{"id":"https://openalex.org/W7164857118","doi":"https://doi.org/10.1109/lsp.2026.3703642","title":"Revisiting Steering Limitations of LCMV Beamforming for Circular Microphone Arrays and a Mainlobe-Controlled Solution","display_name":"Revisiting Steering Limitations of LCMV Beamforming for Circular Microphone Arrays and a Mainlobe-Controlled Solution","publication_year":2026,"publication_date":"2026-01-01","ids":{"openalex":"https://openalex.org/W7164857118","doi":"https://doi.org/10.1109/lsp.2026.3703642"},"language":null,"primary_location":{"id":"doi:10.1109/lsp.2026.3703642","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lsp.2026.3703642","pdf_url":null,"source":{"id":"https://openalex.org/S120629676","display_name":"IEEE Signal Processing Letters","issn_l":"1070-9908","issn":["1070-9908","1558-2361"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["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 Signal Processing 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/A5138647847","display_name":"Wei Liu","orcid":null},"institutions":[{"id":"https://openalex.org/I37461747","display_name":"Wuhan University","ror":"https://ror.org/033vjfk17","country_code":"CN","type":"education","lineage":["https://openalex.org/I37461747"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Wei Liu","raw_affiliation_strings":["School of Electronic Information, Wuhan University, Wuhan, China"],"raw_orcid":"https://orcid.org/0000-0002-3534-1118","affiliations":[{"raw_affiliation_string":"School of Electronic Information, Wuhan University, Wuhan, China","institution_ids":["https://openalex.org/I37461747"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5138651669","display_name":"Gongping Huang","orcid":null},"institutions":[{"id":"https://openalex.org/I37461747","display_name":"Wuhan University","ror":"https://ror.org/033vjfk17","country_code":"CN","type":"education","lineage":["https://openalex.org/I37461747"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Gongping Huang","raw_affiliation_strings":["School of Electronic Information, Wuhan University, Wuhan, China"],"raw_orcid":"https://orcid.org/0000-0002-6825-7473","affiliations":[{"raw_affiliation_string":"School of Electronic Information, Wuhan University, Wuhan, China","institution_ids":["https://openalex.org/I37461747"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5090329304","display_name":"Jilu Jin","orcid":"https://orcid.org/0000-0003-2967-8379"},"institutions":[{"id":"https://openalex.org/I17145004","display_name":"Northwestern Polytechnical University","ror":"https://ror.org/01y0j0j86","country_code":"CN","type":"education","lineage":["https://openalex.org/I17145004"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Jilu Jin","raw_affiliation_strings":["Northwestern Polytechnical University, Xi'an, Shaanxi, China"],"raw_orcid":"https://orcid.org/0000-0003-2967-8379","affiliations":[{"raw_affiliation_string":"Northwestern Polytechnical University, Xi'an, Shaanxi, China","institution_ids":["https://openalex.org/I17145004"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5021611176","display_name":"Xueqin Luo","orcid":"https://orcid.org/0000-0003-0223-3935"},"institutions":[{"id":"https://openalex.org/I17145004","display_name":"Northwestern Polytechnical University","ror":"https://ror.org/01y0j0j86","country_code":"CN","type":"education","lineage":["https://openalex.org/I17145004"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Xueqin Luo","raw_affiliation_strings":["Northwestern Polytechnical University, Xi'an, Shaanxi, China"],"raw_orcid":"https://orcid.org/0000-0003-0223-3935","affiliations":[{"raw_affiliation_string":"Northwestern Polytechnical University, Xi'an, Shaanxi, China","institution_ids":["https://openalex.org/I17145004"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5138670429","display_name":"Shoji Makino","orcid":null},"institutions":[{"id":"https://openalex.org/I150744194","display_name":"Waseda University","ror":"https://ror.org/00ntfnx83","country_code":"JP","type":"education","lineage":["https://openalex.org/I150744194"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Shoji Makino","raw_affiliation_strings":["Waseda University, Kitakyushu City, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Waseda University, Kitakyushu City, Japan","institution_ids":["https://openalex.org/I150744194"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.7717564,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"33","issue":null,"first_page":"2750","last_page":"2754"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10860","display_name":"Speech and Audio Processing","score":0.63919997215271,"subfield":{"id":"https://openalex.org/subfields/1711","display_name":"Signal Processing"},"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/T10860","display_name":"Speech and Audio Processing","score":0.63919997215271,"subfield":{"id":"https://openalex.org/subfields/1711","display_name":"Signal Processing"},"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":0.04500000178813934,"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/T10936","display_name":"Millimeter-Wave Propagation and Modeling","score":0.035599999129772186,"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/beamforming","display_name":"Beamforming","score":0.6966000199317932},{"id":"https://openalex.org/keywords/microphone","display_name":"Microphone","score":0.5656999945640564},{"id":"https://openalex.org/keywords/noise-canceling-microphone","display_name":"Noise-canceling microphone","score":0.4187000095844269},{"id":"https://openalex.org/keywords/signal-processing","display_name":"Signal processing","score":0.375},{"id":"https://openalex.org/keywords/interference","display_name":"Interference (communication)","score":0.3659999966621399},{"id":"https://openalex.org/keywords/microphone-array","display_name":"Microphone array","score":0.35679998993873596},{"id":"https://openalex.org/keywords/signal-to-noise-ratio","display_name":"Signal-to-noise ratio (imaging)","score":0.3264000117778778}],"concepts":[{"id":"https://openalex.org/C54197355","wikidata":"https://www.wikidata.org/wiki/Q5782992","display_name":"Beamforming","level":2,"score":0.6966000199317932},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6017000079154968},{"id":"https://openalex.org/C2778263558","wikidata":"https://www.wikidata.org/wiki/Q46384","display_name":"Microphone","level":3,"score":0.5656999945640564},{"id":"https://openalex.org/C24890656","wikidata":"https://www.wikidata.org/wiki/Q82811","display_name":"Acoustics","level":1,"score":0.486299991607666},{"id":"https://openalex.org/C36922181","wikidata":"https://www.wikidata.org/wiki/Q7047650","display_name":"Noise-canceling microphone","level":5,"score":0.4187000095844269},{"id":"https://openalex.org/C104267543","wikidata":"https://www.wikidata.org/wiki/Q208163","display_name":"Signal processing","level":3,"score":0.375},{"id":"https://openalex.org/C32022120","wikidata":"https://www.wikidata.org/wiki/Q797225","display_name":"Interference (communication)","level":3,"score":0.3659999966621399},{"id":"https://openalex.org/C2778806681","wikidata":"https://www.wikidata.org/wiki/Q907293","display_name":"Microphone array","level":4,"score":0.35679998993873596},{"id":"https://openalex.org/C13944312","wikidata":"https://www.wikidata.org/wiki/Q7512748","display_name":"Signal-to-noise ratio (imaging)","level":2,"score":0.3264000117778778},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.3188999891281128},{"id":"https://openalex.org/C28490314","wikidata":"https://www.wikidata.org/wiki/Q189436","display_name":"Speech recognition","level":1,"score":0.3172000050544739},{"id":"https://openalex.org/C99498987","wikidata":"https://www.wikidata.org/wiki/Q2210247","display_name":"Noise (video)","level":3,"score":0.31470000743865967},{"id":"https://openalex.org/C143148639","wikidata":"https://www.wikidata.org/wiki/Q4876192","display_name":"Beam steering","level":3,"score":0.30469998717308044},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.29350000619888306},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.29089999198913574},{"id":"https://openalex.org/C32283439","wikidata":"https://www.wikidata.org/wiki/Q1407014","display_name":"Radar tracker","level":3,"score":0.28290000557899475},{"id":"https://openalex.org/C132094186","wikidata":"https://www.wikidata.org/wiki/Q641585","display_name":"Clutter","level":3,"score":0.2782000005245209},{"id":"https://openalex.org/C29265498","wikidata":"https://www.wikidata.org/wiki/Q7047719","display_name":"Noise measurement","level":3,"score":0.2766999900341034},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.2712000012397766},{"id":"https://openalex.org/C2987759513","wikidata":"https://www.wikidata.org/wiki/Q47528","display_name":"Radar signal processing","level":4,"score":0.2669999897480011},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.26030001044273376},{"id":"https://openalex.org/C159737794","wikidata":"https://www.wikidata.org/wiki/Q124274","display_name":"Azimuth","level":2,"score":0.2551000118255615}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/lsp.2026.3703642","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lsp.2026.3703642","pdf_url":null,"source":{"id":"https://openalex.org/S120629676","display_name":"IEEE Signal Processing Letters","issn_l":"1070-9908","issn":["1070-9908","1558-2361"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["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 Signal Processing Letters","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Affordable and clean energy","id":"https://metadata.un.org/sdg/7","score":0.8264136910438538}],"awards":[{"id":"https://openalex.org/G1383397643","display_name":null,"funder_award_id":"62471340","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G8344621629","display_name":null,"funder_award_id":"202506270089","funder_id":"https://openalex.org/F4320322725","funder_display_name":"China Scholarship Council"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"},{"id":"https://openalex.org/F4320322725","display_name":"China Scholarship Council","ror":"https://ror.org/04atp4p48"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":35,"referenced_works":["https://openalex.org/W167456299","https://openalex.org/W653761051","https://openalex.org/W1969299255","https://openalex.org/W2024059910","https://openalex.org/W2024583949","https://openalex.org/W2075061920","https://openalex.org/W2093225945","https://openalex.org/W2099984896","https://openalex.org/W2117678320","https://openalex.org/W2125298573","https://openalex.org/W2127851351","https://openalex.org/W2129934596","https://openalex.org/W2141998673","https://openalex.org/W2144244295","https://openalex.org/W2157871825","https://openalex.org/W2166117654","https://openalex.org/W2283145987","https://openalex.org/W2499102192","https://openalex.org/W2535480575","https://openalex.org/W2559629700","https://openalex.org/W2587603783","https://openalex.org/W2767170918","https://openalex.org/W2767831780","https://openalex.org/W2900123591","https://openalex.org/W2905247237","https://openalex.org/W3214500491","https://openalex.org/W4239006079","https://openalex.org/W4249052411","https://openalex.org/W4384831944","https://openalex.org/W4385693006","https://openalex.org/W4392902659","https://openalex.org/W4408345619","https://openalex.org/W4409310651","https://openalex.org/W4412129218","https://openalex.org/W4414348476"],"related_works":[],"abstract_inverted_index":{"This":[0],"paper":[1],"investigates":[2],"the":[3,36,39,57,63,85],"performance":[4,95],"limitations":[5],"of":[6,35,67],"conventional":[7,98],"linearly":[8],"constrained":[9],"minimum":[10],"variance":[11],"(LCMV)":[12],"beamformers":[13],"implemented":[14],"with":[15,97],"circular":[16],"microphone":[17],"arrays.":[18],"In":[19],"particular,":[20],"we":[21,74],"show":[22],"that":[23,84],"imposing":[24],"null":[25],"constraints":[26],"on":[27],"interference":[28],"directions":[29],"can":[30],"lead":[31],"to":[32,48,61],"a":[33,53,76],"deviation":[34,58],"mainlobe":[37],"from":[38],"desired":[40],"steering":[41],"angle.":[42],"A":[43],"theoretical":[44],"analysis":[45],"is":[46,59],"presented":[47],"characterize":[49],"this":[50,72],"deviation,":[51],"and":[52,92],"closed-form":[54],"expression":[55],"for":[56],"derived":[60],"reveal":[62],"underlying":[64],"low-frequency":[65],"behavior":[66],"LCMV":[68,78,99],"beamformers.":[69,100],"To":[70],"address":[71],"issue,":[73],"propose":[75],"mainlobe-controlled":[77],"(MC-LCMV)":[79],"beamformer.":[80],"Simulation":[81],"results":[82],"demonstrate":[83],"proposed":[86],"method":[87],"substantially":[88],"improves":[89],"spatial":[90],"directivity":[91],"speech":[93],"enhancement":[94],"compared":[96]},"counts_by_year":[],"updated_date":"2026-07-18T05:51:51.687321","created_date":"2026-06-16T00:00:00"}