{"id":"https://openalex.org/W2097663604","doi":"https://doi.org/10.1109/wsa.2008.4475548","title":"Improved dual frequency multiple access relay scheme for spatially correlated sources","display_name":"Improved dual frequency multiple access relay scheme for spatially correlated sources","publication_year":2008,"publication_date":"2008-02-01","ids":{"openalex":"https://openalex.org/W2097663604","doi":"https://doi.org/10.1109/wsa.2008.4475548","mag":"2097663604"},"language":"en","primary_location":{"id":"doi:10.1109/wsa.2008.4475548","is_oa":false,"landing_page_url":"https://doi.org/10.1109/wsa.2008.4475548","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2008 International ITG Workshop on Smart Antennas","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/A5006908887","display_name":"Jose Angel Esteban","orcid":null},"institutions":[{"id":"https://openalex.org/I170828890","display_name":"Centro de Estudios e Investigaciones T\u00e9cnicas de Gipuzkoa","ror":"https://ror.org/022wqqf69","country_code":"ES","type":"nonprofit","lineage":["https://openalex.org/I170828890"]},{"id":"https://openalex.org/I88155538","display_name":"Universidad de Navarra","ror":"https://ror.org/02rxc7m23","country_code":"ES","type":"education","lineage":["https://openalex.org/I88155538"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"Jose Angel Esteban","raw_affiliation_strings":["CEIT and TECNUN (University of Navarra), Donostia-San-Sebastian, Spain","CEIT and TECNUN (University of Navarra), 20009 Donostia-San Sebastian, Spain"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"CEIT and TECNUN (University of Navarra), Donostia-San-Sebastian, Spain","institution_ids":["https://openalex.org/I170828890","https://openalex.org/I88155538"]},{"raw_affiliation_string":"CEIT and TECNUN (University of Navarra), 20009 Donostia-San Sebastian, Spain","institution_ids":["https://openalex.org/I88155538"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5017326471","display_name":"Javier Del Ser","orcid":"https://orcid.org/0000-0002-1260-9775"},"institutions":[{"id":"https://openalex.org/I162361429","display_name":"Mondragon Unibertsitatea","ror":"https://ror.org/00wvqgd19","country_code":"ES","type":"education","lineage":["https://openalex.org/I162361429"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"Javier Del Ser","raw_affiliation_strings":["Signal Processing & Communications Group, University of Mondragon, Mondragon, Spain","Signal Processing & Communications Group, University of Mondragon, 20500, Spain"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Signal Processing & Communications Group, University of Mondragon, Mondragon, Spain","institution_ids":["https://openalex.org/I162361429"]},{"raw_affiliation_string":"Signal Processing & Communications Group, University of Mondragon, 20500, Spain","institution_ids":["https://openalex.org/I162361429"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5077285752","display_name":"Pedro M. Crespo","orcid":"https://orcid.org/0000-0001-8259-3353"},"institutions":[{"id":"https://openalex.org/I170828890","display_name":"Centro de Estudios e Investigaciones T\u00e9cnicas de Gipuzkoa","ror":"https://ror.org/022wqqf69","country_code":"ES","type":"nonprofit","lineage":["https://openalex.org/I170828890"]},{"id":"https://openalex.org/I88155538","display_name":"Universidad de Navarra","ror":"https://ror.org/02rxc7m23","country_code":"ES","type":"education","lineage":["https://openalex.org/I88155538"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"Pedro M. Crespo","raw_affiliation_strings":["CEIT and TECNUN (University of Navarra), Donostia-San-Sebastian, Spain","CEIT and TECNUN (University of Navarra), 20009 Donostia-San Sebastian, Spain"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"CEIT and TECNUN (University of Navarra), Donostia-San-Sebastian, Spain","institution_ids":["https://openalex.org/I170828890","https://openalex.org/I88155538"]},{"raw_affiliation_string":"CEIT and TECNUN (University of Navarra), 20009 Donostia-San Sebastian, Spain","institution_ids":["https://openalex.org/I88155538"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5016732612","display_name":"Babak Hossein Khalaj","orcid":"https://orcid.org/0000-0002-9289-2338"},"institutions":[{"id":"https://openalex.org/I133529467","display_name":"Sharif University of Technology","ror":"https://ror.org/024c2fq17","country_code":"IR","type":"education","lineage":["https://openalex.org/I133529467"]}],"countries":["IR"],"is_corresponding":false,"raw_author_name":"Babak H. Khalaj","raw_affiliation_strings":["Sharif University of Technology, Tehran, Iran","Sharif University of Technology, 11365-8639 Tehran, Iran"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Sharif University of Technology, Tehran, Iran","institution_ids":["https://openalex.org/I133529467"]},{"raw_affiliation_string":"Sharif University of Technology, 11365-8639 Tehran, Iran","institution_ids":["https://openalex.org/I133529467"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":4,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":"6","issue":null,"first_page":"133","last_page":"138"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10796","display_name":"Cooperative Communication and Network Coding","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10796","display_name":"Cooperative Communication and Network Coding","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10964","display_name":"Wireless Communication Security Techniques","score":0.9994999766349792,"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/T11458","display_name":"Advanced Wireless Communication 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"}}],"keywords":[{"id":"https://openalex.org/keywords/relay","display_name":"Relay","score":0.891855001449585},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6594045162200928},{"id":"https://openalex.org/keywords/mimo","display_name":"MIMO","score":0.622842013835907},{"id":"https://openalex.org/keywords/relay-channel","display_name":"Relay channel","score":0.5991514921188354},{"id":"https://openalex.org/keywords/diversity-gain","display_name":"Diversity gain","score":0.5676115155220032},{"id":"https://openalex.org/keywords/diversity-scheme","display_name":"Diversity scheme","score":0.5564786791801453},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.5249423980712891},{"id":"https://openalex.org/keywords/transmission","display_name":"Transmission (telecommunications)","score":0.5171874761581421},{"id":"https://openalex.org/keywords/dual","display_name":"Dual (grammatical number)","score":0.4403127431869507},{"id":"https://openalex.org/keywords/topology","display_name":"Topology (electrical circuits)","score":0.43466025590896606},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.3602507710456848},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.3501613736152649},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.27759361267089844},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.24245008826255798},{"id":"https://openalex.org/keywords/orthogonal-frequency-division-multiplexing","display_name":"Orthogonal frequency-division multiplexing","score":0.1940155029296875},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.11195063591003418},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.10422390699386597}],"concepts":[{"id":"https://openalex.org/C2778156585","wikidata":"https://www.wikidata.org/wiki/Q174053","display_name":"Relay","level":3,"score":0.891855001449585},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6594045162200928},{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.622842013835907},{"id":"https://openalex.org/C46257984","wikidata":"https://www.wikidata.org/wiki/Q7310895","display_name":"Relay channel","level":4,"score":0.5991514921188354},{"id":"https://openalex.org/C164785522","wikidata":"https://www.wikidata.org/wiki/Q5283966","display_name":"Diversity gain","level":4,"score":0.5676115155220032},{"id":"https://openalex.org/C198746922","wikidata":"https://www.wikidata.org/wiki/Q1230593","display_name":"Diversity scheme","level":4,"score":0.5564786791801453},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.5249423980712891},{"id":"https://openalex.org/C761482","wikidata":"https://www.wikidata.org/wiki/Q118093","display_name":"Transmission (telecommunications)","level":2,"score":0.5171874761581421},{"id":"https://openalex.org/C2780980858","wikidata":"https://www.wikidata.org/wiki/Q110022","display_name":"Dual (grammatical number)","level":2,"score":0.4403127431869507},{"id":"https://openalex.org/C184720557","wikidata":"https://www.wikidata.org/wiki/Q7825049","display_name":"Topology (electrical circuits)","level":2,"score":0.43466025590896606},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.3602507710456848},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.3501613736152649},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.27759361267089844},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.24245008826255798},{"id":"https://openalex.org/C40409654","wikidata":"https://www.wikidata.org/wiki/Q375889","display_name":"Orthogonal frequency-division multiplexing","level":3,"score":0.1940155029296875},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.11195063591003418},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.10422390699386597},{"id":"https://openalex.org/C163258240","wikidata":"https://www.wikidata.org/wiki/Q25342","display_name":"Power (physics)","level":2,"score":0.0},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C124952713","wikidata":"https://www.wikidata.org/wiki/Q8242","display_name":"Literature","level":1,"score":0.0},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.0},{"id":"https://openalex.org/C142362112","wikidata":"https://www.wikidata.org/wiki/Q735","display_name":"Art","level":0,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/wsa.2008.4475548","is_oa":false,"landing_page_url":"https://doi.org/10.1109/wsa.2008.4475548","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2008 International ITG Workshop on Smart Antennas","raw_type":"proceedings-article"},{"id":"pmh:oai:dsp.tecnalia.com:11556/8272","is_oa":false,"landing_page_url":"https://doi.org/10.1109/WSA.2008.4475548","pdf_url":null,"source":{"id":"https://openalex.org/S4306402037","display_name":"TECNALIA Publications (Fundaci\u00f3n TECNALIA Research & Innovation)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I4210113430","host_organization_name":"Tecnalia","host_organization_lineage":["https://openalex.org/I4210113430"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"acceptedVersion","is_accepted":true,"is_published":false,"raw_source_name":null,"raw_type":"conference output"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":8,"referenced_works":["https://openalex.org/W2133271389","https://openalex.org/W2138783157","https://openalex.org/W2142521365","https://openalex.org/W2148457751","https://openalex.org/W2151865945","https://openalex.org/W2165577519","https://openalex.org/W2168925234","https://openalex.org/W3147028311"],"related_works":["https://openalex.org/W2608897767","https://openalex.org/W2153829573","https://openalex.org/W2099376255","https://openalex.org/W2963768675","https://openalex.org/W2004047158","https://openalex.org/W2119153672","https://openalex.org/W2993015344","https://openalex.org/W1559320887","https://openalex.org/W2374704553","https://openalex.org/W2081779132"],"abstract_inverted_index":{"We":[0],"consider":[1],"the":[2,19,60,67,72,99,102,123,126,135,141,145,155,170,176,181],"non-cooperative":[3],"multiple":[4],"access":[5],"relay":[6,68,111,146,177],"channel,":[7],"where":[8,101],"N":[9,26],"users":[10,65],"transmit":[11,61],"their":[12],"information":[13],"to":[14,74,86,93,98,180],"a":[15,22,75,108,115],"common":[16],"receiver":[17],"with":[18,81],"assistance":[20],"of":[21,125,159],"shared":[23],"relay.":[24],"For":[25],"=":[27],"2":[28,76,78],"independent":[29],"sources":[30,103],"and":[31,113,138],"dual-frequency":[32,128],"operation":[33],"(i.e.":[34],"two":[35],"separate":[36],"frequency":[37,62],"channels":[38],"are":[39,104],"available":[40],"for":[41,154],"transmission),":[42],"it":[43],"has":[44],"been":[45],"recently":[46],"shown":[47],"[1,":[48,173],"2]":[49,174],"that":[50,122,166],"additional":[51],"diversity":[52,83],"gain":[53],"can":[54,130],"be":[55,131],"attained":[56],"by":[57,133],"simply":[58],"switching":[59],"bands":[63],"between":[64],"at":[66,144],"site,":[69],"thus":[70],"reducing":[71],"scenario":[73],"\u00d7":[77],"MIMO":[79],"channel":[80],"achievable":[82],"order":[84],"equal":[85],"2.":[87],"In":[88,148],"this":[89,95],"paper":[90],"we":[91,120,150],"propose":[92],"extend":[94],"previous":[96],"work":[97],"case":[100],"spatially":[105],"correlated.":[106],"Under":[107],"Detect-and-Forward":[109],"(DF)":[110],"approach,":[112],"using":[114],"Maximum":[116],"Likelihood":[117],"(ML)":[118],"detector,":[119],"show":[121,165],"performance":[124],"aforementioned":[127],"scheme":[129,171],"enhanced":[132],"preprocessing":[134],"detected":[136],"symbols":[137],"properly":[139],"designing":[140],"constellation":[142],"mapping":[143],"site.":[147],"addition,":[149],"derive":[151],"closed-form":[152],"expressions":[153],"symbol":[156],"error":[157],"probability":[158],"our":[160,167],"proposed":[161],"scheme.":[162],"Simulation":[163],"results":[164],"system":[168],"outperforms":[169],"in":[172],"when":[175],"is":[178],"close":[179],"sources.":[182]},"counts_by_year":[],"updated_date":"2026-07-14T23:27:15.235271","created_date":"2025-10-10T00:00:00"}