{"id":"https://openalex.org/W2158485755","doi":"https://doi.org/10.1109/icassp.2012.6288603","title":"Robust downlink beamforming in multi-group multicasting using trace bounds on the covariance mismatches","display_name":"Robust downlink beamforming in multi-group multicasting using trace bounds on the covariance mismatches","publication_year":2012,"publication_date":"2012-03-01","ids":{"openalex":"https://openalex.org/W2158485755","doi":"https://doi.org/10.1109/icassp.2012.6288603","mag":"2158485755"},"language":"en","primary_location":{"id":"doi:10.1109/icassp.2012.6288603","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icassp.2012.6288603","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2012 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)","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/A5014149508","display_name":"Ka Lung Law","orcid":"https://orcid.org/0000-0003-0377-3810"},"institutions":[{"id":"https://openalex.org/I31512782","display_name":"Technische Universit\u00e4t Darmstadt","ror":"https://ror.org/05n911h24","country_code":"DE","type":"education","lineage":["https://openalex.org/I31512782"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Ka L. Law","raw_affiliation_strings":["Technische Universit\u00e4t Darmstadt, Darmstadt, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Technische Universit\u00e4t Darmstadt, Darmstadt, Germany","institution_ids":["https://openalex.org/I31512782"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5064132797","display_name":"Imran Wajid","orcid":null},"institutions":[{"id":"https://openalex.org/I31512782","display_name":"Technische Universit\u00e4t Darmstadt","ror":"https://ror.org/05n911h24","country_code":"DE","type":"education","lineage":["https://openalex.org/I31512782"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Imran Wajid","raw_affiliation_strings":["Technische Universit\u00e4t Darmstadt, Darmstadt, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Technische Universit\u00e4t Darmstadt, Darmstadt, Germany","institution_ids":["https://openalex.org/I31512782"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5001481378","display_name":"Marius Pesavento","orcid":"https://orcid.org/0000-0003-3395-2588"},"institutions":[{"id":"https://openalex.org/I31512782","display_name":"Technische Universit\u00e4t Darmstadt","ror":"https://ror.org/05n911h24","country_code":"DE","type":"education","lineage":["https://openalex.org/I31512782"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Marius Pesavento","raw_affiliation_strings":["Technische Universit\u00e4t Darmstadt, Darmstadt, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Technische Universit\u00e4t Darmstadt, Darmstadt, Germany","institution_ids":["https://openalex.org/I31512782"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I31512782"],"apc_list":null,"apc_paid":null,"fwci":3.7108,"has_fulltext":false,"cited_by_count":23,"citation_normalized_percentile":{"value":0.94498048,"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":"3229","last_page":"3232"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10148","display_name":"Advanced MIMO Systems Optimization","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/T10148","display_name":"Advanced MIMO Systems Optimization","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/T10796","display_name":"Cooperative Communication and Network Coding","score":0.9994999766349792,"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/T10575","display_name":"Wireless Communication Networks Research","score":0.9976000189781189,"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/beamforming","display_name":"Beamforming","score":0.6961491703987122},{"id":"https://openalex.org/keywords/second-order-cone-programming","display_name":"Second-order cone programming","score":0.6881502270698547},{"id":"https://openalex.org/keywords/semidefinite-programming","display_name":"Semidefinite programming","score":0.6547183990478516},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.6483895778656006},{"id":"https://openalex.org/keywords/robustness","display_name":"Robustness (evolution)","score":0.5849888324737549},{"id":"https://openalex.org/keywords/interior-point-method","display_name":"Interior point method","score":0.5553233623504639},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5059739947319031},{"id":"https://openalex.org/keywords/relaxation","display_name":"Relaxation (psychology)","score":0.4372754693031311},{"id":"https://openalex.org/keywords/telecommunications-link","display_name":"Telecommunications link","score":0.4204225242137909},{"id":"https://openalex.org/keywords/convex-optimization","display_name":"Convex optimization","score":0.41178613901138306},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.3707727789878845},{"id":"https://openalex.org/keywords/regular-polygon","display_name":"Regular polygon","score":0.2694081962108612}],"concepts":[{"id":"https://openalex.org/C54197355","wikidata":"https://www.wikidata.org/wiki/Q5782992","display_name":"Beamforming","level":2,"score":0.6961491703987122},{"id":"https://openalex.org/C111397411","wikidata":"https://www.wikidata.org/wiki/Q7442977","display_name":"Second-order cone programming","level":4,"score":0.6881502270698547},{"id":"https://openalex.org/C101901036","wikidata":"https://www.wikidata.org/wiki/Q2269096","display_name":"Semidefinite programming","level":2,"score":0.6547183990478516},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.6483895778656006},{"id":"https://openalex.org/C63479239","wikidata":"https://www.wikidata.org/wiki/Q7353546","display_name":"Robustness (evolution)","level":3,"score":0.5849888324737549},{"id":"https://openalex.org/C155253501","wikidata":"https://www.wikidata.org/wiki/Q461992","display_name":"Interior point method","level":2,"score":0.5553233623504639},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5059739947319031},{"id":"https://openalex.org/C2776029896","wikidata":"https://www.wikidata.org/wiki/Q3935810","display_name":"Relaxation (psychology)","level":2,"score":0.4372754693031311},{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.4204225242137909},{"id":"https://openalex.org/C157972887","wikidata":"https://www.wikidata.org/wiki/Q463359","display_name":"Convex optimization","level":3,"score":0.41178613901138306},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.3707727789878845},{"id":"https://openalex.org/C112680207","wikidata":"https://www.wikidata.org/wiki/Q714886","display_name":"Regular polygon","level":2,"score":0.2694081962108612},{"id":"https://openalex.org/C77805123","wikidata":"https://www.wikidata.org/wiki/Q161272","display_name":"Social psychology","level":1,"score":0.0},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.0},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.0},{"id":"https://openalex.org/C104317684","wikidata":"https://www.wikidata.org/wiki/Q7187","display_name":"Gene","level":2,"score":0.0},{"id":"https://openalex.org/C55493867","wikidata":"https://www.wikidata.org/wiki/Q7094","display_name":"Biochemistry","level":1,"score":0.0},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.0},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0},{"id":"https://openalex.org/C15744967","wikidata":"https://www.wikidata.org/wiki/Q9418","display_name":"Psychology","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/icassp.2012.6288603","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icassp.2012.6288603","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2012 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":12,"referenced_works":["https://openalex.org/W1545861347","https://openalex.org/W1981044874","https://openalex.org/W1996215314","https://openalex.org/W2110851871","https://openalex.org/W2129477191","https://openalex.org/W2130134073","https://openalex.org/W2140332797","https://openalex.org/W2161297670","https://openalex.org/W2169363112","https://openalex.org/W2296319761","https://openalex.org/W4250589301","https://openalex.org/W7014245034"],"related_works":["https://openalex.org/W2036562274","https://openalex.org/W2269291726","https://openalex.org/W2121045497","https://openalex.org/W2128202699","https://openalex.org/W4232508221","https://openalex.org/W2239063252","https://openalex.org/W2059909660","https://openalex.org/W4317440180","https://openalex.org/W2617248812","https://openalex.org/W2160052563"],"abstract_inverted_index":{"We":[0],"consider":[1],"the":[2,42,49,52,68,76,82,99,142,147,156],"problem":[3,60,106,130,138],"of":[4,29,40,51,62,98,166],"worst-case":[5,83,100],"robust":[6,149],"beamforming":[7,20,101],"for":[8,25],"multi-group":[9],"multicasting":[10],"network":[11],"with":[12],"erroneous":[13],"channel":[14,43],"state":[15],"information":[16],"(CSI).":[17],"In":[18,33],"previous":[19,69,148],"techniques":[21],"robustness":[22],"is":[23,73,91,131],"ensured":[24],"all":[26],"mismatch":[27,53],"matrices":[28],"bounded":[30],"Frobenius":[31],"norm.":[32],"contrast,":[34],"we":[35,46],"present":[36],"an":[37],"alternative":[38],"method":[39,158],"bounding":[41],"uncertainties,":[44],"where":[45],"only":[47],"limit":[48],"trace":[50],"matrices.":[54],"This":[55],"approach":[56],"leads":[57],"to":[58,67,74,81,93,141],"a":[59,95,112,132,160],"formulation":[61],"reduced":[63],"complexity":[64],"as":[65,139],"compared":[66],"methods.":[70,127],"Our":[71],"goal":[72],"minimize":[75],"total":[77],"transmitted":[78,167],"power":[79],"subject":[80],"user":[84],"quality-of":[85],"service":[86],"(QoS)":[87],"constraints.":[88],"Lagrange":[89],"duality":[90],"used":[92],"obtain":[94],"simple":[96],"reformulation":[97],"problem.":[102],"The":[103,128],"resulting":[104,129],"non-convex":[105],"can":[107,120],"then":[108],"be":[109,121],"converted":[110],"into":[111],"convex":[113],"form":[114],"using":[115,124],"semidefinite":[116],"relaxation":[117],"(SDR)":[118],"that":[119,155],"solved":[122],"efficiently":[123],"interior":[125],"point":[126],"linear":[133],"second-order":[134],"cone":[135],"programming":[136],"(SOCP)":[137],"opposed":[140],"quadratic":[143],"SOCP":[144],"problems":[145],"in":[146,164],"approaches.":[150],"Simulation":[151],"results":[152],"also":[153],"show":[154],"proposed":[157],"offers":[159],"significantly":[161],"improved":[162],"performance":[163],"terms":[165],"power.":[168]},"counts_by_year":[{"year":2024,"cited_by_count":2},{"year":2022,"cited_by_count":1},{"year":2021,"cited_by_count":2},{"year":2019,"cited_by_count":1},{"year":2018,"cited_by_count":2},{"year":2017,"cited_by_count":4},{"year":2016,"cited_by_count":2},{"year":2015,"cited_by_count":4},{"year":2014,"cited_by_count":1},{"year":2013,"cited_by_count":4}],"updated_date":"2026-07-29T14:22:42.915294","created_date":"2025-10-10T00:00:00"}
