{"id":"https://openalex.org/W2290481321","doi":"https://doi.org/10.1109/apsipa.2015.7415418","title":"MIMO-OFDM pilot symbol design for sparse channel estimation","display_name":"MIMO-OFDM pilot symbol design for sparse channel estimation","publication_year":2015,"publication_date":"2015-12-01","ids":{"openalex":"https://openalex.org/W2290481321","doi":"https://doi.org/10.1109/apsipa.2015.7415418","mag":"2290481321"},"language":"en","primary_location":{"id":"doi:10.1109/apsipa.2015.7415418","is_oa":false,"landing_page_url":"https://doi.org/10.1109/apsipa.2015.7415418","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2015 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA)","raw_type":"proceedings-article"},"type":"conference-paper","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/A5032336244","display_name":"Roozbeh Mohammadian","orcid":null},"institutions":[{"id":"https://openalex.org/I133529467","display_name":"Sharif University of Technology","ror":"https://ror.org/024c2fq17","country_code":"IR","type":"education","lineage":["https://openalex.org/I133529467"]}],"countries":["IR"],"is_corresponding":false,"raw_author_name":"Roozbeh Mohammadian","raw_affiliation_strings":["Department of Electrical Engineering, Sharif University of Technology"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering, Sharif University of Technology","institution_ids":["https://openalex.org/I133529467"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5020881664","display_name":"Arash Amini","orcid":"https://orcid.org/0000-0002-7082-9581"},"institutions":[{"id":"https://openalex.org/I133529467","display_name":"Sharif University of Technology","ror":"https://ror.org/024c2fq17","country_code":"IR","type":"education","lineage":["https://openalex.org/I133529467"]}],"countries":["IR"],"is_corresponding":false,"raw_author_name":"Arash Amini","raw_affiliation_strings":["Department of Electrical Engineering, Sharif University of Technology"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering, Sharif University of Technology","institution_ids":["https://openalex.org/I133529467"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5016732612","display_name":"Babak Hossein Khalaj","orcid":"https://orcid.org/0000-0002-9289-2338"},"institutions":[{"id":"https://openalex.org/I133529467","display_name":"Sharif University of Technology","ror":"https://ror.org/024c2fq17","country_code":"IR","type":"education","lineage":["https://openalex.org/I133529467"]}],"countries":["IR"],"is_corresponding":false,"raw_author_name":"Babak H. Khalaj","raw_affiliation_strings":["Department of Electrical Engineering, Sharif University of Technology"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering, Sharif University of Technology","institution_ids":["https://openalex.org/I133529467"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5056353424","display_name":"Naeimeh Omidvar","orcid":"https://orcid.org/0000-0002-0269-3088"},"institutions":[{"id":"https://openalex.org/I133529467","display_name":"Sharif University of Technology","ror":"https://ror.org/024c2fq17","country_code":"IR","type":"education","lineage":["https://openalex.org/I133529467"]},{"id":"https://openalex.org/I200769079","display_name":"Hong Kong University of Science and Technology","ror":"https://ror.org/00q4vv597","country_code":"HK","type":"education","lineage":["https://openalex.org/I200769079"]}],"countries":["HK","IR"],"is_corresponding":false,"raw_author_name":"Naeimeh Omidvar","raw_affiliation_strings":["Department of Electrical Engineering, Sharif University of Technology","Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering, Sharif University of Technology","institution_ids":["https://openalex.org/I133529467"]},{"raw_affiliation_string":"Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology","institution_ids":["https://openalex.org/I200769079"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":6,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"975","last_page":"980"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10500","display_name":"Sparse and Compressive Sensing Techniques","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/2206","display_name":"Computational Mechanics"},"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/T10500","display_name":"Sparse and Compressive Sensing Techniques","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/2206","display_name":"Computational Mechanics"},"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/T10125","display_name":"Advanced Wireless Communication Techniques","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/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"}}],"keywords":[{"id":"https://openalex.org/keywords/mimo","display_name":"MIMO","score":0.7329477667808533},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.688635528087616},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6312234401702881},{"id":"https://openalex.org/keywords/orthogonal-frequency-division-multiplexing","display_name":"Orthogonal frequency-division multiplexing","score":0.6178319454193115},{"id":"https://openalex.org/keywords/compressed-sensing","display_name":"Compressed sensing","score":0.550689697265625},{"id":"https://openalex.org/keywords/coherence","display_name":"Coherence (philosophical gambling strategy)","score":0.5466965436935425},{"id":"https://openalex.org/keywords/mimo-ofdm","display_name":"MIMO-OFDM","score":0.5215423107147217},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.46704453229904175},{"id":"https://openalex.org/keywords/mutual-coherence","display_name":"Mutual coherence","score":0.45348450541496277},{"id":"https://openalex.org/keywords/constraint","display_name":"Constraint (computer-aided design)","score":0.42208772897720337},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.3722188174724579},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.24993553757667542},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.20029863715171814},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.07123631238937378}],"concepts":[{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.7329477667808533},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.688635528087616},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6312234401702881},{"id":"https://openalex.org/C40409654","wikidata":"https://www.wikidata.org/wiki/Q375889","display_name":"Orthogonal frequency-division multiplexing","level":3,"score":0.6178319454193115},{"id":"https://openalex.org/C124851039","wikidata":"https://www.wikidata.org/wiki/Q2665459","display_name":"Compressed sensing","level":2,"score":0.550689697265625},{"id":"https://openalex.org/C2781181686","wikidata":"https://www.wikidata.org/wiki/Q4226068","display_name":"Coherence (philosophical gambling strategy)","level":2,"score":0.5466965436935425},{"id":"https://openalex.org/C130946814","wikidata":"https://www.wikidata.org/wiki/Q5988271","display_name":"MIMO-OFDM","level":4,"score":0.5215423107147217},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.46704453229904175},{"id":"https://openalex.org/C45900066","wikidata":"https://www.wikidata.org/wiki/Q6944191","display_name":"Mutual coherence","level":3,"score":0.45348450541496277},{"id":"https://openalex.org/C2776036281","wikidata":"https://www.wikidata.org/wiki/Q48769818","display_name":"Constraint (computer-aided design)","level":2,"score":0.42208772897720337},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.3722188174724579},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.24993553757667542},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.20029863715171814},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.07123631238937378},{"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/apsipa.2015.7415418","is_oa":false,"landing_page_url":"https://doi.org/10.1109/apsipa.2015.7415418","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2015 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA)","raw_type":"proceedings-article"},{"id":"pmh:oai:repository.hkust.edu.hk:1783.1-80492","is_oa":false,"landing_page_url":"http://repository.hkust.edu.hk/ir/Record/1783.1-80492","pdf_url":null,"source":{"id":"https://openalex.org/S4306401796","display_name":"Rare & Special e-Zone (The Hong Kong University of Science and Technology)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I200769079","host_organization_name":"Hong Kong University of Science and Technology","host_organization_lineage":["https://openalex.org/I200769079"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Conference paper"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":19,"referenced_works":["https://openalex.org/W1999833814","https://openalex.org/W2032631251","https://openalex.org/W2108672684","https://openalex.org/W2116148865","https://openalex.org/W2117698628","https://openalex.org/W2123944717","https://openalex.org/W2127535650","https://openalex.org/W2129108650","https://openalex.org/W2131665779","https://openalex.org/W2133698785","https://openalex.org/W2137628444","https://openalex.org/W2138020668","https://openalex.org/W2141682101","https://openalex.org/W2147601077","https://openalex.org/W2161976586","https://openalex.org/W2164452299","https://openalex.org/W2171075378","https://openalex.org/W2296616510","https://openalex.org/W4250955649"],"related_works":["https://openalex.org/W2117029045","https://openalex.org/W2013554099","https://openalex.org/W2366188968","https://openalex.org/W2159772567","https://openalex.org/W2904632759","https://openalex.org/W2938353867","https://openalex.org/W2188042986","https://openalex.org/W2539022530","https://openalex.org/W4310679452","https://openalex.org/W3135825101"],"abstract_inverted_index":{"Channel":[0],"equalization":[1],"is":[2,77,82,94,145,157],"a":[3,69,146,152],"crucial":[4],"part":[5],"of":[6,24,54,68,74,101,106,123,163],"the":[7,22,43,48,52,72,87,97,103,107,112,120,135,142,161,164],"OFDM":[8],"communications":[9],"protocols,":[10],"which":[11],"in":[12,28,38,86,173],"turn":[13],"requires":[14],"channel":[15,33,70],"estimation.":[16,34],"In":[17],"this":[18],"paper,":[19],"we":[20,116,131,149],"consider":[21],"problem":[23],"orthogonal":[25],"pilot":[26,36,92,113,136],"design":[27,37,93],"MIMO-OFDM":[29],"systems":[30],"for":[31,60,127,160],"sparse":[32],"The":[35],"MIMO":[39],"scenarios":[40],"compared":[41],"to":[42,118,151],"conventional":[44],"SISO":[45],"case":[46],"has":[47],"additional":[49],"constraint":[50],"that":[51],"capability":[53],"recovery":[55],"should":[56],"be":[57],"uniformly":[58],"provided":[59],"all":[61,128],"single":[62],"channels.":[63,129],"For":[64],"instance,":[65],"perfect":[66],"estimation":[67],"at":[71],"cost":[73],"another":[75],"one":[76],"not":[78],"permitted.":[79],"This":[80],"requirement":[81],"even":[83],"more":[84],"significant":[85],"emerging":[88],"Massive-MIMO":[89],"systems.":[90],"Our":[91],"based":[95],"on":[96],"compressed":[98],"sensing":[99],"technique":[100],"minimizing":[102],"coherence":[104,121],"measure":[105],"Fourier":[108],"submatrix":[109],"associated":[110],"with":[111],"subcarriers.":[114],"However,":[115],"desire":[117],"minimize":[119],"value":[122],"such":[124],"matrices":[125],"simultaneously":[126],"Here,":[130],"optimize":[132],"over":[133],"both":[134],"locations":[137],"and":[138],"values.":[139],"As":[140],"finding":[141],"global":[143],"minimizer":[144],"combinatorial":[147],"problem,":[148],"resort":[150],"greedy":[153],"method.":[154],"Although":[155],"there":[156],"no":[158],"guarantee":[159],"optimality":[162],"achieved":[165],"patterns,":[166],"our":[167],"simulation":[168],"results":[169],"confirm":[170],"their":[171],"suitability":[172],"practice.":[174]},"counts_by_year":[{"year":2023,"cited_by_count":1},{"year":2022,"cited_by_count":1},{"year":2019,"cited_by_count":3},{"year":2016,"cited_by_count":1}],"updated_date":"2026-07-14T23:27:15.235271","created_date":"2025-10-10T00:00:00"}
