{"id":"https://openalex.org/W2073296819","doi":"https://doi.org/10.1109/iswcs.2011.6125316","title":"EM-based joint time delay and channel estimation for cooperative communications","display_name":"EM-based joint time delay and channel estimation for cooperative communications","publication_year":2011,"publication_date":"2011-11-01","ids":{"openalex":"https://openalex.org/W2073296819","doi":"https://doi.org/10.1109/iswcs.2011.6125316","mag":"2073296819"},"language":"en","primary_location":{"id":"doi:10.1109/iswcs.2011.6125316","is_oa":false,"landing_page_url":"https://doi.org/10.1109/iswcs.2011.6125316","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2011 8th International Symposium on Wireless Communication Systems","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/A5066766218","display_name":"Serkan Ak","orcid":null},"institutions":[{"id":"https://openalex.org/I67581229","display_name":"Istanbul University","ror":"https://ror.org/03a5qrr21","country_code":"TR","type":"education","lineage":["https://openalex.org/I67581229"]}],"countries":["TR"],"is_corresponding":true,"raw_author_name":"Serkan Ak","raw_affiliation_strings":["Department of Electrical and Electronics Engineering, Istanbul University, Avcilar, Istanbul, Turkey","Dept. of Electrical and Electronics Eng. Istanbul University, 34320, Avcilar Istanbul, Turkey"],"affiliations":[{"raw_affiliation_string":"Department of Electrical and Electronics Engineering, Istanbul University, Avcilar, Istanbul, Turkey","institution_ids":["https://openalex.org/I67581229"]},{"raw_affiliation_string":"Dept. of Electrical and Electronics Eng. Istanbul University, 34320, Avcilar Istanbul, Turkey","institution_ids":["https://openalex.org/I67581229"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5038785474","display_name":"Niyazi Odaba\u015f\u0131o\u011flu","orcid":null},"institutions":[{"id":"https://openalex.org/I67581229","display_name":"Istanbul University","ror":"https://ror.org/03a5qrr21","country_code":"TR","type":"education","lineage":["https://openalex.org/I67581229"]}],"countries":["TR"],"is_corresponding":false,"raw_author_name":"Niyazi Odabasioglu","raw_affiliation_strings":["Department of Electrical and Electronics Engineering, Istanbul University, Avcilar, Istanbul, Turkey","Dept. of Electrical and Electronics Eng. Istanbul University, 34320, Avcilar Istanbul, Turkey"],"affiliations":[{"raw_affiliation_string":"Department of Electrical and Electronics Engineering, Istanbul University, Avcilar, Istanbul, Turkey","institution_ids":["https://openalex.org/I67581229"]},{"raw_affiliation_string":"Dept. of Electrical and Electronics Eng. Istanbul University, 34320, Avcilar Istanbul, Turkey","institution_ids":["https://openalex.org/I67581229"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5018973008","display_name":"Murat Uysal","orcid":"https://orcid.org/0000-0001-5945-0813"},"institutions":[{"id":"https://openalex.org/I44925452","display_name":"\u00d6zye\u011fin University","ror":"https://ror.org/01jjhfr75","country_code":"TR","type":"education","lineage":["https://openalex.org/I44925452"]}],"countries":["TR"],"is_corresponding":false,"raw_author_name":"Murat Uysal","raw_affiliation_strings":["Faculty of Engineering, O zyegin University, Altunizade, Istanbul, Turkey","Faculty of Engineering, Ozye\u011fin University, 34662, Altunizade, Istanbul, Turkey"],"affiliations":[{"raw_affiliation_string":"Faculty of Engineering, O zyegin University, Altunizade, Istanbul, Turkey","institution_ids":["https://openalex.org/I44925452"]},{"raw_affiliation_string":"Faculty of Engineering, Ozye\u011fin University, 34662, Altunizade, Istanbul, Turkey","institution_ids":["https://openalex.org/I44925452"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5066766218"],"corresponding_institution_ids":["https://openalex.org/I67581229"],"apc_list":null,"apc_paid":null,"fwci":0.3696,"has_fulltext":false,"cited_by_count":3,"citation_normalized_percentile":{"value":0.64815676,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":94},"biblio":{"volume":"3","issue":null,"first_page":"91","last_page":"95"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10796","display_name":"Cooperative Communication and Network Coding","score":1.0,"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":1.0,"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/T12791","display_name":"Full-Duplex Wireless Communications","score":0.9987000226974487,"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/T10964","display_name":"Wireless Communication Security Techniques","score":0.9983999729156494,"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/estimator","display_name":"Estimator","score":0.7827211618423462},{"id":"https://openalex.org/keywords/fading","display_name":"Fading","score":0.6973336338996887},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.6760810613632202},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6542771458625793},{"id":"https://openalex.org/keywords/joint","display_name":"Joint (building)","score":0.630336344242096},{"id":"https://openalex.org/keywords/maximization","display_name":"Maximization","score":0.5668365955352783},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.5152049660682678},{"id":"https://openalex.org/keywords/bit-error-rate","display_name":"Bit error rate","score":0.5002658367156982},{"id":"https://openalex.org/keywords/maximum-likelihood","display_name":"Maximum likelihood","score":0.45449793338775635},{"id":"https://openalex.org/keywords/expectation\u2013maximization-algorithm","display_name":"Expectation\u2013maximization algorithm","score":0.4431009888648987},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.3764404356479645},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.2618959844112396},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.2553258538246155},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.2547658085823059},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.11386960744857788}],"concepts":[{"id":"https://openalex.org/C185429906","wikidata":"https://www.wikidata.org/wiki/Q1130160","display_name":"Estimator","level":2,"score":0.7827211618423462},{"id":"https://openalex.org/C81978471","wikidata":"https://www.wikidata.org/wiki/Q1196572","display_name":"Fading","level":3,"score":0.6973336338996887},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.6760810613632202},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6542771458625793},{"id":"https://openalex.org/C18555067","wikidata":"https://www.wikidata.org/wiki/Q8375051","display_name":"Joint (building)","level":2,"score":0.630336344242096},{"id":"https://openalex.org/C2776330181","wikidata":"https://www.wikidata.org/wiki/Q18358244","display_name":"Maximization","level":2,"score":0.5668365955352783},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.5152049660682678},{"id":"https://openalex.org/C56296756","wikidata":"https://www.wikidata.org/wiki/Q840922","display_name":"Bit error rate","level":3,"score":0.5002658367156982},{"id":"https://openalex.org/C49781872","wikidata":"https://www.wikidata.org/wiki/Q1045555","display_name":"Maximum likelihood","level":2,"score":0.45449793338775635},{"id":"https://openalex.org/C182081679","wikidata":"https://www.wikidata.org/wiki/Q1275153","display_name":"Expectation\u2013maximization algorithm","level":3,"score":0.4431009888648987},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.3764404356479645},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.2618959844112396},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.2553258538246155},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.2547658085823059},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.11386960744857788},{"id":"https://openalex.org/C170154142","wikidata":"https://www.wikidata.org/wiki/Q150737","display_name":"Architectural engineering","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/iswcs.2011.6125316","is_oa":false,"landing_page_url":"https://doi.org/10.1109/iswcs.2011.6125316","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2011 8th International Symposium on Wireless Communication Systems","raw_type":"proceedings-article"},{"id":"pmh:oai:eresearch.ozyegin.edu.tr:10679/2431","is_oa":false,"landing_page_url":"http://hdl.handle.net/10679/2431","pdf_url":null,"source":{"id":"https://openalex.org/S4306400232","display_name":"ECS Journal of Solid State Science and Technology (The Electrochemical Society)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I2802273670","host_organization_name":"Electrochemical Society","host_organization_lineage":["https://openalex.org/I2802273670"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Conference paper"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Partnerships for the goals","score":0.4000000059604645,"id":"https://metadata.un.org/sdg/17"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":33,"referenced_works":["https://openalex.org/W22078568","https://openalex.org/W1987058923","https://openalex.org/W2006041766","https://openalex.org/W2026898705","https://openalex.org/W2026956576","https://openalex.org/W2049633694","https://openalex.org/W2100211118","https://openalex.org/W2102164324","https://openalex.org/W2108264279","https://openalex.org/W2108485037","https://openalex.org/W2111055833","https://openalex.org/W2112288324","https://openalex.org/W2114208678","https://openalex.org/W2114811723","https://openalex.org/W2124033256","https://openalex.org/W2125619366","https://openalex.org/W2136379375","https://openalex.org/W2145469294","https://openalex.org/W2149287269","https://openalex.org/W2152121970","https://openalex.org/W2157269574","https://openalex.org/W2160738569","https://openalex.org/W2161850939","https://openalex.org/W2163599171","https://openalex.org/W2395596874","https://openalex.org/W2414400845","https://openalex.org/W2495701169","https://openalex.org/W2552534068","https://openalex.org/W4246762037","https://openalex.org/W4285719527","https://openalex.org/W6676604447","https://openalex.org/W6712085000","https://openalex.org/W6729295145"],"related_works":["https://openalex.org/W2133930609","https://openalex.org/W1978153144","https://openalex.org/W102848802","https://openalex.org/W1976188970","https://openalex.org/W2982058819","https://openalex.org/W2130734797","https://openalex.org/W3176361882","https://openalex.org/W2122958477","https://openalex.org/W2025556230","https://openalex.org/W2150061385"],"abstract_inverted_index":{"In":[0],"this":[1],"paper,":[2],"we":[3],"study":[4],"joint":[5,22],"time":[6,63],"delay":[7],"and":[8,30,65,86],"channel":[9],"estimation":[10],"for":[11,35],"a":[12,32,69],"cooperative":[13,50],"communication":[14],"system":[15,51],"with":[16],"amplify-and-forward":[17],"(AF)":[18],"relaying.":[19],"The":[20],"proposed":[21,49],"estimator":[23],"is":[24],"based":[25],"on":[26],"Expectation-Maximization":[27],"(EM)":[28],"algorithm":[29],"presents":[31],"low-complexity":[33],"solution":[34],"iterative":[36],"maximum":[37],"likelihood":[38],"(ML)":[39],"estimation.":[40],"Our":[41],"simulation":[42],"results":[43],"demonstrate":[44],"that":[45],"the":[46,56,80],"performance":[47],"of":[48,55,62,74,82],"lies":[52],"within":[53],"0.5dB":[54],"genie":[57],"bound":[58],"(i.e.,":[59],"perfect":[60],"knowledge":[61],"delays":[64],"fading":[66],"coefficients)":[67],"at":[68],"target":[70],"bit":[71],"error":[72],"rate":[73],"10":[75],"<sup":[76],"xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"":[77],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">-4</sup>":[78],"assuming":[79],"deployment":[81],"4":[83],"pilot":[84],"symbols":[85],"3":[87],"iterations.":[88]},"counts_by_year":[{"year":2024,"cited_by_count":1},{"year":2016,"cited_by_count":1},{"year":2013,"cited_by_count":1}],"updated_date":"2026-03-20T23:20:44.827607","created_date":"2025-10-10T00:00:00"}