{"id":"https://openalex.org/W7161146530","doi":"https://doi.org/10.48550/arxiv.2605.12910","title":"Electromagnetic Signal and Information Theory: A Continuous-Aperture Array Perspective","display_name":"Electromagnetic Signal and Information Theory: A Continuous-Aperture Array Perspective","publication_year":2026,"publication_date":"2026-05-13","ids":{"openalex":"https://openalex.org/W7161146530","doi":"https://doi.org/10.48550/arxiv.2605.12910"},"language":null,"primary_location":{"id":"doi:10.48550/arxiv.2605.12910","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2605.12910","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"article"},"type":"preprint","indexed_in":["datacite"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://doi.org/10.48550/arxiv.2605.12910","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5136144588","display_name":"Zhaolin Wang","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Wang, Zhaolin","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5136176774","display_name":"Chongjun Ouyang","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Ouyang, Chongjun","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5093992800","display_name":"Kuranage Roche Rayan Ranasinghe","orcid":"https://orcid.org/0000-0002-6834-8877"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Ranasinghe, Kuranage Roche Rayan","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5060019953","display_name":"Shuai Yuan","orcid":"https://orcid.org/0000-0003-3284-3961"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Yuan, Shuai S. A.","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5042210188","display_name":"Giuseppe Thadeu Freitas de Abreu","orcid":"https://orcid.org/0000-0002-5018-8174"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"de Abreu, Giuseppe Thadeu Freitas","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5136132142","display_name":"Emil Bj\u00f6rnson","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Bj\u00f6rnson, Emil","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5136170403","display_name":"Yuanwei Liu","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Liu, Yuanwei","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":7,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10931","display_name":"Direction-of-Arrival Estimation Techniques","score":0.21739999949932098,"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/T10931","display_name":"Direction-of-Arrival Estimation Techniques","score":0.21739999949932098,"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/T11946","display_name":"Antenna Design and Optimization","score":0.1151999980211258,"subfield":{"id":"https://openalex.org/subfields/2202","display_name":"Aerospace 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/T11739","display_name":"Microwave Imaging and Scattering Analysis","score":0.09520000219345093,"subfield":{"id":"https://openalex.org/subfields/2204","display_name":"Biomedical 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":0.7028999924659729},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.6136000156402588},{"id":"https://openalex.org/keywords/perspective","display_name":"Perspective (graphical)","score":0.5605000257492065},{"id":"https://openalex.org/keywords/multipath-propagation","display_name":"Multipath propagation","score":0.5343000292778015},{"id":"https://openalex.org/keywords/key","display_name":"Key (lock)","score":0.5242999792098999},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.5218999981880188}],"concepts":[{"id":"https://openalex.org/C54197355","wikidata":"https://www.wikidata.org/wiki/Q5782992","display_name":"Beamforming","level":2,"score":0.7028999924659729},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.6136000156402588},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6026999950408936},{"id":"https://openalex.org/C12713177","wikidata":"https://www.wikidata.org/wiki/Q1900281","display_name":"Perspective (graphical)","level":2,"score":0.5605000257492065},{"id":"https://openalex.org/C161218011","wikidata":"https://www.wikidata.org/wiki/Q11827794","display_name":"Multipath propagation","level":3,"score":0.5343000292778015},{"id":"https://openalex.org/C26517878","wikidata":"https://www.wikidata.org/wiki/Q228039","display_name":"Key (lock)","level":2,"score":0.5242999792098999},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.5218999981880188},{"id":"https://openalex.org/C2779843651","wikidata":"https://www.wikidata.org/wiki/Q7390335","display_name":"SIGNAL (programming language)","level":2,"score":0.5024999976158142},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.4702000021934509},{"id":"https://openalex.org/C104267543","wikidata":"https://www.wikidata.org/wiki/Q208163","display_name":"Signal processing","level":3,"score":0.4650000035762787},{"id":"https://openalex.org/C208081375","wikidata":"https://www.wikidata.org/wiki/Q274502","display_name":"Degrees of freedom (physics and chemistry)","level":2,"score":0.4510999917984009},{"id":"https://openalex.org/C124851039","wikidata":"https://www.wikidata.org/wiki/Q2665459","display_name":"Compressed sensing","level":2,"score":0.398499995470047},{"id":"https://openalex.org/C177454536","wikidata":"https://www.wikidata.org/wiki/Q578290","display_name":"Emphasis (telecommunications)","level":2,"score":0.36649999022483826},{"id":"https://openalex.org/C28843909","wikidata":"https://www.wikidata.org/wiki/Q177625","display_name":"Electromagnetic field","level":2,"score":0.3089999854564667},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.2953999936580658},{"id":"https://openalex.org/C113775141","wikidata":"https://www.wikidata.org/wiki/Q428691","display_name":"Computer engineering","level":1,"score":0.2759000062942505},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.260699987411499},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.2542000114917755}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.48550/arxiv.2605.12910","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2605.12910","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":null,"raw_source_name":null,"raw_type":"article"}],"best_oa_location":{"id":"doi:10.48550/arxiv.2605.12910","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2605.12910","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"article"},"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/16","score":0.6798608303070068,"display_name":"Peace, Justice and strong institutions"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":[],"abstract_inverted_index":{"Emerging":[0],"wireless":[1,189],"systems":[2,83],"are":[3,28,59],"evolving":[4],"toward":[5],"larger,":[6],"denser,":[7],"higher-frequency,":[8],"and":[9,37,48,57,64,69,90,119,125,128,134,151,183],"more":[10,29],"reconfigurable":[11],"apertures,":[12],"which":[13],"motivates":[14],"the":[15,53,85,98,110,129,165,170,178],"study":[16],"of":[17,81,87,113,132,137,169],"continuous-aperture":[18,106],"arrays":[19,25],"(CAPAs).":[20],"Unlike":[21],"conventional":[22],"spatially":[23,33],"discrete":[24,101],"(SPDAs),":[26],"CAPAs":[27],"naturally":[30],"modeled":[31],"as":[32,146],"continuous":[34,67],"electromagnetic":[35,88,111],"apertures":[36],"therefore":[38],"call":[39],"for":[40],"a":[41,78],"fundamental":[42,130],"shift":[43],"in":[44],"both":[45],"signal":[46,89],"processing":[47],"information-theoretic":[49],"analysis.":[50],"In":[51],"particular,":[52],"underlying":[54],"channels,":[55],"signals,":[56],"beamformers":[58],"no":[60],"longer":[61],"finite-dimensional":[62,161],"vectors":[63],"matrices,":[65],"but":[66],"fields":[68],"operators":[70],"governed":[71],"by":[72],"Maxwell's":[73],"equations.":[74],"This":[75],"paper":[76],"provides":[77],"tutorial":[79,174],"overview":[80],"CAPA":[82,138],"from":[84,100],"perspective":[86],"information":[91],"theory":[92],"(ESIT),":[93],"with":[94],"an":[95],"emphasis":[96],"on":[97],"transition":[99],"array":[102],"models":[103],"to":[104,176],"physics-consistent":[105],"formulations.":[107],"We":[108,140],"review":[109],"foundations":[112],"CAPAs,":[114],"practical":[115],"hardware":[116],"implementations,":[117],"line-of-sight":[118],"multipath":[120],"channel":[121,126],"modeling,":[122],"continuous-space":[123],"beamforming":[124],"estimation,":[127],"degrees":[131],"freedom":[133],"capacity":[135],"limits":[136],"systems.":[139],"also":[141],"highlight":[142],"how":[143],"tools":[144],"such":[145],"wavenumber-domain":[147],"methods,":[148],"functional":[149],"analysis,":[150],"compressive":[152],"sensing":[153],"can":[154],"transform":[155],"challenging":[156],"infinite-dimensional":[157],"problems":[158],"into":[159],"tractable":[160],"ones":[162],"while":[163],"preserving":[164],"essential":[166],"physical":[167],"structure":[168],"channel.":[171],"Overall,":[172],"this":[173],"aims":[175],"clarify":[177],"key":[179],"principles,":[180],"analytical":[181],"tools,":[182],"open":[184],"challenges":[185],"that":[186],"shape":[187],"CAPA-enabled":[188],"communications.":[190]},"counts_by_year":[],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2026-05-15T00:00:00"}
