{"id":"https://openalex.org/W4414798909","doi":"https://doi.org/10.1109/jsac.2025.3617021","title":"Revisiting Spatial Block-Correlation Model for Fluid Antenna Systems: From Constant to Variable Correlations","display_name":"Revisiting Spatial Block-Correlation Model for Fluid Antenna Systems: From Constant to Variable Correlations","publication_year":2025,"publication_date":"2025-10-03","ids":{"openalex":"https://openalex.org/W4414798909","doi":"https://doi.org/10.1109/jsac.2025.3617021"},"language":"en","primary_location":{"id":"doi:10.1109/jsac.2025.3617021","is_oa":false,"landing_page_url":"https://doi.org/10.1109/jsac.2025.3617021","pdf_url":null,"source":{"id":"https://openalex.org/S90422530","display_name":"IEEE Journal on Selected Areas in Communications","issn_l":"0733-8716","issn":["0733-8716","1558-0008"],"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 Journal on Selected Areas in 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/A5058328657","display_name":"Xiazhi Lai","orcid":"https://orcid.org/0000-0003-1073-7885"},"institutions":[{"id":"https://openalex.org/I32246829","display_name":"Guangdong University of Education","ror":"https://ror.org/0574der91","country_code":"CN","type":"education","lineage":["https://openalex.org/I32246829"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Xiazhi Lai","raw_affiliation_strings":["School of Computer Science, Guangdong University of Education, Guangzhou, Guangdong, China"],"affiliations":[{"raw_affiliation_string":"School of Computer Science, Guangdong University of Education, Guangzhou, Guangdong, China","institution_ids":["https://openalex.org/I32246829"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5109070412","display_name":"Te\u2010Kao Wu","orcid":"https://orcid.org/0009-0003-7898-4441"},"institutions":[{"id":"https://openalex.org/I172675005","display_name":"Nanyang Technological University","ror":"https://ror.org/02e7b5302","country_code":"SG","type":"education","lineage":["https://openalex.org/I172675005"]}],"countries":["SG"],"is_corresponding":false,"raw_author_name":"Tuo Wu","raw_affiliation_strings":["School of Electrical and Electronic Engineering, Nanyang Technological University, Jurong West, Singapore","School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore"],"affiliations":[{"raw_affiliation_string":"School of Electrical and Electronic Engineering, Nanyang Technological University, Jurong West, Singapore","institution_ids":["https://openalex.org/I172675005"]},{"raw_affiliation_string":"School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore","institution_ids":["https://openalex.org/I172675005"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5054154836","display_name":"Lifeng Mai","orcid":"https://orcid.org/0000-0002-4510-5178"},"institutions":[{"id":"https://openalex.org/I74872605","display_name":"China Southern Power Grid (China)","ror":"https://ror.org/03hkh9419","country_code":"CN","type":"company","lineage":["https://openalex.org/I74872605"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Lifeng Mai","raw_affiliation_strings":["Electric Power Research Institute, China Southern Power Grid, Guangzhou, China"],"affiliations":[{"raw_affiliation_string":"Electric Power Research Institute, China Southern Power Grid, Guangzhou, China","institution_ids":["https://openalex.org/I74872605"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5015335741","display_name":"Maged Elkashlan","orcid":"https://orcid.org/0000-0002-5168-0160"},"institutions":[{"id":"https://openalex.org/I166337079","display_name":"Queen Mary University of London","ror":"https://ror.org/026zzn846","country_code":"GB","type":"education","lineage":["https://openalex.org/I124357947","https://openalex.org/I166337079"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Maged Elkashlan","raw_affiliation_strings":["School of Electronic Engineering and Computer Science, Queen Mary University of London, London, U.K"],"affiliations":[{"raw_affiliation_string":"School of Electronic Engineering and Computer Science, Queen Mary University of London, London, U.K","institution_ids":["https://openalex.org/I166337079"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5081018704","display_name":"Naofal Al\u2010Dhahir","orcid":"https://orcid.org/0000-0001-9894-8382"},"institutions":[{"id":"https://openalex.org/I162577319","display_name":"The University of Texas at Dallas","ror":"https://ror.org/049emcs32","country_code":"US","type":"education","lineage":["https://openalex.org/I162577319"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Naofal Al-Dhahir","raw_affiliation_strings":["Department of Electrical and Computer Engineering, The University of Texas at Dallas, Richardson, TX, USA"],"affiliations":[{"raw_affiliation_string":"Department of Electrical and Computer Engineering, The University of Texas at Dallas, Richardson, TX, USA","institution_ids":["https://openalex.org/I162577319"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5056145687","display_name":"M\u00e9rouane Debbah","orcid":"https://orcid.org/0000-0001-8941-8080"},"institutions":[{"id":"https://openalex.org/I176601375","display_name":"Khalifa University of Science and Technology","ror":"https://ror.org/05hffr360","country_code":"AE","type":"education","lineage":["https://openalex.org/I176601375"]}],"countries":["AE"],"is_corresponding":false,"raw_author_name":"M\u00e9rouane Debbah","raw_affiliation_strings":["Department of Computer and Information Engineering, KU 6G Research Center, Khalifa University, Abu Dhabi, United Arab Emirates","Department of Computer and Information Engineering, KU6G Research Center, Khalifa University, Abu Dhabi, UAE"],"affiliations":[{"raw_affiliation_string":"Department of Computer and Information Engineering, KU 6G Research Center, Khalifa University, Abu Dhabi, United Arab Emirates","institution_ids":["https://openalex.org/I176601375"]},{"raw_affiliation_string":"Department of Computer and Information Engineering, KU6G Research Center, Khalifa University, Abu Dhabi, UAE","institution_ids":["https://openalex.org/I176601375"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5061744244","display_name":"George K. Karagiannidis","orcid":"https://orcid.org/0000-0001-8810-0345"},"institutions":[{"id":"https://openalex.org/I21370196","display_name":"Aristotle University of Thessaloniki","ror":"https://ror.org/02j61yw88","country_code":"GR","type":"education","lineage":["https://openalex.org/I21370196"]}],"countries":["GR"],"is_corresponding":false,"raw_author_name":"George K. Karagiannidis","raw_affiliation_strings":["Department of Electrical and Computer Engineering, Aristotle University of Thessaloniki, Thessaloniki, Greece"],"affiliations":[{"raw_affiliation_string":"Department of Electrical and Computer Engineering, Aristotle University of Thessaloniki, Thessaloniki, Greece","institution_ids":["https://openalex.org/I21370196"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5060020877","display_name":"Chau Yuen","orcid":"https://orcid.org/0000-0002-9307-2120"},"institutions":[{"id":"https://openalex.org/I172675005","display_name":"Nanyang Technological University","ror":"https://ror.org/02e7b5302","country_code":"SG","type":"education","lineage":["https://openalex.org/I172675005"]}],"countries":["SG"],"is_corresponding":false,"raw_author_name":"Chau Yuen","raw_affiliation_strings":["School of Electrical and Electronic Engineering, Nanyang Technological University, Jurong West, Singapore","School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore"],"affiliations":[{"raw_affiliation_string":"School of Electrical and Electronic Engineering, Nanyang Technological University, Jurong West, Singapore","institution_ids":["https://openalex.org/I172675005"]},{"raw_affiliation_string":"School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore","institution_ids":["https://openalex.org/I172675005"]}]}],"institutions":[],"countries_distinct_count":6,"institutions_distinct_count":8,"corresponding_author_ids":["https://openalex.org/A5058328657"],"corresponding_institution_ids":["https://openalex.org/I32246829"],"apc_list":null,"apc_paid":null,"fwci":2.3841,"has_fulltext":false,"cited_by_count":2,"citation_normalized_percentile":{"value":0.90262734,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":98,"max":99},"biblio":{"volume":"44","issue":null,"first_page":"1335","last_page":"1351"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12206","display_name":"Vibration and Dynamic Analysis","score":0.7559999823570251,"subfield":{"id":"https://openalex.org/subfields/2207","display_name":"Control and Systems 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/T12206","display_name":"Vibration and Dynamic Analysis","score":0.7559999823570251,"subfield":{"id":"https://openalex.org/subfields/2207","display_name":"Control and Systems 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/T11394","display_name":"Dynamics and Control of Mechanical Systems","score":0.6991000175476074,"subfield":{"id":"https://openalex.org/subfields/2207","display_name":"Control and Systems 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/spatial-correlation","display_name":"Spatial correlation","score":0.5924999713897705},{"id":"https://openalex.org/keywords/constant","display_name":"Constant (computer programming)","score":0.5288000106811523},{"id":"https://openalex.org/keywords/exponential-function","display_name":"Exponential function","score":0.5006999969482422},{"id":"https://openalex.org/keywords/heuristic","display_name":"Heuristic","score":0.46549999713897705},{"id":"https://openalex.org/keywords/variable","display_name":"Variable (mathematics)","score":0.42179998755455017},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.4131999909877777},{"id":"https://openalex.org/keywords/computational-complexity-theory","display_name":"Computational complexity theory","score":0.40540000796318054},{"id":"https://openalex.org/keywords/probability-density-function","display_name":"Probability density function","score":0.40470001101493835},{"id":"https://openalex.org/keywords/correlation","display_name":"Correlation","score":0.40389999747276306},{"id":"https://openalex.org/keywords/antenna","display_name":"Antenna (radio)","score":0.36010000109672546}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6182000041007996},{"id":"https://openalex.org/C150060386","wikidata":"https://www.wikidata.org/wiki/Q7574054","display_name":"Spatial correlation","level":2,"score":0.5924999713897705},{"id":"https://openalex.org/C2777027219","wikidata":"https://www.wikidata.org/wiki/Q1284190","display_name":"Constant (computer programming)","level":2,"score":0.5288000106811523},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.508899986743927},{"id":"https://openalex.org/C151376022","wikidata":"https://www.wikidata.org/wiki/Q168698","display_name":"Exponential function","level":2,"score":0.5006999969482422},{"id":"https://openalex.org/C173801870","wikidata":"https://www.wikidata.org/wiki/Q201413","display_name":"Heuristic","level":2,"score":0.46549999713897705},{"id":"https://openalex.org/C182365436","wikidata":"https://www.wikidata.org/wiki/Q50701","display_name":"Variable (mathematics)","level":2,"score":0.42179998755455017},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.4131999909877777},{"id":"https://openalex.org/C179799912","wikidata":"https://www.wikidata.org/wiki/Q205084","display_name":"Computational complexity theory","level":2,"score":0.40540000796318054},{"id":"https://openalex.org/C197055811","wikidata":"https://www.wikidata.org/wiki/Q207522","display_name":"Probability density function","level":2,"score":0.40470001101493835},{"id":"https://openalex.org/C117220453","wikidata":"https://www.wikidata.org/wiki/Q5172842","display_name":"Correlation","level":2,"score":0.40389999747276306},{"id":"https://openalex.org/C21822782","wikidata":"https://www.wikidata.org/wiki/Q131214","display_name":"Antenna (radio)","level":2,"score":0.36010000109672546},{"id":"https://openalex.org/C53622274","wikidata":"https://www.wikidata.org/wiki/Q2496679","display_name":"Correlation function (quantum field theory)","level":3,"score":0.35580000281333923},{"id":"https://openalex.org/C148764684","wikidata":"https://www.wikidata.org/wiki/Q621751","display_name":"Approximation algorithm","level":2,"score":0.3555000126361847},{"id":"https://openalex.org/C106487976","wikidata":"https://www.wikidata.org/wiki/Q685816","display_name":"Matrix (chemical analysis)","level":2,"score":0.3463999927043915},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.33869999647140503},{"id":"https://openalex.org/C28826006","wikidata":"https://www.wikidata.org/wiki/Q33521","display_name":"Applied mathematics","level":1,"score":0.3271999955177307},{"id":"https://openalex.org/C42812","wikidata":"https://www.wikidata.org/wiki/Q1082910","display_name":"Partition (number theory)","level":2,"score":0.32690000534057617},{"id":"https://openalex.org/C62191587","wikidata":"https://www.wikidata.org/wiki/Q4771249","display_name":"Antenna array","level":3,"score":0.32190001010894775},{"id":"https://openalex.org/C2778401447","wikidata":"https://www.wikidata.org/wiki/Q7140637","display_name":"Partition function (quantum field theory)","level":2,"score":0.31619998812675476},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.3116999864578247},{"id":"https://openalex.org/C14036430","wikidata":"https://www.wikidata.org/wiki/Q3736076","display_name":"Function (biology)","level":2,"score":0.3100999891757965},{"id":"https://openalex.org/C2776257435","wikidata":"https://www.wikidata.org/wiki/Q1576430","display_name":"Bandwidth (computing)","level":2,"score":0.3037000000476837},{"id":"https://openalex.org/C122383733","wikidata":"https://www.wikidata.org/wiki/Q865920","display_name":"Approximation error","level":2,"score":0.2935999929904938},{"id":"https://openalex.org/C122123141","wikidata":"https://www.wikidata.org/wiki/Q176623","display_name":"Random variable","level":2,"score":0.28850001096725464},{"id":"https://openalex.org/C60069766","wikidata":"https://www.wikidata.org/wiki/Q357054","display_name":"Antenna diversity","level":3,"score":0.28200000524520874},{"id":"https://openalex.org/C180205008","wikidata":"https://www.wikidata.org/wiki/Q159190","display_name":"Amplitude","level":2,"score":0.2777000069618225},{"id":"https://openalex.org/C97744766","wikidata":"https://www.wikidata.org/wiki/Q870845","display_name":"Channel capacity","level":3,"score":0.2770000100135803},{"id":"https://openalex.org/C145242015","wikidata":"https://www.wikidata.org/wiki/Q774123","display_name":"Approximation theory","level":2,"score":0.2766999900341034},{"id":"https://openalex.org/C5297727","wikidata":"https://www.wikidata.org/wiki/Q786970","display_name":"Autocorrelation","level":2,"score":0.2703999876976013},{"id":"https://openalex.org/C18555067","wikidata":"https://www.wikidata.org/wiki/Q8375051","display_name":"Joint (building)","level":2,"score":0.26170000433921814},{"id":"https://openalex.org/C25343380","wikidata":"https://www.wikidata.org/wiki/Q277521","display_name":"Relation (database)","level":2,"score":0.26109999418258667},{"id":"https://openalex.org/C185142706","wikidata":"https://www.wikidata.org/wiki/Q1134404","display_name":"Covariance matrix","level":2,"score":0.26089999079704285},{"id":"https://openalex.org/C160824197","wikidata":"https://www.wikidata.org/wiki/Q2071054","display_name":"Linear approximation","level":3,"score":0.2540999948978424},{"id":"https://openalex.org/C184720557","wikidata":"https://www.wikidata.org/wiki/Q7825049","display_name":"Topology (electrical circuits)","level":2,"score":0.25220000743865967},{"id":"https://openalex.org/C101765175","wikidata":"https://www.wikidata.org/wiki/Q577764","display_name":"Communications system","level":2,"score":0.2517000138759613}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/jsac.2025.3617021","is_oa":false,"landing_page_url":"https://doi.org/10.1109/jsac.2025.3617021","pdf_url":null,"source":{"id":"https://openalex.org/S90422530","display_name":"IEEE Journal on Selected Areas in Communications","issn_l":"0733-8716","issn":["0733-8716","1558-0008"],"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 Journal on Selected Areas in 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":41,"referenced_works":["https://openalex.org/W280536263","https://openalex.org/W1972485395","https://openalex.org/W2119478661","https://openalex.org/W3039758053","https://openalex.org/W3107232831","https://openalex.org/W3145258291","https://openalex.org/W4206671696","https://openalex.org/W4213288133","https://openalex.org/W4220978974","https://openalex.org/W4223467657","https://openalex.org/W4285196564","https://openalex.org/W4316661310","https://openalex.org/W4323896643","https://openalex.org/W4379931467","https://openalex.org/W4386825336","https://openalex.org/W4388073421","https://openalex.org/W4390356862","https://openalex.org/W4390357369","https://openalex.org/W4393139936","https://openalex.org/W4396753469","https://openalex.org/W4399039738","https://openalex.org/W4399666215","https://openalex.org/W4399801188","https://openalex.org/W4401325875","https://openalex.org/W4402436305","https://openalex.org/W4403123427","https://openalex.org/W4403210464","https://openalex.org/W4403391443","https://openalex.org/W4404410614","https://openalex.org/W4405429277","https://openalex.org/W4406264806","https://openalex.org/W4406354720","https://openalex.org/W4406856782","https://openalex.org/W4406983199","https://openalex.org/W4408324910","https://openalex.org/W4409149010","https://openalex.org/W4409494570","https://openalex.org/W4409916860","https://openalex.org/W4410226870","https://openalex.org/W4410229220","https://openalex.org/W4410986060"],"related_works":[],"abstract_inverted_index":{"Fluid":[0],"antenna":[1,24],"systems":[2],"(FAS)":[3],"have":[4],"emerged":[5],"as":[6],"a":[7,95,127],"promising":[8],"technology":[9],"to":[10,73,141,164,182,238],"achieve":[11],"high":[12],"spatial":[13,29,88],"diversity":[14],"by":[15],"dynamically":[16],"reconfiguring":[17],"multiple":[18],"closely":[19,187],"spaced":[20,188],"<italic":[21,48,52,60,138,147,151,155,321],"xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"":[22,49,53,61,139,144,148,152,156,229,322],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">N</i>":[23,50,54,145,230],"ports.":[25,81],"However,":[26],"the":[27,47,87,102,107,120,133,170,194,210,222,247,255,260,277,326,333],"inherent":[28],"correlation":[30,56,66,123,166],"among":[31,280],"these":[32],"ports":[33,225],"poses":[34],"significant":[35],"challenges":[36],"for":[37,91,119,193,332],"accurate":[38],"performance":[39,215,313],"analysis.":[40],"Traditional":[41],"block-correlation":[42,74,89,97,109,175,267,294],"modeling":[43,98,176],"algorithms,":[44],"which":[45,105],"partition":[46],"\u00d7":[51,150],"Toeplitz-structured":[55],"matrix":[57],"into":[58],"independent":[59],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">D</i>":[62,153],"blocks":[63],"with":[64,79,186,265],"constant":[65,165],"coefficients,":[67],"often":[68],"yield":[69],"substantial":[70],"approximation":[71,161,305],"errors":[72],"models,":[75],"especially":[76],"in":[77,100,111,302,315],"scenarios":[78],"limited":[80],"In":[82],"this":[83],"paper,":[84],"we":[85,178,234,269],"revisit":[86],"model":[90,103,110,295],"FAS":[92,184],"and":[93,125,203,217,251,307,317,335],"introduce":[94],"novel":[96],"algorithm":[99,130,212],"tuning":[101],"parameters,":[104],"realizes":[106],"variable":[108,174,266,293],"practice.":[112],"Our":[113,206],"proposed":[114,211],"approach":[115,331],"derives":[116],"closed-form":[117],"expressions":[118,192,274],"optimal":[121],"block-specific":[122],"coefficients":[124],"develops":[126],"low-complexity":[128],"heuristic":[129],"that":[131,209,275,292],"reduces":[132],"computational":[134],"complexity":[135],"from":[136],"exponential":[137],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">D<sup>N\u2013D</sup></i>":[140],"linear":[142],"(<italic":[143,228],"\u2013":[146],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">D</i>)":[149],"searches,":[154],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">thereby":[157],"achieving":[158],"significantly":[159],"lower":[160],"error":[162],"compared":[163],"models</i>.":[167],"To":[168],"validate":[169],"effectiveness":[171],"of":[172,200,224,304,329,337],"our":[173,236,330],"algorithm,":[177],"first":[179],"apply":[180],"it":[181],"point-to-point":[183],"communications":[185],"ports,":[189],"deriving":[190],"analytical":[191],"joint":[195],"probability":[196,273],"density":[197],"function":[198],"(PDF)":[199],"channel":[201,256,282],"amplitudes":[202],"outage":[204,272],"probability.":[205],"analysis":[207],"shows":[208],"offers":[213],"tractable":[214,271],"evaluation":[216],"superior":[218],"accuracy,":[219],"particularly":[220],"when":[221],"number":[223],"is":[226],"small":[227],"<":[231],"20).":[232],"Furthermore,":[233],"extend":[235],"framework":[237],"classical":[239],"FAS-assisted":[240],"reconfigurable":[241],"intelligent":[242],"surface":[243],"(FAS-RIS)":[244],"communications,":[245],"where":[246],"interplay":[248],"between":[249],"direct":[250],"RIS-assisted":[252],"links":[253],"complicates":[254],"statistics.":[257],"By":[258],"integrating":[259],"central":[261],"limit":[262],"theorem":[263],"(CLT)":[264],"model,":[268],"derive":[270],"capture":[276],"coupling":[278],"effects":[279],"different":[281],"coefficients.":[283],"Extensive":[284],"numerical":[285],"simulations":[286],"under":[287],"various":[288],"system":[289],"configurations":[290],"demonstrate":[291],"not":[296],"only":[297],"outperforms":[298],"conventional":[299],"constant-correlation":[300],"approaches":[301],"terms":[303],"accuracy":[306],"robustness,":[308],"but":[309],"also":[310],"provides":[311],"reliable":[312],"prediction":[314],"threshold-sensitive":[316],"challenging":[318],"propagation":[319],"environments.":[320],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">These":[323],"results":[324],"underscore":[325],"practical":[327],"value":[328],"design":[334],"optimization":[336],"next-generation":[338],"FAS-based":[339],"wireless":[340],"networks</i>.":[341]},"counts_by_year":[{"year":2026,"cited_by_count":2}],"updated_date":"2026-04-02T15:55:50.835912","created_date":"2025-10-10T00:00:00"}
