{"id":"https://openalex.org/W1821108955","doi":"https://doi.org/10.1109/pimrc.2014.7136209","title":"Low complexity adaptive channel estimation and QR decomposition for an LTE-A downlink","display_name":"Low complexity adaptive channel estimation and QR decomposition for an LTE-A downlink","publication_year":2014,"publication_date":"2014-09-01","ids":{"openalex":"https://openalex.org/W1821108955","doi":"https://doi.org/10.1109/pimrc.2014.7136209","mag":"1821108955"},"language":"en","primary_location":{"id":"doi:10.1109/pimrc.2014.7136209","is_oa":false,"landing_page_url":"https://doi.org/10.1109/pimrc.2014.7136209","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2014 IEEE 25th Annual International Symposium on Personal, Indoor, and Mobile Radio Communication (PIMRC)","raw_type":"proceedings-article"},"type":"conference-paper","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://lup.lub.lu.se/record/4469005","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5013357202","display_name":"Rakesh Gangarajaiah","orcid":"https://orcid.org/0000-0002-3839-4506"},"institutions":[{"id":"https://openalex.org/I187531555","display_name":"Lund University","ror":"https://ror.org/012a77v79","country_code":"SE","type":"education","lineage":["https://openalex.org/I187531555"]}],"countries":["SE"],"is_corresponding":false,"raw_author_name":"Rakesh Gangarajaiah","raw_affiliation_strings":["Department of Electrical and Information Technology, Lund University, Sweden","Department of Electrical & Information Technology, Lund University, Sweden"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electrical and Information Technology, Lund University, Sweden","institution_ids":["https://openalex.org/I187531555"]},{"raw_affiliation_string":"Department of Electrical & Information Technology, Lund University, Sweden","institution_ids":["https://openalex.org/I187531555"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5084408140","display_name":"Peter Nilsson","orcid":"https://orcid.org/0000-0002-4657-8532"},"institutions":[{"id":"https://openalex.org/I187531555","display_name":"Lund University","ror":"https://ror.org/012a77v79","country_code":"SE","type":"education","lineage":["https://openalex.org/I187531555"]}],"countries":["SE"],"is_corresponding":false,"raw_author_name":"Peter Nilsson","raw_affiliation_strings":["Department of Electrical and Information Technology, Lund University, Sweden","Department of Electrical & Information Technology, Lund University, Sweden"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electrical and Information Technology, Lund University, Sweden","institution_ids":["https://openalex.org/I187531555"]},{"raw_affiliation_string":"Department of Electrical & Information Technology, Lund University, Sweden","institution_ids":["https://openalex.org/I187531555"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5045195961","display_name":"Ove Edfors","orcid":"https://orcid.org/0000-0001-5966-8468"},"institutions":[{"id":"https://openalex.org/I187531555","display_name":"Lund University","ror":"https://ror.org/012a77v79","country_code":"SE","type":"education","lineage":["https://openalex.org/I187531555"]}],"countries":["SE"],"is_corresponding":false,"raw_author_name":"Ove Edfors","raw_affiliation_strings":["Department of Electrical and Information Technology, Lund University, Sweden","Department of Electrical & Information Technology, Lund University, Sweden"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electrical and Information Technology, Lund University, Sweden","institution_ids":["https://openalex.org/I187531555"]},{"raw_affiliation_string":"Department of Electrical & Information Technology, Lund University, Sweden","institution_ids":["https://openalex.org/I187531555"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5100322345","display_name":"Liang Liu","orcid":"https://orcid.org/0000-0001-9491-8821"},"institutions":[{"id":"https://openalex.org/I187531555","display_name":"Lund University","ror":"https://ror.org/012a77v79","country_code":"SE","type":"education","lineage":["https://openalex.org/I187531555"]}],"countries":["SE"],"is_corresponding":false,"raw_author_name":"Liang Liu","raw_affiliation_strings":["Department of Electrical and Information Technology, Lund University, Sweden","Department of Electrical & Information Technology, Lund University, Sweden"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electrical and Information Technology, Lund University, Sweden","institution_ids":["https://openalex.org/I187531555"]},{"raw_affiliation_string":"Department of Electrical & Information Technology, Lund University, Sweden","institution_ids":["https://openalex.org/I187531555"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I187531555"],"apc_list":null,"apc_paid":null,"fwci":1.2237,"has_fulltext":false,"cited_by_count":7,"citation_normalized_percentile":{"value":0.72938108,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":97},"biblio":{"volume":null,"issue":null,"first_page":"459","last_page":"463"},"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/T10575","display_name":"Wireless Communication Networks Research","score":0.9993000030517578,"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"}},{"id":"https://openalex.org/T10148","display_name":"Advanced MIMO Systems Optimization","score":0.9976999759674072,"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/subcarrier","display_name":"Subcarrier","score":0.8167248964309692},{"id":"https://openalex.org/keywords/computational-complexity-theory","display_name":"Computational complexity theory","score":0.7290055751800537},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6917660236358643},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.6360019445419312},{"id":"https://openalex.org/keywords/qr-decomposition","display_name":"QR decomposition","score":0.6314232349395752},{"id":"https://openalex.org/keywords/telecommunications-link","display_name":"Telecommunications link","score":0.6273940205574036},{"id":"https://openalex.org/keywords/reduction","display_name":"Reduction (mathematics)","score":0.6270861029624939},{"id":"https://openalex.org/keywords/discrete-fourier-transform","display_name":"Discrete Fourier transform (general)","score":0.6238187551498413},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.5930942893028259},{"id":"https://openalex.org/keywords/orthogonal-frequency-division-multiplexing","display_name":"Orthogonal frequency-division multiplexing","score":0.5277999639511108},{"id":"https://openalex.org/keywords/frequency-domain","display_name":"Frequency domain","score":0.41034549474716187},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.2129494547843933},{"id":"https://openalex.org/keywords/fourier-transform","display_name":"Fourier transform","score":0.18367868661880493},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.14879244565963745},{"id":"https://openalex.org/keywords/short-time-fourier-transform","display_name":"Short-time Fourier transform","score":0.09719666838645935},{"id":"https://openalex.org/keywords/fourier-analysis","display_name":"Fourier analysis","score":0.06913352012634277}],"concepts":[{"id":"https://openalex.org/C198329298","wikidata":"https://www.wikidata.org/wiki/Q586358","display_name":"Subcarrier","level":4,"score":0.8167248964309692},{"id":"https://openalex.org/C179799912","wikidata":"https://www.wikidata.org/wiki/Q205084","display_name":"Computational complexity theory","level":2,"score":0.7290055751800537},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6917660236358643},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.6360019445419312},{"id":"https://openalex.org/C188060507","wikidata":"https://www.wikidata.org/wiki/Q653242","display_name":"QR decomposition","level":3,"score":0.6314232349395752},{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.6273940205574036},{"id":"https://openalex.org/C111335779","wikidata":"https://www.wikidata.org/wiki/Q3454686","display_name":"Reduction (mathematics)","level":2,"score":0.6270861029624939},{"id":"https://openalex.org/C57733114","wikidata":"https://www.wikidata.org/wiki/Q1006032","display_name":"Discrete Fourier transform (general)","level":5,"score":0.6238187551498413},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.5930942893028259},{"id":"https://openalex.org/C40409654","wikidata":"https://www.wikidata.org/wiki/Q375889","display_name":"Orthogonal frequency-division multiplexing","level":3,"score":0.5277999639511108},{"id":"https://openalex.org/C19118579","wikidata":"https://www.wikidata.org/wiki/Q786423","display_name":"Frequency domain","level":2,"score":0.41034549474716187},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.2129494547843933},{"id":"https://openalex.org/C102519508","wikidata":"https://www.wikidata.org/wiki/Q6520159","display_name":"Fourier transform","level":2,"score":0.18367868661880493},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.14879244565963745},{"id":"https://openalex.org/C166386157","wikidata":"https://www.wikidata.org/wiki/Q1477735","display_name":"Short-time Fourier transform","level":4,"score":0.09719666838645935},{"id":"https://openalex.org/C203024314","wikidata":"https://www.wikidata.org/wiki/Q1365258","display_name":"Fourier analysis","level":3,"score":0.06913352012634277},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C158693339","wikidata":"https://www.wikidata.org/wiki/Q190524","display_name":"Eigenvalues and eigenvectors","level":2,"score":0.0},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.0},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/pimrc.2014.7136209","is_oa":false,"landing_page_url":"https://doi.org/10.1109/pimrc.2014.7136209","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2014 IEEE 25th Annual International Symposium on Personal, Indoor, and Mobile Radio Communication (PIMRC)","raw_type":"proceedings-article"},{"id":"pmh:oai:lup.lub.lu.se:ac870044-57f1-4f5a-bbc0-2f839f99ea61","is_oa":true,"landing_page_url":"https://lup.lub.lu.se/record/4469005","pdf_url":null,"source":{"id":"https://openalex.org/S4306400536","display_name":"Lund University Publications (Lund University)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I187531555","host_organization_name":"Lund University","host_organization_lineage":["https://openalex.org/I187531555"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"info:eu-repo/semantics/conferencePaper"}],"best_oa_location":{"id":"pmh:oai:lup.lub.lu.se:ac870044-57f1-4f5a-bbc0-2f839f99ea61","is_oa":true,"landing_page_url":"https://lup.lub.lu.se/record/4469005","pdf_url":null,"source":{"id":"https://openalex.org/S4306400536","display_name":"Lund University Publications (Lund University)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I187531555","host_organization_name":"Lund University","host_organization_lineage":["https://openalex.org/I187531555"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"info:eu-repo/semantics/conferencePaper"},"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":20,"referenced_works":["https://openalex.org/W1946663460","https://openalex.org/W1981745143","https://openalex.org/W1984913528","https://openalex.org/W1989325643","https://openalex.org/W2025988951","https://openalex.org/W2088094773","https://openalex.org/W2103699908","https://openalex.org/W2103925854","https://openalex.org/W2104176873","https://openalex.org/W2114837249","https://openalex.org/W2114953926","https://openalex.org/W2119204729","https://openalex.org/W2130467968","https://openalex.org/W2149295870","https://openalex.org/W2159008902","https://openalex.org/W2339410153","https://openalex.org/W2798909945","https://openalex.org/W3140440502","https://openalex.org/W6646557821","https://openalex.org/W6675859611"],"related_works":["https://openalex.org/W2172159377","https://openalex.org/W2091769028","https://openalex.org/W2128109309","https://openalex.org/W2541629253","https://openalex.org/W2734326052","https://openalex.org/W2586951184","https://openalex.org/W2005169228","https://openalex.org/W4396696848","https://openalex.org/W2048633043","https://openalex.org/W1971246756"],"abstract_inverted_index":{"This":[0],"paper":[1],"presents":[2],"a":[3,52,68,102],"link":[4],"adaptive":[5],"processor":[6,23],"to":[7,32,61,66,94],"perform":[8],"low-complexity":[9],"channel":[10,31,63,74,88,97,111],"estimation":[11],"and":[12,65],"QR":[13],"decomposition":[14],"(QRD)":[15],"in":[16,37,106,114],"Long":[17],"Term":[18],"Evolution-Advanced":[19],"(LTE-A)":[20],"receivers.":[21],"The":[22],"utilizes":[24],"frequency":[25],"domain":[26],"correlation":[27],"of":[28,71,86,104],"the":[29,38,84,115],"propagation":[30],"adaptively":[33,92],"avoid":[34],"unnecessary":[35],"computations":[36],"received":[39],"signal":[40],"processing,":[41],"achieving":[42],"significant":[43],"complexity":[44,79,108],"reduction":[45,103],"with":[46],"negligible":[47],"performance":[48],"loss.":[49],"More":[50],"specifically,":[51],"windowed":[53],"Discrete":[54],"Fourier":[55],"transform":[56],"(DFT)":[57],"algorithm":[58],"is":[59],"used":[60],"detect":[62],"conditions":[64],"compute":[67],"minimum":[69],"number":[70],"sparse":[72],"subcarrier":[73,87],"estimates":[75,89],"required":[76],"for":[77,109],"low":[78],"linear":[80],"QRD":[81],"interpolation.":[82],"Furthermore,":[83],"sparsity":[85],"can":[90],"be":[91],"changed":[93],"handle":[95],"different":[96,110],"conditions.":[98],"Simulation":[99],"results":[100],"demonstrate":[101],"40%-80%":[105],"computational":[107],"models":[112],"specified":[113],"LTE-A":[116],"standard.":[117]},"counts_by_year":[{"year":2024,"cited_by_count":1},{"year":2023,"cited_by_count":2},{"year":2018,"cited_by_count":1},{"year":2017,"cited_by_count":3}],"updated_date":"2026-07-29T14:22:42.915294","created_date":"2025-10-10T00:00:00"}
