{"id":"https://openalex.org/W3216433467","doi":"https://doi.org/10.1109/lwc.2022.3156978","title":"Optimal Grouping Strategy for Reconfigurable Intelligent Surface Assisted Wireless Communications","display_name":"Optimal Grouping Strategy for Reconfigurable Intelligent Surface Assisted Wireless Communications","publication_year":2022,"publication_date":"2022-03-07","ids":{"openalex":"https://openalex.org/W3216433467","doi":"https://doi.org/10.1109/lwc.2022.3156978","mag":"3216433467"},"language":"en","primary_location":{"id":"doi:10.1109/lwc.2022.3156978","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lwc.2022.3156978","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":"https://openalex.org/A5008078639","display_name":"Neel Kanth Kundu","orcid":"https://orcid.org/0000-0002-6439-4024"},"institutions":[{"id":"https://openalex.org/I200769079","display_name":"Hong Kong University of Science and Technology","ror":"https://ror.org/00q4vv597","country_code":"HK","type":"education","lineage":["https://openalex.org/I200769079"]}],"countries":["HK"],"is_corresponding":false,"raw_author_name":"Neel Kanth Kundu","raw_affiliation_strings":["Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Hong Kong"],"raw_orcid":"https://orcid.org/0000-0002-6439-4024","affiliations":[{"raw_affiliation_string":"Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Hong Kong","institution_ids":["https://openalex.org/I200769079"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5103059865","display_name":"Zan Li","orcid":"https://orcid.org/0000-0003-3053-7741"},"institutions":[{"id":"https://openalex.org/I200769079","display_name":"Hong Kong University of Science and Technology","ror":"https://ror.org/00q4vv597","country_code":"HK","type":"education","lineage":["https://openalex.org/I200769079"]}],"countries":["HK"],"is_corresponding":false,"raw_author_name":"Zan Li","raw_affiliation_strings":["Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Hong Kong"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Hong Kong","institution_ids":["https://openalex.org/I200769079"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5040194064","display_name":"Junhui Rao","orcid":"https://orcid.org/0000-0001-6247-3223"},"institutions":[{"id":"https://openalex.org/I200769079","display_name":"Hong Kong University of Science and Technology","ror":"https://ror.org/00q4vv597","country_code":"HK","type":"education","lineage":["https://openalex.org/I200769079"]}],"countries":["HK"],"is_corresponding":false,"raw_author_name":"Junhui Rao","raw_affiliation_strings":["Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Hong Kong"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Hong Kong","institution_ids":["https://openalex.org/I200769079"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5015890986","display_name":"Shanpu Shen","orcid":"https://orcid.org/0000-0001-8487-2903"},"institutions":[{"id":"https://openalex.org/I200769079","display_name":"Hong Kong University of Science and Technology","ror":"https://ror.org/00q4vv597","country_code":"HK","type":"education","lineage":["https://openalex.org/I200769079"]}],"countries":["HK"],"is_corresponding":false,"raw_author_name":"Shanpu Shen","raw_affiliation_strings":["Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Hong Kong"],"raw_orcid":"https://orcid.org/0000-0001-8487-2903","affiliations":[{"raw_affiliation_string":"Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Hong Kong","institution_ids":["https://openalex.org/I200769079"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5091126453","display_name":"Matthew R. McKay","orcid":"https://orcid.org/0000-0002-8086-2545"},"institutions":[{"id":"https://openalex.org/I165779595","display_name":"The University of Melbourne","ror":"https://ror.org/01ej9dk98","country_code":"AU","type":"education","lineage":["https://openalex.org/I165779595"]},{"id":"https://openalex.org/I200769079","display_name":"Hong Kong University of Science and Technology","ror":"https://ror.org/00q4vv597","country_code":"HK","type":"education","lineage":["https://openalex.org/I200769079"]}],"countries":["AU","HK"],"is_corresponding":false,"raw_author_name":"Matthew R. McKay","raw_affiliation_strings":["Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Hong Kong","Department of Electrical and Electronic Engineering, University of Melbourne, Melbourne, VIC, Australia"],"raw_orcid":"https://orcid.org/0000-0002-8086-2545","affiliations":[{"raw_affiliation_string":"Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Hong Kong","institution_ids":["https://openalex.org/I200769079"]},{"raw_affiliation_string":"Department of Electrical and Electronic Engineering, University of Melbourne, Melbourne, VIC, Australia","institution_ids":["https://openalex.org/I165779595"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5004541948","display_name":"Ross Murch","orcid":"https://orcid.org/0000-0002-2527-7693"},"institutions":[{"id":"https://openalex.org/I200769079","display_name":"Hong Kong University of Science and Technology","ror":"https://ror.org/00q4vv597","country_code":"HK","type":"education","lineage":["https://openalex.org/I200769079"]},{"id":"https://openalex.org/I4210152695","display_name":"Nano and Advanced Materials Institute","ror":"https://ror.org/05m0z0h30","country_code":"CN","type":"facility","lineage":["https://openalex.org/I4210152695"]}],"countries":["CN","HK"],"is_corresponding":false,"raw_author_name":"Ross Murch","raw_affiliation_strings":["Department of Electronic and Computer Engineering and the Institute for Advanced Study, The Hong Kong University of Science and Technology, Hong Kong"],"raw_orcid":"https://orcid.org/0000-0002-2527-7693","affiliations":[{"raw_affiliation_string":"Department of Electronic and Computer Engineering and the Institute for Advanced Study, The Hong Kong University of Science and Technology, Hong Kong","institution_ids":["https://openalex.org/I200769079","https://openalex.org/I4210152695"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":2.1573,"has_fulltext":false,"cited_by_count":31,"citation_normalized_percentile":{"value":0.87460719,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":97,"max":99},"biblio":{"volume":"11","issue":"5","first_page":"1082","last_page":"1086"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11458","display_name":"Advanced Wireless Communication Technologies","score":0.9998999834060669,"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/T11458","display_name":"Advanced Wireless Communication Technologies","score":0.9998999834060669,"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/T10326","display_name":"Indoor and Outdoor Localization Technologies","score":0.9704999923706055,"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/T10069","display_name":"Antenna Design and Analysis","score":0.9578999876976013,"subfield":{"id":"https://openalex.org/subfields/2202","display_name":"Aerospace 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/overhead","display_name":"Overhead (engineering)","score":0.8223191499710083},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7784445881843567},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.6815187931060791},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.6501046419143677},{"id":"https://openalex.org/keywords/coherence","display_name":"Coherence (philosophical gambling strategy)","score":0.5823690295219421},{"id":"https://openalex.org/keywords/transmission","display_name":"Transmission (telecommunications)","score":0.5719573497772217},{"id":"https://openalex.org/keywords/transmitter-power-output","display_name":"Transmitter power output","score":0.5654367804527283},{"id":"https://openalex.org/keywords/coherence-time","display_name":"Coherence time","score":0.5526912808418274},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.3489520847797394},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.3421996533870697},{"id":"https://openalex.org/keywords/computer-engineering","display_name":"Computer engineering","score":0.3310815095901489},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.19776684045791626},{"id":"https://openalex.org/keywords/transmitter","display_name":"Transmitter","score":0.1701394021511078},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.10103020071983337},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.0972641110420227}],"concepts":[{"id":"https://openalex.org/C2779960059","wikidata":"https://www.wikidata.org/wiki/Q7113681","display_name":"Overhead (engineering)","level":2,"score":0.8223191499710083},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7784445881843567},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.6815187931060791},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.6501046419143677},{"id":"https://openalex.org/C2781181686","wikidata":"https://www.wikidata.org/wiki/Q4226068","display_name":"Coherence (philosophical gambling strategy)","level":2,"score":0.5823690295219421},{"id":"https://openalex.org/C761482","wikidata":"https://www.wikidata.org/wiki/Q118093","display_name":"Transmission (telecommunications)","level":2,"score":0.5719573497772217},{"id":"https://openalex.org/C65422117","wikidata":"https://www.wikidata.org/wiki/Q358527","display_name":"Transmitter power output","level":4,"score":0.5654367804527283},{"id":"https://openalex.org/C47091857","wikidata":"https://www.wikidata.org/wiki/Q4118612","display_name":"Coherence time","level":3,"score":0.5526912808418274},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.3489520847797394},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.3421996533870697},{"id":"https://openalex.org/C113775141","wikidata":"https://www.wikidata.org/wiki/Q428691","display_name":"Computer engineering","level":1,"score":0.3310815095901489},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.19776684045791626},{"id":"https://openalex.org/C47798520","wikidata":"https://www.wikidata.org/wiki/Q190157","display_name":"Transmitter","level":3,"score":0.1701394021511078},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.10103020071983337},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.0972641110420227},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.0},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.0}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.1109/lwc.2022.3156978","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lwc.2022.3156978","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"},{"id":"pmh:oai:repository.hkust.edu.hk:1783.1-115607","is_oa":false,"landing_page_url":"http://lbdiscover.ust.hk/uresolver?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rfr_id=info:sid/HKUST:SPI&rft.genre=article&rft.issn=&rft.volume=&rft.issue=&rft.date=2022&rft.spage=&rft.aulast=Kundu&rft.aufirst=Neel+Kanth&rft.atitle=Optimal+Grouping+Strategy+for+Reconfigurable+Intelligent+Surface+Assisted+Wireless+Communications&rft.title=IEEE+Wireless+Communications+Letters","pdf_url":null,"source":{"id":"https://openalex.org/S4306401796","display_name":"Rare & Special e-Zone (The Hong Kong University of Science and Technology)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I200769079","host_organization_name":"Hong Kong University of Science and Technology","host_organization_lineage":["https://openalex.org/I200769079"],"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":"Article"},{"id":"pmh:oai:repository.ust.hk:1783.1-115607","is_oa":false,"landing_page_url":"http://repository.ust.hk/ir/Record/1783.1-115607","pdf_url":null,"source":{"id":"https://openalex.org/S4306401796","display_name":"Rare & Special e-Zone (The Hong Kong University of Science and Technology)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I200769079","host_organization_name":"Hong Kong University of Science and Technology","host_organization_lineage":["https://openalex.org/I200769079"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G3144705399","display_name":null,"funder_award_id":"C6012-20G","funder_id":"https://openalex.org/F4320321592","funder_display_name":"Research Grants Council, University Grants Committee"}],"funders":[{"id":"https://openalex.org/F4320321592","display_name":"Research Grants Council, University Grants Committee","ror":"https://ror.org/00djwmt25"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":29,"referenced_works":["https://openalex.org/W2063551896","https://openalex.org/W2068728923","https://openalex.org/W2547140262","https://openalex.org/W2770606349","https://openalex.org/W2795167939","https://openalex.org/W2891354184","https://openalex.org/W2950077417","https://openalex.org/W2968810373","https://openalex.org/W2969424089","https://openalex.org/W2971912794","https://openalex.org/W2981174761","https://openalex.org/W3000522337","https://openalex.org/W3008356568","https://openalex.org/W3010695123","https://openalex.org/W3027118737","https://openalex.org/W3041653465","https://openalex.org/W3043220753","https://openalex.org/W3080299781","https://openalex.org/W3097241762","https://openalex.org/W3100218246","https://openalex.org/W3100536113","https://openalex.org/W3103991536","https://openalex.org/W3121776523","https://openalex.org/W3128169747","https://openalex.org/W3134690199","https://openalex.org/W3178081691","https://openalex.org/W3194854077","https://openalex.org/W3194940985","https://openalex.org/W4233022137"],"related_works":["https://openalex.org/W2784320098","https://openalex.org/W4292182623","https://openalex.org/W2613310977","https://openalex.org/W2542853907","https://openalex.org/W2079440735","https://openalex.org/W4388395902","https://openalex.org/W2093932594","https://openalex.org/W2077883150","https://openalex.org/W2490493698","https://openalex.org/W2974914686"],"abstract_inverted_index":{"The":[0],"channel":[1,88],"estimation":[2],"overhead":[3,39],"of":[4,52],"reconfigurable":[5],"intelligent":[6],"surface":[7],"(RIS)":[8],"assisted":[9],"communication":[10],"systems":[11],"can":[12,33,108],"be":[13],"prohibitive.":[14],"Prior":[15],"works":[16],"have":[17,121],"demonstrated":[18],"via":[19],"simulations":[20],"that":[21,80,105,120],"an":[22,49],"adaptive":[23],"transmission":[24],"scheme":[25],"where":[26],"neighbouring":[27],"RIS":[28,53,116],"elements":[29],"are":[30],"grouped":[31],"together":[32],"help":[34],"to":[35,73],"reduce":[36],"the":[37,64,74,87,97],"pilot":[38],"and":[40,67],"improve":[41],"achievable":[42,65],"rate.":[43],"In":[44],"this":[45],"letter,":[46],"we":[47],"present":[48],"analytical":[50],"study":[51],"element":[54,117],"grouping.":[55],"We":[56,102],"derive":[57],"a":[58],"tight":[59],"closed-form":[60],"upper":[61],"bound":[62],"for":[63],"rate":[66],"then":[68],"maximize":[69],"it":[70],"with":[71],"respect":[72],"group":[75],"size.":[76],"Our":[77],"analysis":[78],"reveals":[79],"more":[81],"coarse-grained":[82],"grouping":[83,107],"is":[84,91,100],"important":[85],"when":[86],"coherence":[89],"time":[90],"low":[92],"(high":[93],"mobility":[94],"scenarios)":[95],"or":[96],"transmit":[98],"power":[99],"large.":[101],"also":[103],"demonstrate":[104],"optimal":[106],"yield":[109],"significant":[110],"performance":[111],"improvements":[112],"over":[113],"simple":[114],"\u2018On-Off\u2019":[115],"switching":[118],"schemes":[119],"been":[122],"recently":[123],"considered.":[124]},"counts_by_year":[{"year":2026,"cited_by_count":2},{"year":2025,"cited_by_count":6},{"year":2024,"cited_by_count":8},{"year":2023,"cited_by_count":9},{"year":2022,"cited_by_count":6}],"updated_date":"2026-07-22T07:51:19.307946","created_date":"2025-10-10T00:00:00"}