{"id":"https://openalex.org/W3120875796","doi":"https://doi.org/10.1109/twc.2022.3158616","title":"Off-Grid Channel Estimation With Sparse Bayesian Learning for OTFS Systems","display_name":"Off-Grid Channel Estimation With Sparse Bayesian Learning for OTFS Systems","publication_year":2022,"publication_date":"2022-03-19","ids":{"openalex":"https://openalex.org/W3120875796","doi":"https://doi.org/10.1109/twc.2022.3158616","mag":"3120875796"},"language":"en","primary_location":{"id":"doi:10.1109/twc.2022.3158616","is_oa":false,"landing_page_url":"https://doi.org/10.1109/twc.2022.3158616","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/A5074077175","display_name":"Zhiqiang Wei","orcid":"https://orcid.org/0000-0003-3400-5590"},"institutions":[{"id":"https://openalex.org/I181369854","display_name":"Friedrich-Alexander-Universit\u00e4t Erlangen-N\u00fcrnberg","ror":"https://ror.org/00f7hpc57","country_code":"DE","type":"education","lineage":["https://openalex.org/I181369854"]},{"id":"https://openalex.org/I31746571","display_name":"UNSW Sydney","ror":"https://ror.org/03r8z3t63","country_code":"AU","type":"education","lineage":["https://openalex.org/I31746571"]}],"countries":["AU","DE"],"is_corresponding":false,"raw_author_name":"Zhiqiang Wei","raw_affiliation_strings":["School of Electrical Engineering and Telecommunications, University of New South Wales, Sydney, NSW, Australia","Institute for Digital Communications (IDC), Friedrich-Alexander University Erlangen-Nuremberg, Erlangen, Germany"],"raw_orcid":"https://orcid.org/0000-0003-3400-5590","affiliations":[{"raw_affiliation_string":"School of Electrical Engineering and Telecommunications, University of New South Wales, Sydney, NSW, Australia","institution_ids":["https://openalex.org/I31746571"]},{"raw_affiliation_string":"Institute for Digital Communications (IDC), Friedrich-Alexander University Erlangen-Nuremberg, Erlangen, Germany","institution_ids":["https://openalex.org/I181369854"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5011236120","display_name":"Weijie Yuan","orcid":"https://orcid.org/0000-0002-2158-0046"},"institutions":[{"id":"https://openalex.org/I3045169105","display_name":"Southern University of Science and Technology","ror":"https://ror.org/049tv2d57","country_code":"CN","type":"education","lineage":["https://openalex.org/I3045169105"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Weijie Yuan","raw_affiliation_strings":["Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, China"],"raw_orcid":"https://orcid.org/0000-0002-2158-0046","affiliations":[{"raw_affiliation_string":"Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen, China","institution_ids":["https://openalex.org/I3045169105"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5045823074","display_name":"Shuangyang Li","orcid":"https://orcid.org/0000-0002-9503-4865"},"institutions":[{"id":"https://openalex.org/I31746571","display_name":"UNSW Sydney","ror":"https://ror.org/03r8z3t63","country_code":"AU","type":"education","lineage":["https://openalex.org/I31746571"]}],"countries":["AU"],"is_corresponding":false,"raw_author_name":"Shuangyang Li","raw_affiliation_strings":["School of Electrical Engineering and Telecommunications, University of New South Wales, Sydney, NSW, Australia"],"raw_orcid":"https://orcid.org/0000-0002-9503-4865","affiliations":[{"raw_affiliation_string":"School of Electrical Engineering and Telecommunications, University of New South Wales, Sydney, NSW, Australia","institution_ids":["https://openalex.org/I31746571"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5091837980","display_name":"Jinhong Yuan","orcid":"https://orcid.org/0000-0002-5794-493X"},"institutions":[{"id":"https://openalex.org/I31746571","display_name":"UNSW Sydney","ror":"https://ror.org/03r8z3t63","country_code":"AU","type":"education","lineage":["https://openalex.org/I31746571"]}],"countries":["AU"],"is_corresponding":false,"raw_author_name":"Jinhong Yuan","raw_affiliation_strings":["School of Electrical Engineering and Telecommunications, University of New South Wales, Sydney, NSW, Australia"],"raw_orcid":"https://orcid.org/0000-0002-5794-493X","affiliations":[{"raw_affiliation_string":"School of Electrical Engineering and Telecommunications, University of New South Wales, Sydney, NSW, Australia","institution_ids":["https://openalex.org/I31746571"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5006080984","display_name":"Derrick Wing Kwan Ng","orcid":"https://orcid.org/0000-0001-6400-712X"},"institutions":[{"id":"https://openalex.org/I31746571","display_name":"UNSW Sydney","ror":"https://ror.org/03r8z3t63","country_code":"AU","type":"education","lineage":["https://openalex.org/I31746571"]}],"countries":["AU"],"is_corresponding":false,"raw_author_name":"Derrick Wing Kwan Ng","raw_affiliation_strings":["School of Electrical Engineering and Telecommunications, University of New South Wales, Sydney, NSW, Australia"],"raw_orcid":"https://orcid.org/0000-0001-6400-712X","affiliations":[{"raw_affiliation_string":"School of Electrical Engineering and Telecommunications, University of New South Wales, Sydney, NSW, Australia","institution_ids":["https://openalex.org/I31746571"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":16.1448,"has_fulltext":false,"cited_by_count":233,"citation_normalized_percentile":{"value":0.99698814,"is_in_top_1_percent":true,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":97,"max":100},"biblio":{"volume":"21","issue":"9","first_page":"7407","last_page":"7426"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11873","display_name":"PAPR reduction in OFDM","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/T11873","display_name":"PAPR reduction in OFDM","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/T10688","display_name":"Image and Signal Denoising Methods","score":0.9958999752998352,"subfield":{"id":"https://openalex.org/subfields/1707","display_name":"Computer Vision and Pattern Recognition"},"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/T11233","display_name":"Advanced Adaptive Filtering Techniques","score":0.9940999746322632,"subfield":{"id":"https://openalex.org/subfields/2206","display_name":"Computational Mechanics"},"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/grid","display_name":"Grid","score":0.6641190052032471},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.6530085206031799},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6409587264060974},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.6161879897117615},{"id":"https://openalex.org/keywords/computational-complexity-theory","display_name":"Computational complexity theory","score":0.504266619682312},{"id":"https://openalex.org/keywords/doppler-effect","display_name":"Doppler effect","score":0.4871980547904968},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.2648349106311798},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.145946204662323}],"concepts":[{"id":"https://openalex.org/C187691185","wikidata":"https://www.wikidata.org/wiki/Q2020720","display_name":"Grid","level":2,"score":0.6641190052032471},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.6530085206031799},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6409587264060974},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.6161879897117615},{"id":"https://openalex.org/C179799912","wikidata":"https://www.wikidata.org/wiki/Q205084","display_name":"Computational complexity theory","level":2,"score":0.504266619682312},{"id":"https://openalex.org/C142757262","wikidata":"https://www.wikidata.org/wiki/Q76436","display_name":"Doppler effect","level":2,"score":0.4871980547904968},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.2648349106311798},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.145946204662323},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","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},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/twc.2022.3158616","is_oa":false,"landing_page_url":"https://doi.org/10.1109/twc.2022.3158616","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":[{"id":"https://openalex.org/G2574349962","display_name":null,"funder_award_id":"62101232","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G4623539362","display_name":"Low-Complexity Capacity-Scalable Multiple Antenna Wireless Communications","funder_award_id":"LP200301482","funder_id":"https://openalex.org/F4320334704","funder_display_name":"Australian Research Council"},{"id":"https://openalex.org/G5952740038","display_name":"Drone-based Communications for High-speed Beyond 5G Wireless Systems","funder_award_id":"DP210102169","funder_id":"https://openalex.org/F4320334704","funder_display_name":"Australian Research Council"},{"id":"https://openalex.org/G6491798724","display_name":"Orthogonal Time Frequency Space Modulation for Future Mobile Communications","funder_award_id":"DP220103596","funder_id":"https://openalex.org/F4320334704","funder_display_name":"Australian Research Council"}],"funders":[{"id":"https://openalex.org/F4320308269","display_name":"Alexander von Humboldt-Stiftung","ror":"https://ror.org/012kf4317"},{"id":"https://openalex.org/F4320320965","display_name":"University of New South Wales","ror":"https://ror.org/03r8z3t63"},{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"},{"id":"https://openalex.org/F4320334704","display_name":"Australian Research Council","ror":"https://ror.org/05mmh0f86"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":36,"referenced_works":["https://openalex.org/W250076511","https://openalex.org/W588135687","https://openalex.org/W1907710130","https://openalex.org/W1985690171","https://openalex.org/W2028823365","https://openalex.org/W2065513175","https://openalex.org/W2096282089","https://openalex.org/W2137628444","https://openalex.org/W2164452299","https://openalex.org/W2612254130","https://openalex.org/W2753333094","https://openalex.org/W2888002205","https://openalex.org/W2897653591","https://openalex.org/W2950013137","https://openalex.org/W2962951066","https://openalex.org/W2963817362","https://openalex.org/W2963986627","https://openalex.org/W3013931734","https://openalex.org/W3022137255","https://openalex.org/W3034448035","https://openalex.org/W3039124949","https://openalex.org/W3082571270","https://openalex.org/W3082907477","https://openalex.org/W3091820151","https://openalex.org/W3094134028","https://openalex.org/W3128040705","https://openalex.org/W3128605099","https://openalex.org/W3135300342","https://openalex.org/W3154139020","https://openalex.org/W3160738540","https://openalex.org/W3164364176","https://openalex.org/W3169454332","https://openalex.org/W3179436782","https://openalex.org/W3189209457","https://openalex.org/W3200797369","https://openalex.org/W4210820333"],"related_works":["https://openalex.org/W2051487156","https://openalex.org/W2073681303","https://openalex.org/W2053286651","https://openalex.org/W2181743346","https://openalex.org/W2187401768","https://openalex.org/W2181413294","https://openalex.org/W2989452537","https://openalex.org/W2052122378","https://openalex.org/W2544423928","https://openalex.org/W2189341500"],"abstract_inverted_index":{"This":[0],"paper":[1],"proposes":[2],"an":[3],"off-grid":[4,77,98,139,175,192],"channel":[5,23,38,51,59,68,163,194,252],"estimation":[6,69,164,195,253],"scheme":[7],"for":[8,108,202],"orthogonal":[9],"time-frequency":[10],"space":[11],"(OTFS)":[12],"systems":[13],"adopting":[14],"the":[15,27,37,41,47,55,65,91,95,101,112,116,125,132,137,146,155,180,197,204,216,223,226,246,250],"sparse":[16,78,134],"Bayesian":[17],"learning":[18],"(SBL)":[19],"framework.":[20],"To":[21,158],"avoid":[22],"spreading":[24],"caused":[25],"by":[26,124],"fractional":[28],"delay":[29,102,117,181],"and":[30,33,97,103,118,166,182,190],"Doppler":[31,104,119,183],"shifts":[32,105,120],"to":[34,214],"fully":[35],"exploit":[36],"sparsity":[39],"in":[40,64,90,131,145],"delay-Doppler":[42],"(DD)":[43],"domain,":[44],"we":[45,169],"estimate":[46],"original":[48],"DD":[49,57,92,218],"domain":[50,58,219],"response":[52,60],"rather":[53],"than":[54],"effective":[56,217],"as":[61,73,143],"commonly":[62],"adopted":[63],"literature.":[66],"OTFS":[67],"is":[70],"firstly":[71],"formulated":[72],"a":[74,85,160,172,231,239],"one-dimensional":[75],"(1D)":[76],"signal":[79],"recovery":[80],"(SSR)":[81],"problem":[82,177],"based":[83],"on":[84],"virtual":[86],"sampling":[87],"grid":[88],"defined":[89],"space,":[93],"where":[94],"on-grid":[96,113],"components":[99,114,140],"of":[100,115,208,249],"are":[106,121,141,199],"separated":[107],"estimation.":[109],"In":[110,186],"particular,":[111],"jointly":[122],"determined":[123],"entry":[126],"indices":[127],"with":[128,222],"significant":[129],"values":[130],"recovered":[133],"vector.":[135],"Then,":[136],"corresponding":[138],"modeled":[142],"hyper-parameters":[144,198],"proposed":[147,227,251],"SBL":[148],"framework,":[149],"which":[150,210],"can":[151,211],"be":[152,212],"estimated":[153],"via":[154,178],"expectation-maximization":[156],"method.":[157],"strike":[159],"balance":[161],"between":[162],"performance":[165,241,248],"computational":[167,234],"complexity,":[168],"further":[170],"propose":[171],"two-dimensional":[173],"(2D)":[174],"SSR":[176],"decoupling":[179],"shift":[184],"estimations.":[185],"our":[187],"developed":[188],"1D":[189,224],"2D":[191,228],"SBL-based":[193],"algorithms,":[196],"updated":[200],"alternatively":[201],"computing":[203],"conditional":[205],"posterior":[206],"distribution":[207],"channels,":[209],"exploited":[213],"reconstruct":[215],"channel.":[220],"Compared":[221],"method,":[225],"method":[229],"enjoys":[230],"much":[232],"lower":[233],"complexity":[235],"while":[236],"only":[237],"suffers":[238],"slight":[240],"degradation.":[242],"Simulation":[243],"results":[244],"verify":[245],"superior":[247],"schemes":[254],"over":[255],"state-of-the-art":[256],"schemes.":[257]},"counts_by_year":[{"year":2026,"cited_by_count":11},{"year":2025,"cited_by_count":91},{"year":2024,"cited_by_count":64},{"year":2023,"cited_by_count":46},{"year":2022,"cited_by_count":16},{"year":2021,"cited_by_count":5}],"updated_date":"2026-07-17T09:13:05.818461","created_date":"2025-10-10T00:00:00"}
