{"id":"https://openalex.org/W2167836211","doi":"https://doi.org/10.1109/pimrc.2007.4394225","title":"Multi-User Channel Estimation in a 4G OFDM System","display_name":"Multi-User Channel Estimation in a 4G OFDM System","publication_year":2007,"publication_date":"2007-01-01","ids":{"openalex":"https://openalex.org/W2167836211","doi":"https://doi.org/10.1109/pimrc.2007.4394225","mag":"2167836211"},"language":"en","primary_location":{"id":"doi:10.1109/pimrc.2007.4394225","is_oa":false,"landing_page_url":"https://doi.org/10.1109/pimrc.2007.4394225","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2007 IEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications","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/A5011230217","display_name":"Ashraf Tahat","orcid":"https://orcid.org/0000-0002-1691-446X"},"institutions":[{"id":"https://openalex.org/I158749337","display_name":"Princess Sumaya University for Technology","ror":"https://ror.org/01jy46q10","country_code":"JO","type":"education","lineage":["https://openalex.org/I158749337"]}],"countries":["JO"],"is_corresponding":true,"raw_author_name":"Ashraf A. Tahat","raw_affiliation_strings":["School of Electrical Engineering, Princess Sumaya University for Technology, Amman, Jordan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Electrical Engineering, Princess Sumaya University for Technology, Amman, Jordan","institution_ids":["https://openalex.org/I158749337"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5011230217"],"corresponding_institution_ids":["https://openalex.org/I158749337"],"apc_list":null,"apc_paid":null,"fwci":1.9965,"has_fulltext":false,"cited_by_count":6,"citation_normalized_percentile":{"value":0.86740618,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":94},"biblio":{"volume":"5","issue":null,"first_page":"1","last_page":"5"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10125","display_name":"Advanced Wireless Communication Techniques","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/T10125","display_name":"Advanced Wireless Communication Techniques","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/T10575","display_name":"Wireless Communication Networks Research","score":0.9998999834060669,"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/T11873","display_name":"PAPR reduction in OFDM","score":0.9994999766349792,"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/orthogonal-frequency-division-multiplexing","display_name":"Orthogonal frequency-division multiplexing","score":0.7878347635269165},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7280154228210449},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.6548793911933899},{"id":"https://openalex.org/keywords/extrapolation","display_name":"Extrapolation","score":0.6351431012153625},{"id":"https://openalex.org/keywords/fast-fourier-transform","display_name":"Fast Fourier transform","score":0.5879345536231995},{"id":"https://openalex.org/keywords/interpolation","display_name":"Interpolation (computer graphics)","score":0.5577949285507202},{"id":"https://openalex.org/keywords/computational-complexity-theory","display_name":"Computational complexity theory","score":0.5475651621818542},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.5023922920227051},{"id":"https://openalex.org/keywords/mimo","display_name":"MIMO","score":0.49374279379844666},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.4492531716823578},{"id":"https://openalex.org/keywords/mimo-ofdm","display_name":"MIMO-OFDM","score":0.4407520294189453},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.4163585901260376},{"id":"https://openalex.org/keywords/real-time-computing","display_name":"Real-time computing","score":0.3695123791694641},{"id":"https://openalex.org/keywords/computer-engineering","display_name":"Computer engineering","score":0.35846078395843506},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.1786532700061798},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.16655346751213074},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.14875945448875427},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.1187296211719513}],"concepts":[{"id":"https://openalex.org/C40409654","wikidata":"https://www.wikidata.org/wiki/Q375889","display_name":"Orthogonal frequency-division multiplexing","level":3,"score":0.7878347635269165},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7280154228210449},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.6548793911933899},{"id":"https://openalex.org/C132459708","wikidata":"https://www.wikidata.org/wiki/Q744069","display_name":"Extrapolation","level":2,"score":0.6351431012153625},{"id":"https://openalex.org/C75172450","wikidata":"https://www.wikidata.org/wiki/Q623950","display_name":"Fast Fourier transform","level":2,"score":0.5879345536231995},{"id":"https://openalex.org/C137800194","wikidata":"https://www.wikidata.org/wiki/Q11713455","display_name":"Interpolation (computer graphics)","level":3,"score":0.5577949285507202},{"id":"https://openalex.org/C179799912","wikidata":"https://www.wikidata.org/wiki/Q205084","display_name":"Computational complexity theory","level":2,"score":0.5475651621818542},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.5023922920227051},{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.49374279379844666},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.4492531716823578},{"id":"https://openalex.org/C130946814","wikidata":"https://www.wikidata.org/wiki/Q5988271","display_name":"MIMO-OFDM","level":4,"score":0.4407520294189453},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.4163585901260376},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.3695123791694641},{"id":"https://openalex.org/C113775141","wikidata":"https://www.wikidata.org/wiki/Q428691","display_name":"Computer engineering","level":1,"score":0.35846078395843506},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.1786532700061798},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.16655346751213074},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.14875945448875427},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.1187296211719513},{"id":"https://openalex.org/C126042441","wikidata":"https://www.wikidata.org/wiki/Q1324888","display_name":"Frame (networking)","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/pimrc.2007.4394225","is_oa":false,"landing_page_url":"https://doi.org/10.1109/pimrc.2007.4394225","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2007 IEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications","raw_type":"proceedings-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/W1577816227","https://openalex.org/W1588650725","https://openalex.org/W1799520439","https://openalex.org/W2017107427","https://openalex.org/W2056414370","https://openalex.org/W2065757462","https://openalex.org/W2091182943","https://openalex.org/W2096927504","https://openalex.org/W2097509779","https://openalex.org/W2100450972","https://openalex.org/W2103699908","https://openalex.org/W2108943734","https://openalex.org/W2115762396","https://openalex.org/W2117925041","https://openalex.org/W2490749045","https://openalex.org/W2798333393","https://openalex.org/W4205156876","https://openalex.org/W4248676392"],"related_works":["https://openalex.org/W1968270095","https://openalex.org/W4296478327","https://openalex.org/W2042397106","https://openalex.org/W4361730764","https://openalex.org/W1965029248","https://openalex.org/W1960072520","https://openalex.org/W2220129715","https://openalex.org/W2387596242","https://openalex.org/W2333625343","https://openalex.org/W2541651465"],"abstract_inverted_index":{"In":[0],"this":[1],"paper,":[2],"we":[3],"address":[4],"the":[5,66,68,75,83,115],"topic":[6],"of":[7,77,106,111],"pilot":[8,55],"aided":[9],"multi-user":[10,61],"channel":[11,62,89],"estimation":[12,43,63],"for":[13,45,94],"a":[14,23,33,88],"proposed":[15],"4G":[16],"wireless":[17],"system":[18],"that":[19,49,74,104,110],"uses":[20],"OFDM":[21,84],"in":[22,65],"synchronous":[24],"SDMA":[25],"environment,":[26],"which":[27],"can":[28],"also":[29],"be":[30],"regarded":[31],"as":[32],"Multiple-Input":[34],"Multiple-Output":[35],"(MIMO)":[36],"environment.":[37],"An":[38],"Iterative":[39],"Low":[40],"Complexity":[41],"(ILC)":[42],"technique":[44],"Time-Invariant":[46],"(TI)":[47],"channels":[48],"utilizes":[50],"extrapolation":[51],"and":[52],"specially":[53],"designed":[54],"sequences":[56],"is":[57,80,92,118],"presented.":[58],"Unlike":[59],"most":[60],"methods":[64,108],"literature,":[67],"ILC":[69],"method":[70,91],"does":[71],"not":[72],"assume":[73],"number":[76],"utilized":[78],"subcarriers":[79],"equal":[81,109],"to":[82],"FFT":[85],"size.":[86],"Then,":[87],"interpolation":[90],"described":[93],"Time-Varying":[95],"(TV)":[96],"channels:":[97],"Windowed":[98],"DFT":[99],"Interpolation.":[100],"Simulation":[101],"results":[102],"show":[103],"performance":[105],"our":[107],"current":[112],"technologies,":[113],"but":[114],"computational":[116],"complexity":[117],"significantly":[119],"reduced.":[120]},"counts_by_year":[{"year":2023,"cited_by_count":1},{"year":2015,"cited_by_count":1}],"updated_date":"2026-07-29T14:22:42.915294","created_date":"2025-10-10T00:00:00"}