelength-division-multiplexing","display_name":"Wavelength-division multiplexing","score":0.4233851432800293},{"id":"https://openalex.org/keywords/multiplexing","display_name":"Multiplexing","score":0.4159421920776367},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.37189239263534546},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.3227994441986084},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.2140553891658783},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.1826116442680359},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.17388948798179626},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.1333562433719635},{"id":"https://openalex.org/keywords/wavelength","display_name":"Wavelength","score":0.09516006708145142}],"concepts":[{"id":"https://openalex.org/C40409654","wikidata":"https://www.wikidata.org/wiki/Q375889","display_name":"Orthogonal frequency-division multiplexing","level":3,"score":0.7862064838409424},{"id":"https://openalex.org/C134579502","wikidata":"https://www.wikidata.org/wiki/Q1455619","display_name":"Frequency allocation","level":2,"score":0.687301516532898},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6448729038238525},{"id":"https://openalex.org/C200157131","wikidata":"https://www.wikidata.org/wiki/Q4854763","display_name":"Bandwidth allocation","level":3,"score":0.6005244851112366},{"id":"https://openalex.org/C2776257435","wikidata":"https://www.wikidata.org/wiki/Q1576430","display_name":"Bandwidth (computing)","level":2,"score":0.5478978157043457},{"id":"https://openalex.org/C173801870","wikidata":"https://www.wikidata.org/wiki/Q201413","display_name":"Heuristic","level":2,"score":0.5194039344787598},{"id":"https://openalex.org/C162396882","wikidata":"https://www.wikidata.org/wiki/Q7832502","display_name":"Traffic grooming","level":4,"score":0.5032510161399841},{"id":"https://openalex.org/C74172769","wikidata":"https://www.wikidata.org/wiki/Q1446839","display_name":"Routing (electronic design automation)","level":2,"score":0.4970860779285431},{"id":"https://openalex.org/C137246740","wikidata":"https://www.wikidata.org/wiki/Q583970","display_name":"Spectral efficiency","level":3,"score":0.490657240152359},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.4609855115413666},{"id":"https://openalex.org/C114237682","wikidata":"https://www.wikidata.org/wiki/Q5072483","display_name":"Channel allocation schemes","level":3,"score":0.4482713043689728},{"id":"https://openalex.org/C160724564","wikidata":"https://www.wikidata.org/wiki/Q1620670","display_name":"Wavelength-division multiplexing","level":3,"score":0.4233851432800293},{"id":"https://openalex.org/C19275194","wikidata":"https://www.wikidata.org/wiki/Q222903","display_name":"Multiplexing","level":2,"score":0.4159421920776367},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.37189239263534546},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.3227994441986084},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.2140553891658783},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.1826116442680359},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.17388948798179626},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.1333562433719635},{"id":"https://openalex.org/C6260449","wikidata":"https://www.wikidata.org/wiki/Q41364","display_name":"Wavelength","level":2,"score":0.09516006708145142},{"id":"https://openalex.org/C49040817","wikidata":"https://www.wikidata.org/wiki/Q193091","display_name":"Optoelectronics","level":1,"score":0.0},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/glocom.2010.5684008","is_oa":false,"landing_page_url":"https://doi.org/10.1109/glocom.2010.5684008","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2010 IEEE Global Telecommunications Conference GLOBECOM 2010","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":11,"referenced_works":["https://openalex.org/W1969568912","https://openalex.org/W2053913299","https://openalex.org/W2069323107","https://openalex.org/W2082897712","https://openalex.org/W2089983976","https://openalex.org/W2097828306","https://openalex.org/W2146419976","https://openalex.org/W2153372660","https://openalex.org/W2161111878","https://openalex.org/W2167032006","https://openalex.org/W7008583937"],"related_works":["https://openalex.org/W1979722674","https://openalex.org/W1562629347","https://openalex.org/W2315036522","https://openalex.org/W1982713103","https://openalex.org/W1583230519","https://openalex.org/W2787778301","https://openalex.org/W2596886998","https://openalex.org/W3085482172","https://openalex.org/W2047161836","https://openalex.org/W2069790387"],"abstract_inverted_index":{"Orthogonal":[0],"Frequency":[1],"Division":[2],"Multiplexing":[3],"(OFDM)":[4],"has":[5],"been":[6],"recently":[7],"proposed":[8,215],"as":[9,96],"a":[10,54,81,141,166,198],"modulation":[11],"technique":[12],"for":[13,72],"optical":[14,48],"networks,":[15,110],"due":[16],"to":[17,32,66,98,115,133,176,205,223],"its":[18],"good":[19],"spectral":[20],"efficiency":[21],"and":[22,91,102,111,138,154,159,173],"impairment":[23],"tolerance.":[24],"Optical":[25],"OFDM":[26,85],"is":[27,202],"much":[28],"more":[29],"flexible":[30],"compared":[31],"traditional":[33,108],"WDM":[34,109],"systems,":[35],"enabling":[36],"elastic":[37],"bandwidth":[38],"transmissions.":[39],"We":[40,87,119,163],"consider":[41],"the":[42,59,64,89,99,117,130,135,178,190,214],"planning":[43,179],"problem":[44,106,180],"of":[45,63,84,107],"an":[46,123],"OFDM-based":[47],"network":[49],"where":[50],"we":[51],"are":[52,70,196],"given":[53],"traffic":[55,136,185],"matrix":[56,186],"that":[57,128,144,169,213],"includes":[58],"requested":[60,74],"transmission":[61],"rates":[62],"connections":[65,171],"be":[67],"served.":[68],"Connections":[69],"provisioned":[71],"their":[73],"rate":[75],"by":[76,121,181],"elastically":[77],"allocating":[78],"spectrum":[79,131,156],"using":[80],"variable":[82],"number":[83],"subcarriers.":[86],"introduce":[88],"Routing":[90,101],"Spectrum":[92],"Allocation":[93],"(RSA)":[94],"problem,":[95],"opposed":[97],"typical":[100],"Wavelength":[103],"Assignment":[104],"(RWA)":[105],"present":[112,140],"various":[113],"algorithms":[114],"solve":[116,177],"RSA.":[118],"start":[120],"presenting":[122],"optimal":[124,224],"ILP":[125],"RSA":[126,146],"algorithm":[127,168],"minimizes":[129],"used":[132,204],"serve":[134],"matrix,":[137],"also":[139,164,203],"decomposition":[142],"method":[143],"breaks":[145],"into":[147],"two":[148,193],"substituent":[149],"subproblems,":[150],"namely,":[151],"(i)":[152],"routing":[153],"(ii)":[155],"allocation":[157],"(R+SA)":[158],"solves":[160],"them":[161],"sequentially.":[162],"propose":[165],"heuristic":[167,217],"serves":[170],"one-by-one":[172],"use":[174],"it":[175],"sequentially":[182],"serving":[183],"all":[184],"connections.":[187],"To":[188],"feed":[189],"sequential":[191,216],"algorithm,":[192],"ordering":[194,220],"policies":[195],"proposed;":[197],"simulated":[199],"annealing":[200],"meta-heuristic":[201],"obtain":[206],"even":[207],"better":[208],"orderings.":[209],"Our":[210],"results":[211],"indicate":[212],"with":[218],"appropriate":[219],"yields":[221],"close":[222],"solutions":[225],"in":[226],"low":[227],"running":[228],"times.":[229]},"counts_by_year":[{"year":2025,"cited_by_count":6},{"year":2024,"cited_by_count":6},{"year":2023,"cited_by_count":6},{"year":2022,"cited_by_count":11},{"year":2021,"cited_by_count":20},{"year":2020,"cited_by_count":14},{"year":2019,"cited_by_count":12},{"year":2018,"cited_by_count":18},{"year":2017,"cited_by_count":19},{"year":2016,"cited_by_count":27},{"year":2015,"cited_by_count":33},{"year":2014,"cited_by_count":32},{"year":2013,"cited_by_count":16},{"year":2012,"cited_by_count":18}],"updated_date":"2026-07-14T23:27:15.235271","created_date":"2025-10-10T00:00:00"}