{"id":"https://openalex.org/W3001873489","doi":"https://doi.org/10.1109/twc.2020.2966968","title":"Semi-Blind Joint Timing-Offset and Channel Estimation for Amplify-and-Forward Two-Way Relaying","display_name":"Semi-Blind Joint Timing-Offset and Channel Estimation for Amplify-and-Forward Two-Way Relaying","publication_year":2020,"publication_date":"2020-01-22","ids":{"openalex":"https://openalex.org/W3001873489","doi":"https://doi.org/10.1109/twc.2020.2966968","mag":"3001873489"},"language":"en","primary_location":{"id":"doi:10.1109/twc.2020.2966968","is_oa":false,"landing_page_url":"https://doi.org/10.1109/twc.2020.2966968","pdf_url":null,"source":{"id":"https://openalex.org/S63459445","display_name":"IEEE Transactions on Wireless Communications","issn_l":"1536-1276","issn":["1536-1276","1558-2248"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Transactions on Wireless Communications","raw_type":"journal-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/A5028383205","display_name":"Saeed Abdallah","orcid":"https://orcid.org/0000-0002-6174-4770"},"institutions":[{"id":"https://openalex.org/I29891158","display_name":"University of Sharjah","ror":"https://ror.org/00engpz63","country_code":"AE","type":"education","lineage":["https://openalex.org/I29891158"]}],"countries":["AE"],"is_corresponding":false,"raw_author_name":"Saeed Abdallah","raw_affiliation_strings":["Department of Electrical Engineering, University of Sharjah, Sharjah, UAE"],"raw_orcid":"https://orcid.org/0000-0002-6174-4770","affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering, University of Sharjah, Sharjah, UAE","institution_ids":["https://openalex.org/I29891158"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101535364","display_name":"Mohamed Saad","orcid":"https://orcid.org/0000-0003-2546-4453"},"institutions":[{"id":"https://openalex.org/I29891158","display_name":"University of Sharjah","ror":"https://ror.org/00engpz63","country_code":"AE","type":"education","lineage":["https://openalex.org/I29891158"]}],"countries":["AE"],"is_corresponding":false,"raw_author_name":"Mohamed Saad","raw_affiliation_strings":["Department of Computer Engineering, University of Sharjah, Sharjah, UAE"],"raw_orcid":"https://orcid.org/0000-0003-2546-4453","affiliations":[{"raw_affiliation_string":"Department of Computer Engineering, University of Sharjah, Sharjah, UAE","institution_ids":["https://openalex.org/I29891158"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5086105087","display_name":"Khawla A. Alnajjar","orcid":"https://orcid.org/0000-0002-4218-9687"},"institutions":[{"id":"https://openalex.org/I29891158","display_name":"University of Sharjah","ror":"https://ror.org/00engpz63","country_code":"AE","type":"education","lineage":["https://openalex.org/I29891158"]}],"countries":["AE"],"is_corresponding":false,"raw_author_name":"Khawla Alnajjar","raw_affiliation_strings":["Department of Electrical Engineering, University of Sharjah, Sharjah, UAE"],"raw_orcid":"https://orcid.org/0000-0002-4218-9687","affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering, University of Sharjah, Sharjah, UAE","institution_ids":["https://openalex.org/I29891158"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5000165797","display_name":"Mudassir Masood","orcid":"https://orcid.org/0000-0003-0462-7874"},"institutions":[{"id":"https://openalex.org/I134085113","display_name":"King Fahd University of Petroleum and Minerals","ror":"https://ror.org/03yez3163","country_code":"SA","type":"education","lineage":["https://openalex.org/I134085113"]}],"countries":["SA"],"is_corresponding":false,"raw_author_name":"Mudassir Masood","raw_affiliation_strings":["Department of Electrical Engineering, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia","institution_ids":["https://openalex.org/I134085113"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":1.8546,"has_fulltext":false,"cited_by_count":17,"citation_normalized_percentile":{"value":0.86071423,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":93,"max":98},"biblio":{"volume":"19","issue":"4","first_page":"2613","last_page":"2627"},"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/T12791","display_name":"Full-Duplex Wireless Communications","score":0.9995999932289124,"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":0.9925000071525574,"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":0.7000642418861389},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.6627192497253418},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5598750114440918},{"id":"https://openalex.org/keywords/computational-complexity-theory","display_name":"Computational complexity theory","score":0.5317351222038269},{"id":"https://openalex.org/keywords/expectation\u2013maximization-algorithm","display_name":"Expectation\u2013maximization algorithm","score":0.5012640953063965},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.45397260785102844},{"id":"https://openalex.org/keywords/estimation-theory","display_name":"Estimation theory","score":0.4219251275062561},{"id":"https://openalex.org/keywords/blind-equalization","display_name":"Blind equalization","score":0.4111833870410919},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.3705233931541443},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.340983510017395},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.2945006191730499},{"id":"https://openalex.org/keywords/maximum-likelihood","display_name":"Maximum likelihood","score":0.2827474772930145},{"id":"https://openalex.org/keywords/equalization","display_name":"Equalization (audio)","score":0.2186703383922577},{"id":"https://openalex.org/keywords/decoding-methods","display_name":"Decoding methods","score":0.19552341103553772},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.145199716091156}],"concepts":[{"id":"https://openalex.org/C185429906","wikidata":"https://www.wikidata.org/wiki/Q1130160","display_name":"Estimator","level":2,"score":0.7000642418861389},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.6627192497253418},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5598750114440918},{"id":"https://openalex.org/C179799912","wikidata":"https://www.wikidata.org/wiki/Q205084","display_name":"Computational complexity theory","level":2,"score":0.5317351222038269},{"id":"https://openalex.org/C182081679","wikidata":"https://www.wikidata.org/wiki/Q1275153","display_name":"Expectation\u2013maximization algorithm","level":3,"score":0.5012640953063965},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.45397260785102844},{"id":"https://openalex.org/C167928553","wikidata":"https://www.wikidata.org/wiki/Q1376021","display_name":"Estimation theory","level":2,"score":0.4219251275062561},{"id":"https://openalex.org/C41425797","wikidata":"https://www.wikidata.org/wiki/Q4926640","display_name":"Blind equalization","level":4,"score":0.4111833870410919},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.3705233931541443},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.340983510017395},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.2945006191730499},{"id":"https://openalex.org/C49781872","wikidata":"https://www.wikidata.org/wiki/Q1045555","display_name":"Maximum likelihood","level":2,"score":0.2827474772930145},{"id":"https://openalex.org/C75755367","wikidata":"https://www.wikidata.org/wiki/Q104531076","display_name":"Equalization (audio)","level":3,"score":0.2186703383922577},{"id":"https://openalex.org/C57273362","wikidata":"https://www.wikidata.org/wiki/Q576722","display_name":"Decoding methods","level":2,"score":0.19552341103553772},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.145199716091156}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/twc.2020.2966968","is_oa":false,"landing_page_url":"https://doi.org/10.1109/twc.2020.2966968","pdf_url":null,"source":{"id":"https://openalex.org/S63459445","display_name":"IEEE Transactions on Wireless Communications","issn_l":"1536-1276","issn":["1536-1276","1558-2248"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Transactions on Wireless Communications","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":35,"referenced_works":["https://openalex.org/W250076511","https://openalex.org/W1585633146","https://openalex.org/W1899517412","https://openalex.org/W1963940017","https://openalex.org/W1982754822","https://openalex.org/W1991932057","https://openalex.org/W2003073152","https://openalex.org/W2021089860","https://openalex.org/W2022248843","https://openalex.org/W2026324706","https://openalex.org/W2035192917","https://openalex.org/W2052074965","https://openalex.org/W2061008968","https://openalex.org/W2064187424","https://openalex.org/W2065602162","https://openalex.org/W2113591193","https://openalex.org/W2143005940","https://openalex.org/W2143365251","https://openalex.org/W2152190062","https://openalex.org/W2170723242","https://openalex.org/W2293307565","https://openalex.org/W2322575721","https://openalex.org/W2343690297","https://openalex.org/W2403256519","https://openalex.org/W2418033101","https://openalex.org/W2566271717","https://openalex.org/W2581339759","https://openalex.org/W2616158727","https://openalex.org/W2621310776","https://openalex.org/W2733414651","https://openalex.org/W2752991092","https://openalex.org/W2802230519","https://openalex.org/W2947604825","https://openalex.org/W3008249475","https://openalex.org/W6639675185"],"related_works":["https://openalex.org/W2521737159","https://openalex.org/W3162243863","https://openalex.org/W2907934943","https://openalex.org/W2121013772","https://openalex.org/W3209093869","https://openalex.org/W2111055833","https://openalex.org/W1906334979","https://openalex.org/W2367260263","https://openalex.org/W2122958477","https://openalex.org/W2106362003"],"abstract_inverted_index":{"In":[0],"this":[1],"paper,":[2],"we":[3,49,134,174],"consider":[4,175],"the":[5,31,67,82,87,102,108,128,137,156,168,176],"problem":[6,21],"of":[7,70,127,170,178],"joint":[8,54],"timing-offset":[9,55],"and":[10,37,41,56,151,183,186],"channel":[11,57],"estimation":[12,43,182],"for":[13,24,167,194],"amplify-and-forward":[14],"(AF)":[15],"two-way":[16],"relay":[17],"networks":[18],"(TWRNs).":[19],"This":[20],"is":[22,121,165],"solved":[23],"generic":[25],"pulse-shaping":[26],"filters,":[27],"taking":[28],"into":[29],"account":[30],"filter":[32],"truncation":[33],"in":[34,180],"practical":[35],"communication":[36],"considering":[38],"both":[39],"pilot-based":[40,47,144,185],"semi-blind":[42,98,119,138,157,187],"strategies.":[44],"Beginning":[45],"with":[46,81],"estimation,":[48,145],"propose":[50,184],"a":[51,97,160],"novel":[52],"Maximum-likelihood":[53],"estimator,":[58],"as":[59,61,124,146,148],"well":[60,147],"an":[62,125],"alternative":[63],"estimator":[64,99],"based":[65,100],"on":[66,101],"special":[68],"properties":[69],"Zadoff-Chu":[71],"sequences.":[72],"The":[73,118],"first":[74],"algorithm":[75,139,164],"offers":[76,89],"high":[77],"accuracy,":[78],"almost":[79],"overlapping":[80],"Cramer-Rao":[83],"bound":[84],"(CRB),":[85],"while":[86],"second":[88],"very":[90,153],"low":[91],"computational":[92],"complexity.":[93],"We":[94],"then":[95],"develop":[96],"expectation":[103],"maximization":[104],"(EM)":[105],"framework,":[106],"exploiting":[107],"underlying":[109],"Hidden":[110],"Markov":[111],"Model":[112],"to":[113,143,155],"apply":[114],"Baum-Welch":[115],"forward-backward":[116],"recursion.":[117],"CRB":[120],"also":[122],"obtained":[123],"indicator":[126],"best":[129],"achievable":[130],"performance.":[131],"Using":[132],"simulations,":[133],"show":[135],"that":[136],"yields":[140],"superior":[141],"accuracy":[142],"improved":[149],"symbol-error-rates":[150],"performs":[152],"close":[154],"CRB.":[158],"Additionally,":[159],"low-complexity":[161],"approximate":[162],"EM":[163],"proposed":[166],"case":[169],"rectangular":[171],"pulses.":[172],"Finally,":[173],"possibility":[177],"errors":[179],"integer-offset":[181],"generalized":[188],"likelihood":[189],"ratio":[190],"test":[191],"(GLRT)":[192],"schemes":[193],"correcting":[195],"such":[196],"errors.":[197]},"counts_by_year":[{"year":2026,"cited_by_count":2},{"year":2024,"cited_by_count":3},{"year":2023,"cited_by_count":4},{"year":2022,"cited_by_count":2},{"year":2021,"cited_by_count":2},{"year":2020,"cited_by_count":4}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}