{"id":"https://openalex.org/W3082837743","doi":"https://doi.org/10.1142/s1793962320500579","title":"User grouping and optimization-based pilot scheduling for mitigating the pilot contamination in massive multi cell MIMO systems","display_name":"User grouping and optimization-based pilot scheduling for mitigating the pilot contamination in massive multi cell MIMO systems","publication_year":2020,"publication_date":"2020-08-28","ids":{"openalex":"https://openalex.org/W3082837743","doi":"https://doi.org/10.1142/s1793962320500579","mag":"3082837743"},"language":"en","primary_location":{"id":"doi:10.1142/s1793962320500579","is_oa":false,"landing_page_url":"https://doi.org/10.1142/s1793962320500579","pdf_url":null,"source":{"id":"https://openalex.org/S107361000","display_name":"Advances in Complex Systems","issn_l":"0219-5259","issn":["0219-5259","1793-6802","1793-9615","1793-9623"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319815","host_organization_name":"World Scientific","host_organization_lineage":["https://openalex.org/P4310319815"],"host_organization_lineage_names":["World Scientific"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"International Journal of Modeling, Simulation, and Scientific Computing","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/A5050617088","display_name":"Ambala Pradeep Kumar","orcid":"https://orcid.org/0000-0003-1849-9359"},"institutions":[{"id":"https://openalex.org/I28210344","display_name":"Kakatiya University","ror":"https://ror.org/012zpbg81","country_code":"IN","type":"education","lineage":["https://openalex.org/I28210344"]}],"countries":["IN"],"is_corresponding":true,"raw_author_name":"Ambala Pradeep Kumar","raw_affiliation_strings":["Department of Electronics and Communication Engineering, KU College of Engineering and Technology, Kakatiya University, Warangal, Telangana, India"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electronics and Communication Engineering, KU College of Engineering and Technology, Kakatiya University, Warangal, Telangana, India","institution_ids":["https://openalex.org/I28210344"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5063280977","display_name":"Srinivasulu Tadisetty","orcid":"https://orcid.org/0000-0003-0323-1843"},"institutions":[{"id":"https://openalex.org/I28210344","display_name":"Kakatiya University","ror":"https://ror.org/012zpbg81","country_code":"IN","type":"education","lineage":["https://openalex.org/I28210344"]}],"countries":["IN"],"is_corresponding":false,"raw_author_name":"Tadisetty Srinivasulu","raw_affiliation_strings":["Department of Electronics and Communication Engineering, KU College of Engineering and Technology, Kakatiya University, Warangal, Telangana, India"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electronics and Communication Engineering, KU College of Engineering and Technology, Kakatiya University, Warangal, Telangana, India","institution_ids":["https://openalex.org/I28210344"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5050617088"],"corresponding_institution_ids":["https://openalex.org/I28210344"],"apc_list":null,"apc_paid":null,"fwci":0.104,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.43308153,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":94},"biblio":{"volume":"11","issue":"06","first_page":"2050057","last_page":"2050057"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10148","display_name":"Advanced MIMO Systems Optimization","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/T10148","display_name":"Advanced MIMO Systems Optimization","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/T10936","display_name":"Millimeter-Wave Propagation and Modeling","score":0.9951000213623047,"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/T11409","display_name":"Advanced Wireless Network Optimization","score":0.9936000108718872,"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/mimo","display_name":"MIMO","score":0.72879558801651},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7160347700119019},{"id":"https://openalex.org/keywords/scheduling","display_name":"Scheduling (production processes)","score":0.6148044466972351},{"id":"https://openalex.org/keywords/cluster-analysis","display_name":"Cluster analysis","score":0.4897780418395996},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.4151929020881653},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.3957839608192444},{"id":"https://openalex.org/keywords/real-time-computing","display_name":"Real-time computing","score":0.35988685488700867},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.25595778226852417},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.21621298789978027},{"id":"https://openalex.org/keywords/machine-learning","display_name":"Machine learning","score":0.15718016028404236},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.12676605582237244}],"concepts":[{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.72879558801651},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7160347700119019},{"id":"https://openalex.org/C206729178","wikidata":"https://www.wikidata.org/wiki/Q2271896","display_name":"Scheduling (production processes)","level":2,"score":0.6148044466972351},{"id":"https://openalex.org/C73555534","wikidata":"https://www.wikidata.org/wiki/Q622825","display_name":"Cluster analysis","level":2,"score":0.4897780418395996},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.4151929020881653},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.3957839608192444},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.35988685488700867},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.25595778226852417},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.21621298789978027},{"id":"https://openalex.org/C119857082","wikidata":"https://www.wikidata.org/wiki/Q2539","display_name":"Machine learning","level":1,"score":0.15718016028404236},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.12676605582237244},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1142/s1793962320500579","is_oa":false,"landing_page_url":"https://doi.org/10.1142/s1793962320500579","pdf_url":null,"source":{"id":"https://openalex.org/S107361000","display_name":"Advances in Complex Systems","issn_l":"0219-5259","issn":["0219-5259","1793-6802","1793-9615","1793-9623"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319815","host_organization_name":"World Scientific","host_organization_lineage":["https://openalex.org/P4310319815"],"host_organization_lineage_names":["World Scientific"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"International Journal of Modeling, Simulation, and Scientific Computing","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":18,"referenced_works":["https://openalex.org/W1516185633","https://openalex.org/W2040209771","https://openalex.org/W2064075846","https://openalex.org/W2111113050","https://openalex.org/W2126050191","https://openalex.org/W2141682101","https://openalex.org/W2145013959","https://openalex.org/W2147601077","https://openalex.org/W2407842861","https://openalex.org/W2559514807","https://openalex.org/W2593779246","https://openalex.org/W2622795578","https://openalex.org/W2739040955","https://openalex.org/W2784477914","https://openalex.org/W2792090252","https://openalex.org/W2793629470","https://openalex.org/W2800486579","https://openalex.org/W2907403199"],"related_works":["https://openalex.org/W1228726","https://openalex.org/W10348249","https://openalex.org/W4013205","https://openalex.org/W12109514","https://openalex.org/W6056896","https://openalex.org/W13862873","https://openalex.org/W11647294","https://openalex.org/W7287696","https://openalex.org/W909291","https://openalex.org/W2620904"],"abstract_inverted_index":{"Massive":[0],"multiple-input":[1],"multiple-output":[2],"(massive":[3],"MIMO)":[4],"is":[5,29,96,142,152,174],"a":[6],"promising":[7],"approach":[8,55],"in":[9,35,89],"wireless":[10],"communication":[11],"systems":[12],"for":[13,45],"providing":[14],"improved":[15],"link":[16],"reliability":[17],"and":[18,21,77,180,193],"spectral":[19],"efficiency":[20],"it":[22],"helps":[23],"several":[24],"users.":[25],"The":[26,165,182],"main":[27],"aim":[28],"to":[30,86,105],"solve":[31],"pilot":[32,82,94,103,113,140,168],"contamination":[33,95],"issue":[34],"massive":[36],"MIMO":[37],"systems;":[38],"this":[39],"research":[40],"paper":[41,50],"utilizes":[42],"two":[43],"approaches":[44],"reducing":[46],"the":[47,52,91,99,106,116,123,133,137],"contamination.":[48,114],"This":[49],"presents":[51],"user":[53,66,78,118],"grouping":[54,119,125,130],"based":[56,68,144,170,176],"on":[57,69,145,171,177],"sparse":[58],"fuzzy":[59],"C-means":[60],"clustering":[61],"(sparse":[62],"FCM),":[63],"which":[64,90,151],"groups":[65],"parameters":[67,70],"such":[71],"as":[72],"large-scale":[73],"fading":[74],"factor,":[75],"SINR,":[76],"distance.":[79],"Here,":[80],"same":[81],"sequences":[83,104],"are":[84],"assigned":[85],"center":[87],"users":[88,108],"impact":[92],"of":[93,126,136,167,189,196],"limited,":[97],"while":[98],"algorithm":[100],"assigns":[101],"orthogonal":[102],"edge":[107],"that":[109],"suffer":[110],"severely":[111],"from":[112,122],"Therefore,":[115],"proposed":[117,183],"keeps":[120],"away":[121],"inappropriate":[124],"users,":[127],"enabling":[128],"effective":[129],"even":[131],"under":[132],"worst":[134],"situations":[135],"channel.":[138],"Secondly,":[139],"scheduling":[141,169],"done":[143],"elephant":[146,156],"spider":[147,161],"monkey":[148,162],"optimization":[149,158,163],"(ESMO),":[150],"designed":[153],"by":[154],"integrating":[155],"herding":[157],"(EHO)":[159],"into":[160],"(SMO).":[164],"performance":[166],"grouping-based":[172],"ESMO":[173],"evaluated":[175],"achievable":[178,187],"rate":[179,188],"SINR.":[181],"method":[184],"achieves":[185],"maximal":[186,194],"41.29[Formula:":[190],"see":[191,198],"text]bps/Hz":[192],"SINR":[195],"124.31[Formula:":[197],"text]dB.":[199]},"counts_by_year":[{"year":2022,"cited_by_count":1}],"updated_date":"2026-05-21T09:19:25.381259","created_date":"2025-10-10T00:00:00"}