{"id":"https://openalex.org/W2062196452","doi":"https://doi.org/10.1109/lcomm.2015.2423670","title":"An Efficient Pilot Scheme in Large-Scale Two-Way Relay Systems","display_name":"An Efficient Pilot Scheme in Large-Scale Two-Way Relay Systems","publication_year":2015,"publication_date":"2015-04-17","ids":{"openalex":"https://openalex.org/W2062196452","doi":"https://doi.org/10.1109/lcomm.2015.2423670","mag":"2062196452"},"language":"en","primary_location":{"id":"doi:10.1109/lcomm.2015.2423670","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lcomm.2015.2423670","pdf_url":null,"source":{"id":"https://openalex.org/S147316732","display_name":"IEEE Communications Letters","issn_l":"1089-7798","issn":["1089-7798","1558-2558","2373-7891"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310316002","host_organization_name":"IEEE Communications Society","host_organization_lineage":["https://openalex.org/P4310316002","https://openalex.org/P4310319808"],"host_organization_lineage_names":["IEEE Communications Society","Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Communications Letters","raw_type":"journal-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/A5100866440","display_name":"Xiaojun Zheng","orcid":null},"institutions":[{"id":"https://openalex.org/I116953780","display_name":"Tongji University","ror":"https://ror.org/03rc6as71","country_code":"CN","type":"education","lineage":["https://openalex.org/I116953780"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Xiaojun Zheng","raw_affiliation_strings":["School of Electronics and Information, Tongji University, Shanghai, China","Sch. of Electron. & Inf., Shanghai Tongji Univ., Shanghai, China"],"affiliations":[{"raw_affiliation_string":"School of Electronics and Information, Tongji University, Shanghai, China","institution_ids":["https://openalex.org/I116953780"]},{"raw_affiliation_string":"Sch. of Electron. & Inf., Shanghai Tongji Univ., Shanghai, China","institution_ids":["https://openalex.org/I116953780"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5034541026","display_name":"Erwu Liu","orcid":"https://orcid.org/0000-0002-2706-6208"},"institutions":[{"id":"https://openalex.org/I116953780","display_name":"Tongji University","ror":"https://ror.org/03rc6as71","country_code":"CN","type":"education","lineage":["https://openalex.org/I116953780"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Erwu Liu","raw_affiliation_strings":["School of Electronics and Information, Tongji University, Shanghai, China","Sch. of Electron. & Inf., Shanghai Tongji Univ., Shanghai, China"],"affiliations":[{"raw_affiliation_string":"School of Electronics and Information, Tongji University, Shanghai, China","institution_ids":["https://openalex.org/I116953780"]},{"raw_affiliation_string":"Sch. of Electron. & Inf., Shanghai Tongji Univ., Shanghai, China","institution_ids":["https://openalex.org/I116953780"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5031249767","display_name":"Zhengqing Zhang","orcid":"https://orcid.org/0000-0003-2403-1461"},"institutions":[{"id":"https://openalex.org/I116953780","display_name":"Tongji University","ror":"https://ror.org/03rc6as71","country_code":"CN","type":"education","lineage":["https://openalex.org/I116953780"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Zhengqing Zhang","raw_affiliation_strings":["School of Electronics and Information, Tongji University, Shanghai, China","Sch. of Electron. & Inf., Shanghai Tongji Univ., Shanghai, China"],"affiliations":[{"raw_affiliation_string":"School of Electronics and Information, Tongji University, Shanghai, China","institution_ids":["https://openalex.org/I116953780"]},{"raw_affiliation_string":"Sch. of Electron. & Inf., Shanghai Tongji Univ., Shanghai, China","institution_ids":["https://openalex.org/I116953780"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101496163","display_name":"Xinyu Qu","orcid":"https://orcid.org/0000-0001-5927-7838"},"institutions":[{"id":"https://openalex.org/I116953780","display_name":"Tongji University","ror":"https://ror.org/03rc6as71","country_code":"CN","type":"education","lineage":["https://openalex.org/I116953780"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Xinyu Qu","raw_affiliation_strings":["School of Electronics and Information, Tongji University, Shanghai, China","Sch. of Electron. & Inf., Shanghai Tongji Univ., Shanghai, China"],"affiliations":[{"raw_affiliation_string":"School of Electronics and Information, Tongji University, Shanghai, China","institution_ids":["https://openalex.org/I116953780"]},{"raw_affiliation_string":"Sch. of Electron. & Inf., Shanghai Tongji Univ., Shanghai, China","institution_ids":["https://openalex.org/I116953780"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100431222","display_name":"Rui Wang","orcid":"https://orcid.org/0000-0002-2974-0972"},"institutions":[{"id":"https://openalex.org/I116953780","display_name":"Tongji University","ror":"https://ror.org/03rc6as71","country_code":"CN","type":"education","lineage":["https://openalex.org/I116953780"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Rui Wang","raw_affiliation_strings":["School of Electronics and Information, Tongji University, Shanghai, China","Sch. of Electron. & Inf., Shanghai Tongji Univ., Shanghai, China"],"affiliations":[{"raw_affiliation_string":"School of Electronics and Information, Tongji University, Shanghai, China","institution_ids":["https://openalex.org/I116953780"]},{"raw_affiliation_string":"Sch. of Electron. & Inf., Shanghai Tongji Univ., Shanghai, China","institution_ids":["https://openalex.org/I116953780"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5051230002","display_name":"Xuefeng Yin","orcid":"https://orcid.org/0000-0001-7216-8994"},"institutions":[{"id":"https://openalex.org/I116953780","display_name":"Tongji University","ror":"https://ror.org/03rc6as71","country_code":"CN","type":"education","lineage":["https://openalex.org/I116953780"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Xuefeng Yin","raw_affiliation_strings":["School of Electronics and Information, Tongji University, Shanghai, China","Sch. of Electron. & Inf., Shanghai Tongji Univ., Shanghai, China"],"affiliations":[{"raw_affiliation_string":"School of Electronics and Information, Tongji University, Shanghai, China","institution_ids":["https://openalex.org/I116953780"]},{"raw_affiliation_string":"Sch. of Electron. & Inf., Shanghai Tongji Univ., Shanghai, China","institution_ids":["https://openalex.org/I116953780"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5115589611","display_name":"Fuqiang Liu","orcid":null},"institutions":[{"id":"https://openalex.org/I116953780","display_name":"Tongji University","ror":"https://ror.org/03rc6as71","country_code":"CN","type":"education","lineage":["https://openalex.org/I116953780"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Fuqiang Liu","raw_affiliation_strings":["School of Electronics and Information, Tongji University, Shanghai, China","Sch. of Electron. & Inf., Shanghai Tongji Univ., Shanghai, China"],"affiliations":[{"raw_affiliation_string":"School of Electronics and Information, Tongji University, Shanghai, China","institution_ids":["https://openalex.org/I116953780"]},{"raw_affiliation_string":"Sch. of Electron. & Inf., Shanghai Tongji Univ., Shanghai, China","institution_ids":["https://openalex.org/I116953780"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":7,"corresponding_author_ids":["https://openalex.org/A5100866440"],"corresponding_institution_ids":["https://openalex.org/I116953780"],"apc_list":null,"apc_paid":null,"fwci":2.3298,"has_fulltext":false,"cited_by_count":8,"citation_normalized_percentile":{"value":0.89696322,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":97},"biblio":{"volume":"19","issue":"6","first_page":"1061","last_page":"1064"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10796","display_name":"Cooperative Communication and Network Coding","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"}},"topics":[{"id":"https://openalex.org/T10796","display_name":"Cooperative Communication and Network Coding","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/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/T12791","display_name":"Full-Duplex Wireless Communications","score":0.9990000128746033,"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/relay","display_name":"Relay","score":0.8258575201034546},{"id":"https://openalex.org/keywords/interference","display_name":"Interference (communication)","score":0.6745030879974365},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6679373383522034},{"id":"https://openalex.org/keywords/base-station","display_name":"Base station","score":0.6268007755279541},{"id":"https://openalex.org/keywords/antenna","display_name":"Antenna (radio)","score":0.47959673404693604},{"id":"https://openalex.org/keywords/topology","display_name":"Topology (electrical circuits)","score":0.4573606252670288},{"id":"https://openalex.org/keywords/signal-to-noise-ratio","display_name":"Signal-to-noise ratio (imaging)","score":0.44848453998565674},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.4484706223011017},{"id":"https://openalex.org/keywords/noise","display_name":"Noise (video)","score":0.4465371370315552},{"id":"https://openalex.org/keywords/reuse","display_name":"Reuse","score":0.43623360991477966},{"id":"https://openalex.org/keywords/scheme","display_name":"Scheme (mathematics)","score":0.4320039749145508},{"id":"https://openalex.org/keywords/single-antenna-interference-cancellation","display_name":"Single antenna interference cancellation","score":0.42098915576934814},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.4145171344280243},{"id":"https://openalex.org/keywords/sequence","display_name":"Sequence (biology)","score":0.41007089614868164},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.4005902111530304},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.2480044960975647},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.10061639547348022},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.09264585375785828},{"id":"https://openalex.org/keywords/power","display_name":"Power (physics)","score":0.08985212445259094},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.0703108012676239},{"id":"https://openalex.org/keywords/combinatorics","display_name":"Combinatorics","score":0.06861504912376404}],"concepts":[{"id":"https://openalex.org/C2778156585","wikidata":"https://www.wikidata.org/wiki/Q174053","display_name":"Relay","level":3,"score":0.8258575201034546},{"id":"https://openalex.org/C32022120","wikidata":"https://www.wikidata.org/wiki/Q797225","display_name":"Interference (communication)","level":3,"score":0.6745030879974365},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6679373383522034},{"id":"https://openalex.org/C68649174","wikidata":"https://www.wikidata.org/wiki/Q1379116","display_name":"Base station","level":2,"score":0.6268007755279541},{"id":"https://openalex.org/C21822782","wikidata":"https://www.wikidata.org/wiki/Q131214","display_name":"Antenna (radio)","level":2,"score":0.47959673404693604},{"id":"https://openalex.org/C184720557","wikidata":"https://www.wikidata.org/wiki/Q7825049","display_name":"Topology (electrical circuits)","level":2,"score":0.4573606252670288},{"id":"https://openalex.org/C13944312","wikidata":"https://www.wikidata.org/wiki/Q7512748","display_name":"Signal-to-noise ratio (imaging)","level":2,"score":0.44848453998565674},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.4484706223011017},{"id":"https://openalex.org/C99498987","wikidata":"https://www.wikidata.org/wiki/Q2210247","display_name":"Noise (video)","level":3,"score":0.4465371370315552},{"id":"https://openalex.org/C206588197","wikidata":"https://www.wikidata.org/wiki/Q846574","display_name":"Reuse","level":2,"score":0.43623360991477966},{"id":"https://openalex.org/C77618280","wikidata":"https://www.wikidata.org/wiki/Q1155772","display_name":"Scheme (mathematics)","level":2,"score":0.4320039749145508},{"id":"https://openalex.org/C83204339","wikidata":"https://www.wikidata.org/wiki/Q7523915","display_name":"Single antenna interference cancellation","level":3,"score":0.42098915576934814},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.4145171344280243},{"id":"https://openalex.org/C2778112365","wikidata":"https://www.wikidata.org/wiki/Q3511065","display_name":"Sequence (biology)","level":2,"score":0.41007089614868164},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.4005902111530304},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.2480044960975647},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.10061639547348022},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.09264585375785828},{"id":"https://openalex.org/C163258240","wikidata":"https://www.wikidata.org/wiki/Q25342","display_name":"Power (physics)","level":2,"score":0.08985212445259094},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.0703108012676239},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.06861504912376404},{"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/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C54355233","wikidata":"https://www.wikidata.org/wiki/Q7162","display_name":"Genetics","level":1,"score":0.0},{"id":"https://openalex.org/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","level":2,"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/C548081761","wikidata":"https://www.wikidata.org/wiki/Q180388","display_name":"Waste management","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/lcomm.2015.2423670","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lcomm.2015.2423670","pdf_url":null,"source":{"id":"https://openalex.org/S147316732","display_name":"IEEE Communications Letters","issn_l":"1089-7798","issn":["1089-7798","1558-2558","2373-7891"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310316002","host_organization_name":"IEEE Communications Society","host_organization_lineage":["https://openalex.org/P4310316002","https://openalex.org/P4310319808"],"host_organization_lineage_names":["IEEE Communications Society","Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Communications Letters","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Affordable and clean energy","score":0.4099999964237213,"id":"https://metadata.un.org/sdg/7"}],"awards":[{"id":"https://openalex.org/G1588446266","display_name":null,"funder_award_id":"13510711000","funder_id":"https://openalex.org/F4320321885","funder_display_name":"Science and Technology Commission of Shanghai Municipality"},{"id":"https://openalex.org/G5269578426","display_name":null,"funder_award_id":"61401313","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G7185348538","display_name":null,"funder_award_id":"61331009","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"},{"id":"https://openalex.org/F4320321885","display_name":"Science and Technology Commission of Shanghai Municipality","ror":"https://ror.org/03kt66j61"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":13,"referenced_works":["https://openalex.org/W1917415483","https://openalex.org/W1974956497","https://openalex.org/W1989280914","https://openalex.org/W1990955244","https://openalex.org/W2000784360","https://openalex.org/W2059245681","https://openalex.org/W2107022748","https://openalex.org/W2121315337","https://openalex.org/W2128513990","https://openalex.org/W2141682101","https://openalex.org/W2147601077","https://openalex.org/W2170214291","https://openalex.org/W3106282754"],"related_works":["https://openalex.org/W2539674285","https://openalex.org/W1998322187","https://openalex.org/W1038122923","https://openalex.org/W2952514781","https://openalex.org/W3019210376","https://openalex.org/W2391145594","https://openalex.org/W2326572623","https://openalex.org/W2972242150","https://openalex.org/W2375194141","https://openalex.org/W2140239043"],"abstract_inverted_index":{"This":[0],"letter":[1],"considers":[2],"an":[3],"efficient":[4],"pilot":[5,38,46,56],"scheme":[6],"for":[7],"two-way":[8],"relay":[9,16],"system":[10],"with":[11,121],"massive":[12],"antennas":[13],"in":[14,30,60],"the":[15,31,37,65,69,79,86,90,103,111,114,118,122],"base":[17],"station":[18],"(BS).":[19],"For":[20],"such":[21,76],"a":[22,77],"system,":[23],"we":[24],"prove":[25],"that":[26],"user":[27],"terminals":[28],"(UTs)":[29],"same":[32],"communication":[33],"pair":[34],"can":[35,96,106],"reuse":[36],"sequence":[39],"without":[40],"performance":[41,67],"loss.":[42],"Hence,":[43],"only":[44],"K":[45],"symbols":[47,57],"are":[48,58],"required":[49],"to":[50],"support":[51],"2K":[52,55],"UTs":[53],"while":[54],"needed":[59],"conventional":[61],"cases.":[62],"We":[63],"analyze":[64],"asymptotic":[66],"when":[68],"BS's":[70,123],"antenna":[71,124],"number":[72],"grows":[73],"infinite.":[74],"In":[75,100],"case,":[78],"inter-pair":[80],"interference":[81],"and":[82,85,117],"noise":[83],"vanish,":[84],"self-interference":[87,112],"determined":[88],"by":[89,109],"second-order":[91],"statistics":[92],"of":[93],"channel":[94],"vectors":[95],"be":[97,107],"feasibly":[98],"tackled.":[99],"this":[101],"way,":[102],"desired":[104],"signal":[105],"obtained":[108],"subtracting":[110],"from":[113],"received":[115],"signal,":[116],"capacity":[119],"increases":[120],"number.":[125]},"counts_by_year":[{"year":2020,"cited_by_count":1},{"year":2018,"cited_by_count":1},{"year":2017,"cited_by_count":2},{"year":2016,"cited_by_count":3},{"year":2015,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
