{"id":"https://openalex.org/W2739467324","doi":"https://doi.org/10.1109/iwcmc.2017.7986292","title":"A low complexity channel estimation scheme for Massive MIMO systems","display_name":"A low complexity channel estimation scheme for Massive MIMO systems","publication_year":2017,"publication_date":"2017-06-01","ids":{"openalex":"https://openalex.org/W2739467324","doi":"https://doi.org/10.1109/iwcmc.2017.7986292","mag":"2739467324"},"language":"en","primary_location":{"id":"doi:10.1109/iwcmc.2017.7986292","is_oa":false,"landing_page_url":"https://doi.org/10.1109/iwcmc.2017.7986292","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2017 13th International Wireless Communications and Mobile Computing Conference (IWCMC)","raw_type":"proceedings-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/A5016848044","display_name":"Afonso Ferreira","orcid":"https://orcid.org/0000-0002-1753-0177"},"institutions":[{"id":"https://openalex.org/I83558840","display_name":"Universidade Nova de Lisboa","ror":"https://ror.org/02xankh89","country_code":"PT","type":"education","lineage":["https://openalex.org/I83558840"]}],"countries":["PT"],"is_corresponding":true,"raw_author_name":"Afonso Ferreira","raw_affiliation_strings":["DEE, FCT Universidade Nova de Lisboa, Portugal"],"affiliations":[{"raw_affiliation_string":"DEE, FCT Universidade Nova de Lisboa, Portugal","institution_ids":["https://openalex.org/I83558840"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5069347840","display_name":"Guilherme Gaspar","orcid":"https://orcid.org/0000-0003-1285-5826"},"institutions":[{"id":"https://openalex.org/I83558840","display_name":"Universidade Nova de Lisboa","ror":"https://ror.org/02xankh89","country_code":"PT","type":"education","lineage":["https://openalex.org/I83558840"]}],"countries":["PT"],"is_corresponding":false,"raw_author_name":"Guilherme Gaspar","raw_affiliation_strings":["DEE, FCT Universidade Nova de Lisboa, Portugal"],"affiliations":[{"raw_affiliation_string":"DEE, FCT Universidade Nova de Lisboa, Portugal","institution_ids":["https://openalex.org/I83558840"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5109503804","display_name":"Paulo Montezuma","orcid":null},"institutions":[{"id":"https://openalex.org/I83558840","display_name":"Universidade Nova de Lisboa","ror":"https://ror.org/02xankh89","country_code":"PT","type":"education","lineage":["https://openalex.org/I83558840"]},{"id":"https://openalex.org/I4210120471","display_name":"Instituto de Telecomunica\u00e7\u00f5es","ror":"https://ror.org/02ht4fk33","country_code":"PT","type":"nonprofit","lineage":["https://openalex.org/I4210120471"]},{"id":"https://openalex.org/I4210127031","display_name":"Uninova","ror":"https://ror.org/0373te416","country_code":"PT","type":"funder","lineage":["https://openalex.org/I4210127031"]}],"countries":["PT"],"is_corresponding":false,"raw_author_name":"Paulo Montezuma","raw_affiliation_strings":["DEE, FCT Universidade Nova de Lisboa, Portugal","IT, Instituto de Telecomunica\u00e7\u00f5es Av. Rovisco Pais, Lisboa, Portugal","Quinta da Torre, Uninova Instituto de Desenvolvimento de Novas Tecnologias, Caparica, Portugal"],"affiliations":[{"raw_affiliation_string":"DEE, FCT Universidade Nova de Lisboa, Portugal","institution_ids":["https://openalex.org/I83558840"]},{"raw_affiliation_string":"IT, Instituto de Telecomunica\u00e7\u00f5es Av. Rovisco Pais, Lisboa, Portugal","institution_ids":["https://openalex.org/I4210120471"]},{"raw_affiliation_string":"Quinta da Torre, Uninova Instituto de Desenvolvimento de Novas Tecnologias, Caparica, Portugal","institution_ids":["https://openalex.org/I4210127031","https://openalex.org/I83558840"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5034724801","display_name":"Rui Dinis","orcid":"https://orcid.org/0000-0002-8520-7267"},"institutions":[{"id":"https://openalex.org/I4210120471","display_name":"Instituto de Telecomunica\u00e7\u00f5es","ror":"https://ror.org/02ht4fk33","country_code":"PT","type":"nonprofit","lineage":["https://openalex.org/I4210120471"]},{"id":"https://openalex.org/I83558840","display_name":"Universidade Nova de Lisboa","ror":"https://ror.org/02xankh89","country_code":"PT","type":"education","lineage":["https://openalex.org/I83558840"]}],"countries":["PT"],"is_corresponding":false,"raw_author_name":"Rui Dinis","raw_affiliation_strings":["DEE, FCT Universidade Nova de Lisboa, Portugal","IT, Instituto de Telecomunica\u00e7\u00f5es Av. Rovisco Pais, Lisboa, Portugal"],"affiliations":[{"raw_affiliation_string":"DEE, FCT Universidade Nova de Lisboa, Portugal","institution_ids":["https://openalex.org/I83558840"]},{"raw_affiliation_string":"IT, Instituto de Telecomunica\u00e7\u00f5es Av. Rovisco Pais, Lisboa, Portugal","institution_ids":["https://openalex.org/I4210120471"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5066758733","display_name":"Rodolfo Oliveira","orcid":"https://orcid.org/0000-0001-9181-8438"},"institutions":[{"id":"https://openalex.org/I4210120471","display_name":"Instituto de Telecomunica\u00e7\u00f5es","ror":"https://ror.org/02ht4fk33","country_code":"PT","type":"nonprofit","lineage":["https://openalex.org/I4210120471"]}],"countries":["PT"],"is_corresponding":false,"raw_author_name":"Rodolfo Oliveira","raw_affiliation_strings":["IT, Instituto de Telecomunica\u00e7\u00f5es Av. Rovisco Pais, Lisboa, Portugal"],"affiliations":[{"raw_affiliation_string":"IT, Instituto de Telecomunica\u00e7\u00f5es Av. Rovisco Pais, Lisboa, Portugal","institution_ids":["https://openalex.org/I4210120471"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5016848044"],"corresponding_institution_ids":["https://openalex.org/I83558840"],"apc_list":null,"apc_paid":null,"fwci":0.1469,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.50041416,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":94},"biblio":{"volume":"61","issue":null,"first_page":"234","last_page":"239"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10125","display_name":"Advanced Wireless Communication Techniques","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/T10125","display_name":"Advanced Wireless Communication Techniques","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/T10148","display_name":"Advanced MIMO Systems Optimization","score":0.9998000264167786,"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":0.9997000098228455,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/mimo","display_name":"MIMO","score":0.8258283138275146},{"id":"https://openalex.org/keywords/telecommunications-link","display_name":"Telecommunications link","score":0.7506740093231201},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6824154257774353},{"id":"https://openalex.org/keywords/multi-user-mimo","display_name":"Multi-user MIMO","score":0.574987530708313},{"id":"https://openalex.org/keywords/channel-state-information","display_name":"Channel state information","score":0.5620354413986206},{"id":"https://openalex.org/keywords/mimo-ofdm","display_name":"MIMO-OFDM","score":0.5104566812515259},{"id":"https://openalex.org/keywords/inversion","display_name":"Inversion (geology)","score":0.5062577128410339},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.49575504660606384},{"id":"https://openalex.org/keywords/base-station","display_name":"Base station","score":0.4889003336429596},{"id":"https://openalex.org/keywords/computational-complexity-theory","display_name":"Computational complexity theory","score":0.4784529209136963},{"id":"https://openalex.org/keywords/precoding","display_name":"Precoding","score":0.4617948532104492},{"id":"https://openalex.org/keywords/orthogonal-frequency-division-multiplexing","display_name":"Orthogonal frequency-division multiplexing","score":0.45121079683303833},{"id":"https://openalex.org/keywords/spatial-multiplexing","display_name":"Spatial multiplexing","score":0.44590485095977783},{"id":"https://openalex.org/keywords/multiplexing","display_name":"Multiplexing","score":0.44252049922943115},{"id":"https://openalex.org/keywords/minimum-mean-square-error","display_name":"Minimum mean square error","score":0.42894551157951355},{"id":"https://openalex.org/keywords/estimator","display_name":"Estimator","score":0.4173470735549927},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.41633957624435425},{"id":"https://openalex.org/keywords/real-time-computing","display_name":"Real-time computing","score":0.3523138761520386},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.34384244680404663},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.31969213485717773},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.27921852469444275},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.16717100143432617},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.0983259379863739}],"concepts":[{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.8258283138275146},{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.7506740093231201},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6824154257774353},{"id":"https://openalex.org/C91330434","wikidata":"https://www.wikidata.org/wiki/Q738298","display_name":"Multi-user MIMO","level":4,"score":0.574987530708313},{"id":"https://openalex.org/C148063708","wikidata":"https://www.wikidata.org/wiki/Q5072511","display_name":"Channel state information","level":3,"score":0.5620354413986206},{"id":"https://openalex.org/C130946814","wikidata":"https://www.wikidata.org/wiki/Q5988271","display_name":"MIMO-OFDM","level":4,"score":0.5104566812515259},{"id":"https://openalex.org/C1893757","wikidata":"https://www.wikidata.org/wiki/Q3653001","display_name":"Inversion (geology)","level":3,"score":0.5062577128410339},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.49575504660606384},{"id":"https://openalex.org/C68649174","wikidata":"https://www.wikidata.org/wiki/Q1379116","display_name":"Base station","level":2,"score":0.4889003336429596},{"id":"https://openalex.org/C179799912","wikidata":"https://www.wikidata.org/wiki/Q205084","display_name":"Computational complexity theory","level":2,"score":0.4784529209136963},{"id":"https://openalex.org/C160562895","wikidata":"https://www.wikidata.org/wiki/Q7239557","display_name":"Precoding","level":4,"score":0.4617948532104492},{"id":"https://openalex.org/C40409654","wikidata":"https://www.wikidata.org/wiki/Q375889","display_name":"Orthogonal frequency-division multiplexing","level":3,"score":0.45121079683303833},{"id":"https://openalex.org/C85884896","wikidata":"https://www.wikidata.org/wiki/Q7574075","display_name":"Spatial multiplexing","level":4,"score":0.44590485095977783},{"id":"https://openalex.org/C19275194","wikidata":"https://www.wikidata.org/wiki/Q222903","display_name":"Multiplexing","level":2,"score":0.44252049922943115},{"id":"https://openalex.org/C90652560","wikidata":"https://www.wikidata.org/wiki/Q11091747","display_name":"Minimum mean square error","level":3,"score":0.42894551157951355},{"id":"https://openalex.org/C185429906","wikidata":"https://www.wikidata.org/wiki/Q1130160","display_name":"Estimator","level":2,"score":0.4173470735549927},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.41633957624435425},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.3523138761520386},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.34384244680404663},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.31969213485717773},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.27921852469444275},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.16717100143432617},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.0983259379863739},{"id":"https://openalex.org/C151730666","wikidata":"https://www.wikidata.org/wiki/Q7205","display_name":"Paleontology","level":1,"score":0.0},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0},{"id":"https://openalex.org/C109007969","wikidata":"https://www.wikidata.org/wiki/Q749565","display_name":"Structural basin","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/iwcmc.2017.7986292","is_oa":false,"landing_page_url":"https://doi.org/10.1109/iwcmc.2017.7986292","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2017 13th International Wireless Communications and Mobile Computing Conference (IWCMC)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.4699999988079071,"id":"https://metadata.un.org/sdg/7","display_name":"Affordable and clean energy"},{"score":0.4000000059604645,"id":"https://metadata.un.org/sdg/12","display_name":"Responsible consumption and production"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":15,"referenced_works":["https://openalex.org/W1971443733","https://openalex.org/W2083020163","https://openalex.org/W2098257210","https://openalex.org/W2103699908","https://openalex.org/W2103972037","https://openalex.org/W2112323603","https://openalex.org/W2114004090","https://openalex.org/W2138706041","https://openalex.org/W2154395274","https://openalex.org/W2168468518","https://openalex.org/W2171387626","https://openalex.org/W2461591763","https://openalex.org/W2484259350","https://openalex.org/W4205533812","https://openalex.org/W6677178498"],"related_works":["https://openalex.org/W1517014499","https://openalex.org/W2402142910","https://openalex.org/W4383558088","https://openalex.org/W2101125413","https://openalex.org/W2132885812","https://openalex.org/W1972642807","https://openalex.org/W2216248654","https://openalex.org/W2141031289","https://openalex.org/W3146142998","https://openalex.org/W2037344163"],"abstract_inverted_index":{"It":[0,136],"is":[1,77,116,137],"well-known":[2],"that":[3,26,119,145],"Massive":[4,17],"MIMO":[5,18],"systems":[6],"(Multiple-input":[7],"multiple-output)":[8],"have":[9],"high":[10],"potential":[11],"for":[12,25,44,65],"future":[13],"wireless":[14],"broadband":[15],"systems.":[16],"(m-MIMO)":[19],"relies":[20],"on":[21,112],"spatial":[22],"multiplexing,":[23],"and":[24,38,86],"reason":[27],"the":[28,69,75],"base":[29],"station":[30],"needs":[31],"a":[32,55,61,106,140],"precise":[33],"channel":[34,45,108,134],"knowledge":[35],"at":[36],"uplink":[37],"downlink.":[39],"Pilots":[40],"can":[41,59],"be":[42,60,99],"used":[43,73],"state":[46],"information":[47],"(CSI)":[48],"estimation,":[49],"but":[50],"common":[51],"estimation":[52,109],"processes":[53],"imply":[54],"matrix":[56,95],"inversion":[57,96],"which":[58],"heavy":[62],"computational":[63,82],"process":[64],"m-MIMO":[66],"system":[67],"where":[68],"number":[70],"of":[71,92,142],"antennas":[72],"in":[74,102],"communication":[76],"very":[78],"high.":[79],"To":[80],"alleviate":[81],"requirements,":[83],"reduce":[84],"latency":[85],"to":[87],"improve":[88],"battery":[89],"life":[90],"capacity":[91],"mobile":[93],"devices":[94],"operations":[97],"should":[98],"avoided.":[100],"Having":[101],"mind":[103],"these":[104],"constrains,":[105],"new":[107],"method":[110],"based":[111],"Zadoff-Chu":[113],"(ZC)":[114],"sequences":[115],"presented":[117,139],"here,":[118],"achieves":[120],"similar":[121],"or":[122,129],"better":[123],"performance":[124,143],"than":[125],"least":[126],"squares":[127],"(LS)":[128],"minimum":[130],"mean-Square":[131],"Error":[132],"(MMSE)":[133],"estimators.":[135],"also":[138],"set":[141],"results":[144],"sustain":[146],"our":[147],"assumption.":[148]},"counts_by_year":[{"year":2020,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}