{"id":"https://openalex.org/W2051349938","doi":"https://doi.org/10.1109/glocom.2011.6134210","title":"Prior Zero-Forcing for Relaying Primary Signals in Cognitive Network","display_name":"Prior Zero-Forcing for Relaying Primary Signals in Cognitive Network","publication_year":2011,"publication_date":"2011-12-01","ids":{"openalex":"https://openalex.org/W2051349938","doi":"https://doi.org/10.1109/glocom.2011.6134210","mag":"2051349938"},"language":"en","primary_location":{"id":"doi:10.1109/glocom.2011.6134210","is_oa":false,"landing_page_url":"https://doi.org/10.1109/glocom.2011.6134210","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2011 IEEE Global Telecommunications Conference - GLOBECOM 2011","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/A5025467937","display_name":"Shenghui Song","orcid":"https://orcid.org/0000-0001-6316-8415"},"institutions":[{"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"],"is_corresponding":true,"raw_author_name":"S. H. Song","raw_affiliation_strings":["Hong Kong University of Science and Technology, Hong Kong, China"],"affiliations":[{"raw_affiliation_string":"Hong Kong University of Science and Technology, Hong Kong, China","institution_ids":["https://openalex.org/I200769079"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5079052203","display_name":"Khaled B. Letaief","orcid":"https://orcid.org/0000-0003-2519-6401"},"institutions":[{"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"],"is_corresponding":false,"raw_author_name":"K. B. Letaief","raw_affiliation_strings":["Hong Kong University of Science and Technology, Hong Kong, China"],"affiliations":[{"raw_affiliation_string":"Hong Kong University of Science and Technology, Hong Kong, China","institution_ids":["https://openalex.org/I200769079"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5025467937"],"corresponding_institution_ids":["https://openalex.org/I200769079"],"apc_list":null,"apc_paid":null,"fwci":3.2793,"has_fulltext":false,"cited_by_count":14,"citation_normalized_percentile":{"value":0.92158936,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":98},"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"5"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10579","display_name":"Cognitive Radio Networks and Spectrum Sensing","score":1.0,"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"}},"topics":[{"id":"https://openalex.org/T10579","display_name":"Cognitive Radio Networks and Spectrum Sensing","score":1.0,"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":0.9994999766349792,"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"}},{"id":"https://openalex.org/T10796","display_name":"Cooperative Communication and Network Coding","score":0.9980999827384949,"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/interference","display_name":"Interference (communication)","score":0.6032650470733643},{"id":"https://openalex.org/keywords/cognitive-radio","display_name":"Cognitive radio","score":0.5841085314750671},{"id":"https://openalex.org/keywords/base-station","display_name":"Base station","score":0.5747339725494385},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5501722097396851},{"id":"https://openalex.org/keywords/beamforming","display_name":"Beamforming","score":0.5377384424209595},{"id":"https://openalex.org/keywords/cognitive-network","display_name":"Cognitive network","score":0.5202571153640747},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.493569016456604},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.3794534206390381},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.3114734888076782},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.15878891944885254}],"concepts":[{"id":"https://openalex.org/C32022120","wikidata":"https://www.wikidata.org/wiki/Q797225","display_name":"Interference (communication)","level":3,"score":0.6032650470733643},{"id":"https://openalex.org/C149946192","wikidata":"https://www.wikidata.org/wiki/Q3235733","display_name":"Cognitive radio","level":3,"score":0.5841085314750671},{"id":"https://openalex.org/C68649174","wikidata":"https://www.wikidata.org/wiki/Q1379116","display_name":"Base station","level":2,"score":0.5747339725494385},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5501722097396851},{"id":"https://openalex.org/C54197355","wikidata":"https://www.wikidata.org/wiki/Q5782992","display_name":"Beamforming","level":2,"score":0.5377384424209595},{"id":"https://openalex.org/C32542511","wikidata":"https://www.wikidata.org/wiki/Q5141225","display_name":"Cognitive network","level":4,"score":0.5202571153640747},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.493569016456604},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.3794534206390381},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.3114734888076782},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.15878891944885254}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/glocom.2011.6134210","is_oa":false,"landing_page_url":"https://doi.org/10.1109/glocom.2011.6134210","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2011 IEEE Global Telecommunications Conference - GLOBECOM 2011","raw_type":"proceedings-article"},{"id":"pmh:oai:repository.hkust.edu.hk:1783.1-78147","is_oa":false,"landing_page_url":"http://repository.hkust.edu.hk/ir/Record/1783.1-78147","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":[{"id":"https://metadata.un.org/sdg/16","score":0.49000000953674316,"display_name":"Peace, Justice and strong institutions"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":13,"referenced_works":["https://openalex.org/W1980266728","https://openalex.org/W2000032973","https://openalex.org/W2071707134","https://openalex.org/W2096380192","https://openalex.org/W2096720897","https://openalex.org/W2118699182","https://openalex.org/W2133018785","https://openalex.org/W2142116497","https://openalex.org/W2159179663","https://openalex.org/W2160631319","https://openalex.org/W2165673607","https://openalex.org/W2168078104","https://openalex.org/W4253900906"],"related_works":["https://openalex.org/W2059212413","https://openalex.org/W1596602858","https://openalex.org/W2277261328","https://openalex.org/W2167656028","https://openalex.org/W2610471112","https://openalex.org/W1496856639","https://openalex.org/W2340059876","https://openalex.org/W2900218722","https://openalex.org/W2800372944","https://openalex.org/W2010464513"],"abstract_inverted_index":{"Relaying":[0],"of":[1,75,151,191,205,214,217],"the":[2,12,40,65,73,93,99,110,115,126,139,147,158,195,198,203,215],"primary":[3,13,41,66,94,100,177],"signals":[4,44,101,117],"by":[5,97,146,163],"cognitive":[6,43,76,111,116,169],"base-":[7],"stations":[8],"(CBSs)":[9],"can":[10],"help":[11],"system":[14],"and":[15,42,142,153,174,207,209,222],"thus":[16,143],"win":[17],"CBSs":[18],"a":[19,36,48,84,129,133,164,167,175,188],"higher":[20,134,168],"chance":[21],"to":[22,54,64,92,102,109,121,125,157],"transmit":[23,223],"their":[24,107],"own":[25],"signals.":[26],"For":[27],"this":[28,79,210],"purpose,":[29],"conventional":[30],"zero-":[31],"forcing":[32],"(CZF)":[33],"beamforming":[34],"is":[35,62,69,144,161,182,197,212],"straightforward":[37],"solution":[38],"where":[39],"are":[45,118],"transmitted":[46,104],"from":[47],"multi-antenna":[49],"CBS":[50],"without":[51,105],"causing":[52],"interference":[53,108,124,178],"each":[55],"other.":[56],"However,":[57],"with":[58,72,155,185],"CZF,":[59,208],"no":[60],"priority":[61,91],"given":[63],"signals,":[67],"which":[68,89],"not":[70,119],"consistent":[71],"idea":[74],"radio.":[77],"In":[78],"paper,":[80],"we":[81],"shall":[82],"propose":[83],"prior":[85],"ZF":[86],"(PZF)":[87],"method":[88],"gives":[90],"users":[95,112],"(PUs)":[96],"allowing":[98],"be":[103],"considering":[106],"(CUs),":[113],"while":[114],"allowed":[120],"generate":[122],"any":[123],"PU.":[127,148],"As":[128],"result,":[130],"PZF":[131,154,206],"provides":[132],"effective":[135],"channel":[136,220],"gain":[137],"for":[138,194],"CBS-PU":[140],"link":[141],"preferred":[145],"The":[149],"comparison":[150],"CZF":[152],"respect":[156],"CU's":[159],"performance":[160],"dictated":[162],"tradeoff":[165],"between":[166],"signal":[170],"power":[171],"(with":[172,179],"PZF)":[173],"lower":[176],"CZF).":[180],"It":[181],"shown":[183],"that,":[184],"one":[186],"CU,":[187],"target":[189],"rate":[190],"1":[192],"bit/s/Hz":[193],"CU":[196],"key":[199],"point":[200,211],"that":[201],"differentiates":[202],"advantage":[204],"independent":[213],"number":[216],"CBS-":[218],"antennas,":[219],"conditions,":[221],"SNR.":[224]},"counts_by_year":[{"year":2020,"cited_by_count":1},{"year":2016,"cited_by_count":3},{"year":2015,"cited_by_count":1},{"year":2014,"cited_by_count":2},{"year":2013,"cited_by_count":5},{"year":2012,"cited_by_count":2}],"updated_date":"2026-04-04T16:13:02.066488","created_date":"2025-10-10T00:00:00"}