{"id":"https://openalex.org/W3088768990","doi":"https://doi.org/10.1109/lcomm.2020.3025345","title":"Reconfigurable Intelligent Surface (RIS) Assisted Wireless Coverage Extension: RIS Orientation and Location Optimization","display_name":"Reconfigurable Intelligent Surface (RIS) Assisted Wireless Coverage Extension: RIS Orientation and Location Optimization","publication_year":2020,"publication_date":"2020-09-21","ids":{"openalex":"https://openalex.org/W3088768990","doi":"https://doi.org/10.1109/lcomm.2020.3025345","mag":"3088768990"},"language":"en","primary_location":{"id":"doi:10.1109/lcomm.2020.3025345","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lcomm.2020.3025345","pdf_url":null,"source":{"id":"https://openalex.org/S147316732","display_name":"IEEE Communications Letters","issn_l":"1089-7798","issn":["1089-7798","1558-2558","2373-7891"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310316002","host_organization_name":"IEEE Communications Society","host_organization_lineage":["https://openalex.org/P4310316002","https://openalex.org/P4310319808"],"host_organization_lineage_names":["IEEE Communications Society","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 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/A5012112103","display_name":"Shuhao Zeng","orcid":"https://orcid.org/0000-0003-4534-6702"},"institutions":[{"id":"https://openalex.org/I20231570","display_name":"Peking University","ror":"https://ror.org/02v51f717","country_code":"CN","type":"education","lineage":["https://openalex.org/I20231570"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Shuhao Zeng","raw_affiliation_strings":["Peking University, Beijing, China"],"raw_orcid":"https://orcid.org/0000-0003-4534-6702","affiliations":[{"raw_affiliation_string":"Peking University, Beijing, China","institution_ids":["https://openalex.org/I20231570"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100440579","display_name":"Hongliang Zhang","orcid":"https://orcid.org/0000-0003-3393-8612"},"institutions":[{"id":"https://openalex.org/I20089843","display_name":"Princeton University","ror":"https://ror.org/00hx57361","country_code":"US","type":"education","lineage":["https://openalex.org/I20089843"]},{"id":"https://openalex.org/I20231570","display_name":"Peking University","ror":"https://ror.org/02v51f717","country_code":"CN","type":"education","lineage":["https://openalex.org/I20231570"]}],"countries":["CN","US"],"is_corresponding":false,"raw_author_name":"Hongliang Zhang","raw_affiliation_strings":["Peking University, Beijing, China","Princeton University, Princeton, NJ, USA"],"raw_orcid":"https://orcid.org/0000-0003-3393-8612","affiliations":[{"raw_affiliation_string":"Peking University, Beijing, China","institution_ids":["https://openalex.org/I20231570"]},{"raw_affiliation_string":"Princeton University, Princeton, NJ, USA","institution_ids":["https://openalex.org/I20089843"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5025572015","display_name":"Boya Di","orcid":"https://orcid.org/0000-0003-3484-1361"},"institutions":[{"id":"https://openalex.org/I20231570","display_name":"Peking University","ror":"https://ror.org/02v51f717","country_code":"CN","type":"education","lineage":["https://openalex.org/I20231570"]},{"id":"https://openalex.org/I47508984","display_name":"Imperial College London","ror":"https://ror.org/041kmwe10","country_code":"GB","type":"education","lineage":["https://openalex.org/I47508984"]}],"countries":["CN","GB"],"is_corresponding":false,"raw_author_name":"Boya Di","raw_affiliation_strings":["Imperial College London, London, U.K","Peking University, Beijing, China"],"raw_orcid":"https://orcid.org/0000-0003-3484-1361","affiliations":[{"raw_affiliation_string":"Imperial College London, London, U.K","institution_ids":["https://openalex.org/I47508984"]},{"raw_affiliation_string":"Peking University, Beijing, China","institution_ids":["https://openalex.org/I20231570"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5063667378","display_name":"Zhu Han","orcid":"https://orcid.org/0000-0002-6606-5822"},"institutions":[{"id":"https://openalex.org/I35928602","display_name":"Kyung Hee University","ror":"https://ror.org/01zqcg218","country_code":"KR","type":"education","lineage":["https://openalex.org/I35928602"]},{"id":"https://openalex.org/I44461941","display_name":"University of Houston","ror":"https://ror.org/048sx0r50","country_code":"US","type":"education","lineage":["https://openalex.org/I44461941"]}],"countries":["KR","US"],"is_corresponding":false,"raw_author_name":"Zhu Han","raw_affiliation_strings":["Kyung Hee University, Seoul, South Korea","University of Houston, Houston, TX, USA"],"raw_orcid":"https://orcid.org/0000-0002-6606-5822","affiliations":[{"raw_affiliation_string":"Kyung Hee University, Seoul, South Korea","institution_ids":["https://openalex.org/I35928602"]},{"raw_affiliation_string":"University of Houston, Houston, TX, USA","institution_ids":["https://openalex.org/I44461941"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5102012574","display_name":"Lingyang Song","orcid":"https://orcid.org/0000-0001-8644-8241"},"institutions":[{"id":"https://openalex.org/I20231570","display_name":"Peking University","ror":"https://ror.org/02v51f717","country_code":"CN","type":"education","lineage":["https://openalex.org/I20231570"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Lingyang Song","raw_affiliation_strings":["Peking University, Beijing, China"],"raw_orcid":"https://orcid.org/0000-0001-8644-8241","affiliations":[{"raw_affiliation_string":"Peking University, Beijing, China","institution_ids":["https://openalex.org/I20231570"]}]}],"institutions":[],"countries_distinct_count":4,"institutions_distinct_count":5,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":19.252,"has_fulltext":false,"cited_by_count":355,"citation_normalized_percentile":{"value":0.99647752,"is_in_top_1_percent":true,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":96,"max":100},"biblio":{"volume":"25","issue":"1","first_page":"269","last_page":"273"},"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/T12042","display_name":"Satellite Communication Systems","score":0.9667999744415283,"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"}},{"id":"https://openalex.org/T11133","display_name":"UAV Applications and Optimization","score":0.9620000123977661,"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/telecommunications-link","display_name":"Telecommunications link","score":0.7689641714096069},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7304620742797852},{"id":"https://openalex.org/keywords/orientation","display_name":"Orientation (vector space)","score":0.7242953181266785},{"id":"https://openalex.org/keywords/base-station","display_name":"Base station","score":0.7112842202186584},{"id":"https://openalex.org/keywords/maximization","display_name":"Maximization","score":0.6067473888397217},{"id":"https://openalex.org/keywords/user-equipment","display_name":"User equipment","score":0.5886998176574707},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.5855346918106079},{"id":"https://openalex.org/keywords/optimization-problem","display_name":"Optimization problem","score":0.41072213649749756},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.35954663157463074},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.32349133491516113},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.26056307554244995},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.248026043176651},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.15320876240730286}],"concepts":[{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.7689641714096069},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7304620742797852},{"id":"https://openalex.org/C16345878","wikidata":"https://www.wikidata.org/wiki/Q107472979","display_name":"Orientation (vector space)","level":2,"score":0.7242953181266785},{"id":"https://openalex.org/C68649174","wikidata":"https://www.wikidata.org/wiki/Q1379116","display_name":"Base station","level":2,"score":0.7112842202186584},{"id":"https://openalex.org/C2776330181","wikidata":"https://www.wikidata.org/wiki/Q18358244","display_name":"Maximization","level":2,"score":0.6067473888397217},{"id":"https://openalex.org/C2781327853","wikidata":"https://www.wikidata.org/wiki/Q3552547","display_name":"User equipment","level":3,"score":0.5886998176574707},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.5855346918106079},{"id":"https://openalex.org/C137836250","wikidata":"https://www.wikidata.org/wiki/Q984063","display_name":"Optimization problem","level":2,"score":0.41072213649749756},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.35954663157463074},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.32349133491516113},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.26056307554244995},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.248026043176651},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.15320876240730286},{"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/lcomm.2020.3025345","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lcomm.2020.3025345","pdf_url":null,"source":{"id":"https://openalex.org/S147316732","display_name":"IEEE Communications Letters","issn_l":"1089-7798","issn":["1089-7798","1558-2558","2373-7891"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310316002","host_organization_name":"IEEE Communications Society","host_organization_lineage":["https://openalex.org/P4310316002","https://openalex.org/P4310319808"],"host_organization_lineage_names":["IEEE Communications Society","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 Communications Letters","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":16,"referenced_works":["https://openalex.org/W2107778812","https://openalex.org/W2805166665","https://openalex.org/W2941598852","https://openalex.org/W2950077417","https://openalex.org/W2951429994","https://openalex.org/W2963121727","https://openalex.org/W2990193244","https://openalex.org/W2995518851","https://openalex.org/W2996313530","https://openalex.org/W3005112765","https://openalex.org/W3016347440","https://openalex.org/W3021587675","https://openalex.org/W3034533409","https://openalex.org/W3041653465","https://openalex.org/W4250589301","https://openalex.org/W6761393245"],"related_works":["https://openalex.org/W4365807906","https://openalex.org/W2157864637","https://openalex.org/W4223416141","https://openalex.org/W3006920049","https://openalex.org/W2546639359","https://openalex.org/W1922070205","https://openalex.org/W2957675536","https://openalex.org/W4226210192","https://openalex.org/W4376480765","https://openalex.org/W4313169359"],"abstract_inverted_index":{"Recently,":[0],"reconfigurable":[1],"intelligent":[2],"surfaces":[3],"(RIS)":[4],"have":[5,61],"attracted":[6],"a":[7,33,62,94,102],"lot":[8],"of":[9,15,32],"attention":[10],"due":[11],"to":[12,76],"their":[13],"capability":[14],"extending":[16],"cell":[17,67,79],"coverage":[18,31,80,95],"by":[19,81],"reflecting":[20],"signals":[21],"toward":[22],"the":[23,30,48,52,56,59,66,78,83,91],"receiver.":[24],"In":[25],"this":[26],"letter,":[27],"we":[28,69],"analyze":[29],"downlink":[34],"RIS-assisted":[35],"network":[36],"with":[37],"one":[38,43],"base":[39],"station":[40],"(BS)":[41],"and":[42,51,58,86],"user":[44],"equipment":[45],"(UE).":[46],"Since":[47],"RIS":[49,57,72,84,105],"orientation":[50,85,106],"horizontal":[53,87],"distance":[54],"between":[55],"BS":[60],"significant":[63],"influence":[64],"on":[65],"coverage,":[68],"formulate":[70],"an":[71],"placement":[73],"optimization":[74],"problem":[75],"maximize":[77],"optimizing":[82],"distance.":[88],"To":[89],"solve":[90],"formulated":[92],"problem,":[93],"maximization":[96],"algorithm":[97],"(CMA)":[98],"is":[99,107],"proposed,":[100],"where":[101],"closed-form":[103],"optimal":[104],"obtained.":[108],"Numerical":[109],"results":[110],"verify":[111],"our":[112],"analysis.":[113]},"counts_by_year":[{"year":2026,"cited_by_count":15},{"year":2025,"cited_by_count":84},{"year":2024,"cited_by_count":71},{"year":2023,"cited_by_count":93},{"year":2022,"cited_by_count":64},{"year":2021,"cited_by_count":25},{"year":2020,"cited_by_count":3}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}