{"id":"https://openalex.org/W7140086783","doi":"https://doi.org/10.1109/lwc.2026.3676443","title":"SS-CoSaMP-Based Channel Estimation for RIS-Assisted Multi-User Systems With Multi-Region User Distribution","display_name":"SS-CoSaMP-Based Channel Estimation for RIS-Assisted Multi-User Systems With Multi-Region User Distribution","publication_year":2026,"publication_date":"2026-01-01","ids":{"openalex":"https://openalex.org/W7140086783","doi":"https://doi.org/10.1109/lwc.2026.3676443"},"language":null,"primary_location":{"id":"doi:10.1109/lwc.2026.3676443","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lwc.2026.3676443","pdf_url":null,"source":{"id":"https://openalex.org/S2500830676","display_name":"IEEE Wireless Communications Letters","issn_l":"2162-2337","issn":["2162-2337","2162-2345"],"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 Wireless Communications Letters","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":null,"display_name":"Bin Qiu","orcid":"https://orcid.org/0000-0002-8523-7431"},"institutions":[{"id":"https://openalex.org/I38706770","display_name":"Guilin University of Technology","ror":"https://ror.org/03z391397","country_code":"CN","type":"education","lineage":["https://openalex.org/I38706770"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Bin Qiu","raw_affiliation_strings":["Guangxi Key Laboratory of Embedded Technology and Intelligent System, Guilin University of Technology, Guilin, China"],"raw_orcid":"https://orcid.org/0000-0002-8523-7431","affiliations":[{"raw_affiliation_string":"Guangxi Key Laboratory of Embedded Technology and Intelligent System, Guilin University of Technology, Guilin, China","institution_ids":["https://openalex.org/I38706770"]}]},{"author_position":"middle","author":{"id":null,"display_name":"Yang Xu","orcid":"https://orcid.org/0009-0008-1729-702X"},"institutions":[{"id":"https://openalex.org/I38706770","display_name":"Guilin University of Technology","ror":"https://ror.org/03z391397","country_code":"CN","type":"education","lineage":["https://openalex.org/I38706770"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yang Xu","raw_affiliation_strings":["School of Computer Science and Engineering, Guilin University of Technology, Guilin, China"],"raw_orcid":"https://orcid.org/0009-0008-1729-702X","affiliations":[{"raw_affiliation_string":"School of Computer Science and Engineering, Guilin University of Technology, Guilin, China","institution_ids":["https://openalex.org/I38706770"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5046508360","display_name":"Shuqi Xu","orcid":"https://orcid.org/0000-0001-9494-4077"},"institutions":[{"id":"https://openalex.org/I111950717","display_name":"Macau University of Science and Technology","ror":"https://ror.org/03jqs2n27","country_code":"MO","type":"education","lineage":["https://openalex.org/I111950717","https://openalex.org/I4391767947"]}],"countries":["MO"],"is_corresponding":false,"raw_author_name":"Shuqi Xu","raw_affiliation_strings":["School of Computer Science and Engineering, Macau University of Science and Technology, Macau, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Computer Science and Engineering, Macau University of Science and Technology, Macau, China","institution_ids":["https://openalex.org/I111950717"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5110754844","display_name":"Xiao Chang","orcid":null},"institutions":[{"id":"https://openalex.org/I38706770","display_name":"Guilin University of Technology","ror":"https://ror.org/03z391397","country_code":"CN","type":"education","lineage":["https://openalex.org/I38706770"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Xiao Chang","raw_affiliation_strings":["School of Computer Science and Engineering, Guilin University of Technology, Guilin, China"],"raw_orcid":"https://orcid.org/0009-0002-5903-6430","affiliations":[{"raw_affiliation_string":"School of Computer Science and Engineering, Guilin University of Technology, Guilin, China","institution_ids":["https://openalex.org/I38706770"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5130332701","display_name":"Zhongshan Zhang","orcid":null},"institutions":[{"id":"https://openalex.org/I125839683","display_name":"Beijing Institute of Technology","ror":"https://ror.org/01skt4w74","country_code":"CN","type":"education","lineage":["https://openalex.org/I125839683","https://openalex.org/I890469752"]},{"id":"https://openalex.org/I4210165204","display_name":"Zhuhai Institute of Advanced Technology","ror":"https://ror.org/05r1mzq61","country_code":"CN","type":"facility","lineage":["https://openalex.org/I19820366","https://openalex.org/I4210145761","https://openalex.org/I4210165204"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Zhongshan Zhang","raw_affiliation_strings":["School of Cyberspace Science and Technology, Beijing Institute of Technology, Zhuhai, China"],"raw_orcid":"https://orcid.org/0000-0001-6454-4689","affiliations":[{"raw_affiliation_string":"School of Cyberspace Science and Technology, Beijing Institute of Technology, Zhuhai, China","institution_ids":["https://openalex.org/I4210165204","https://openalex.org/I125839683"]}]},{"author_position":"middle","author":{"id":null,"display_name":"Jianqing Li","orcid":"https://orcid.org/0000-0002-6768-1483"},"institutions":[{"id":"https://openalex.org/I111950717","display_name":"Macau University of Science and Technology","ror":"https://ror.org/03jqs2n27","country_code":"MO","type":"education","lineage":["https://openalex.org/I111950717","https://openalex.org/I4391767947"]}],"countries":["MO"],"is_corresponding":false,"raw_author_name":"Jianqing Li","raw_affiliation_strings":["School of Computer Science and Engineering, Macau University of Science and Technology, Macau, China"],"raw_orcid":"https://orcid.org/0000-0002-6768-1483","affiliations":[{"raw_affiliation_string":"School of Computer Science and Engineering, Macau University of Science and Technology, Macau, China","institution_ids":["https://openalex.org/I111950717"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5006151427","display_name":"Z. Jeffrey Chen","orcid":"https://orcid.org/0000-0001-8018-9103"},"institutions":[{"id":"https://openalex.org/I159948400","display_name":"Jinan University","ror":"https://ror.org/02xe5ns62","country_code":"CN","type":"education","lineage":["https://openalex.org/I159948400"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Zhen Chen","raw_affiliation_strings":["College of Cyber Security, Jinan University, Guangzhou, China"],"raw_orcid":"https://orcid.org/0000-0001-8018-9103","affiliations":[{"raw_affiliation_string":"College of Cyber Security, Jinan University, Guangzhou, China","institution_ids":["https://openalex.org/I159948400"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":7,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I38706770"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.63098869,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"15","issue":null,"first_page":"2353","last_page":"2357"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10125","display_name":"Advanced Wireless Communication Techniques","score":0.20759999752044678,"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/T10125","display_name":"Advanced Wireless Communication Techniques","score":0.20759999752044678,"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/T10575","display_name":"Wireless Communication Networks Research","score":0.10859999805688858,"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/T11458","display_name":"Advanced Wireless Communication Technologies","score":0.06679999828338623,"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/channel","display_name":"Channel (broadcasting)","score":0.5295000076293945},{"id":"https://openalex.org/keywords/distribution","display_name":"Distribution (mathematics)","score":0.420199990272522},{"id":"https://openalex.org/keywords/estimation","display_name":"Estimation","score":0.38909998536109924},{"id":"https://openalex.org/keywords/estimation-theory","display_name":"Estimation theory","score":0.38600000739097595},{"id":"https://openalex.org/keywords/signal-to-noise-ratio","display_name":"Signal-to-noise ratio (imaging)","score":0.32280001044273376},{"id":"https://openalex.org/keywords/probability-distribution","display_name":"Probability distribution","score":0.3095000088214874},{"id":"https://openalex.org/keywords/interference","display_name":"Interference (communication)","score":0.3068000078201294}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7062000036239624},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.5295000076293945},{"id":"https://openalex.org/C110121322","wikidata":"https://www.wikidata.org/wiki/Q865811","display_name":"Distribution (mathematics)","level":2,"score":0.420199990272522},{"id":"https://openalex.org/C96250715","wikidata":"https://www.wikidata.org/wiki/Q965330","display_name":"Estimation","level":2,"score":0.38909998536109924},{"id":"https://openalex.org/C167928553","wikidata":"https://www.wikidata.org/wiki/Q1376021","display_name":"Estimation theory","level":2,"score":0.38600000739097595},{"id":"https://openalex.org/C13944312","wikidata":"https://www.wikidata.org/wiki/Q7512748","display_name":"Signal-to-noise ratio (imaging)","level":2,"score":0.32280001044273376},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.32199999690055847},{"id":"https://openalex.org/C149441793","wikidata":"https://www.wikidata.org/wiki/Q200726","display_name":"Probability distribution","level":2,"score":0.3095000088214874},{"id":"https://openalex.org/C32022120","wikidata":"https://www.wikidata.org/wiki/Q797225","display_name":"Interference (communication)","level":3,"score":0.3068000078201294},{"id":"https://openalex.org/C197055811","wikidata":"https://www.wikidata.org/wiki/Q207522","display_name":"Probability density function","level":2,"score":0.29840001463890076},{"id":"https://openalex.org/C99498987","wikidata":"https://www.wikidata.org/wiki/Q2210247","display_name":"Noise (video)","level":3,"score":0.29429998993873596},{"id":"https://openalex.org/C104267543","wikidata":"https://www.wikidata.org/wiki/Q208163","display_name":"Signal processing","level":3,"score":0.29269999265670776},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.28630000352859497},{"id":"https://openalex.org/C29265498","wikidata":"https://www.wikidata.org/wiki/Q7047719","display_name":"Noise measurement","level":3,"score":0.2840000092983246},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.2815000116825104},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.27079999446868896},{"id":"https://openalex.org/C2778002699","wikidata":"https://www.wikidata.org/wiki/Q876057","display_name":"Multi-user","level":2,"score":0.2624000012874603},{"id":"https://openalex.org/C2988922011","wikidata":"https://www.wikidata.org/wiki/Q5449244","display_name":"Filtering theory","level":2,"score":0.26089999079704285},{"id":"https://openalex.org/C49781872","wikidata":"https://www.wikidata.org/wiki/Q1045555","display_name":"Maximum likelihood","level":2,"score":0.25780001282691956},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.2533000111579895}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/lwc.2026.3676443","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lwc.2026.3676443","pdf_url":null,"source":{"id":"https://openalex.org/S2500830676","display_name":"IEEE Wireless Communications Letters","issn_l":"2162-2337","issn":["2162-2337","2162-2345"],"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 Wireless Communications Letters","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G2350845244","display_name":null,"funder_award_id":"52572472","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G2413572920","display_name":null,"funder_award_id":"GUIKE ZG2503980007","funder_id":"https://openalex.org/F4320336736","funder_display_name":"Chengdu Science and Technology Program"},{"id":"https://openalex.org/G2532958469","display_name":null,"funder_award_id":"GUIKE AB23075175","funder_id":"https://openalex.org/F4320336736","funder_display_name":"Chengdu Science and Technology Program"},{"id":"https://openalex.org/G8764465046","display_name":null,"funder_award_id":"GUIKE AA24263034-2","funder_id":"https://openalex.org/F4320336736","funder_display_name":"Chengdu Science and Technology Program"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"},{"id":"https://openalex.org/F4320336736","display_name":"Chengdu Science and Technology Program","ror":null}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":[],"abstract_inverted_index":{"Reconfigurable":[0],"Intelligent":[1],"Surface":[2],"(RIS)":[3],"is":[4,73],"a":[5,59,69,91,146,157],"pivotal":[6],"enabling":[7],"technology":[8],"for":[9],"sixth-generation":[10],"(6G)":[11],"wireless":[12],"systems,":[13],"yet":[14],"the":[15,49,77,84,109,116,120,127,132,165],"massive":[16],"number":[17],"of":[18,80,111,137],"passive":[19],"reflection":[20],"elements":[21,113],"in":[22,31,38,135],"RIS":[23],"introduces":[24],"prohibitive":[25],"pilot":[26,173],"overhead":[27],"during":[28],"channel":[29,71,102,117],"estimation\u2014especially":[30],"multi-user":[32],"scenarios":[33],"where":[34],"users":[35],"are":[36],"clustered":[37],"multiple":[39],"angular":[40,86],"regions.":[41],"To":[42],"address":[43],"this":[44,46],"challenge,":[45],"paper":[47],"exploits":[48],"underutilized":[50],"column":[51],"structural":[52],"sparsity":[53],"induced":[54],"by":[55],"multi-region":[56,70],"user":[57,81],"distribution,":[58],"feature":[60],"that":[61,126],"prior":[62],"works":[63],"have":[64],"not":[65],"fully":[66],"leveraged.":[67],"First,":[68],"model":[72],"established":[74],"to":[75,152,162],"characterize":[76],"inherent":[78],"correlation":[79],"channels":[82],"within":[83],"same":[85,166],"region.":[87],"Then,":[88],"we":[89],"propose":[90],"Structure-Sparse":[92],"Compressive":[93],"Sampling":[94],"Matching":[95],"Pursuit":[96],"(SS-CoSaMP)":[97],"algorithm,":[98],"which":[99],"decomposes":[100],"cascaded":[101],"estimation":[103],"into":[104],"two":[105],"sequential":[106],"stages:":[107],"estimating":[108],"positions":[110],"sparse":[112],"and":[114,154,156],"recovering":[115],"matrix":[118],"using":[119],"CoSaMP":[121],"framework.":[122],"Simulation":[123],"results":[124],"validate":[125],"proposed":[128],"SS-CoSaMP":[129],"algorithm":[130],"outperforms":[131],"exsiting":[133],"methods":[134],"terms":[136],"Normalized":[138],"Mean":[139],"Squared":[140],"Error":[141],"(NMSE).":[142],"Specifically,":[143],"it":[144],"achieves":[145],"1\u20132":[147],"dB":[148,159],"NMSE":[149],"reduction":[150,160],"compared":[151,161],"OMP":[153],"DS-OMP,":[155],"0.25":[158],"SS-OMP":[163],"under":[164],"signal-to-noise":[167],"ratio":[168],"(SNR),":[169],"while":[170],"significantly":[171],"reducing":[172],"overhead.":[174]},"counts_by_year":[],"updated_date":"2026-04-02T13:48:15.688549","created_date":"2026-03-24T00:00:00"}
