{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/117567"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/117567","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Impedance- and spatial-domain aliasing in interference management techniques","abstract":"Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-12-01","abstract_html":"Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-12-01","abstract_has_math":false,"creators":["Seo, Hyungjoo"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Electrical & Computer Engr","degree_department":null,"school":null,"contributors":["Zhou, Jin","Roy Choudhury, Romit","Hanumolu, Pavan","Gong, Songbin"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2022,"date_issued":"2022-12","date_published":"2022-12","updated_at":"2026-07-22T22:24:56Z","subjects":["Wireless","Impedance Aliasing","Angular Aliasing","Spatial Aliasing","Mixer-first","Receivers","Rfic","Radio-frequency","Super-heterodyne","N-path","N-path Mixer","N-path Filter","Interference Management","Interference Rejection","Image Rejection","Hartley","Weaver","Lptv","Cmos","Acoustic Device","Bandpass Filter","Acoustic Filter","Saw","Frequency-translation","Baw","Programmable Receiver","Software-defined Radio","Cognitive Radio","Source Separation","Blind Source Separation","Underdetermined","Array Processing","Signal Processing","Robot Audition","Robot Hearing","Binaural","Independent Component Analysis","Beamforming","Localization","Angle-of-arrival","Interference Alignment"],"languages":["en","eng"],"rights":["Copyright 2022 Hyungjoo Seo"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://hdl.handle.net/2142/117567","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Zhou, Jin","Roy Choudhury, Romit","Hanumolu, Pavan","Gong, Songbin"]},{"key":"dc:creator","label":"Author","values":["Seo, Hyungjoo"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2022-12","2022-11-23"]},{"key":"dc:type","label":"Dc Type","values":["text","Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Electrical & Computer Engr"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Wireless","Impedance Aliasing","Angular Aliasing","Spatial Aliasing","Mixer-first","Receivers","Rfic","Radio-frequency","Super-heterodyne","N-path","N-path Mixer","N-path Filter","Interference Management","Interference Rejection","Image Rejection","Hartley","Weaver","Lptv","Cmos","Acoustic Device","Bandpass Filter","Acoustic Filter","Saw","Frequency-translation","Baw","Programmable Receiver","Software-defined Radio","Cognitive Radio","Source Separation","Blind Source Separation","Underdetermined","Array Processing","Signal Processing","Robot Audition","Robot Hearing","Binaural","Independent Component Analysis","Beamforming","Localization","Angle-of-arrival","Interference Alignment"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en","eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2022 Hyungjoo Seo"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://hdl.handle.net/2142/117567"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-12-01","The student, Hyungjoo Seo, accepted the attached license on 2022-11-22 at 19:11.","The student, Hyungjoo Seo, submitted this Dissertation for approval on 2022-11-22 at 19:23.","This Dissertation was approved for publication on 2022-11-23 at 13:41.","DSpace SAF Submission Ingestion Package generated from Vireo submission #18622 on 2023-04-12 at 11:35:13","In modern communication systems, interference management is crucial in recovering desired target signals corrupted by the channel from various unknown interference and noise. In radio-frequency (RF) spectral interference problems in wireless communication, interference-tolerant RF front-end receiver design is becoming increasingly challenging, as modern wireless devices have to support many frequency bands with numerous front-end switches and costly acoustic filters. Since acoustic filters are mostly not tunable, O(K) acoustic filters are needed to cover K bands with switches to select the right filters. On top of that, the cost and size of next-generation RF front-ends are further stressed by the new trends in multi-in-multi-out (MIMO), broadband, and dynamic spectrum access which exacerbates the front-end design issues. As a solution to this problem, we propose blocker-tolerant programmable RF front-end receiver architecture, called mixer-first acoustic-filtering front end, which utilizes N-path structure to translate the frequency response of O(1) acoustic filter to cover O(K) bands over wide range of continuous frequencies with minimal loss penalty. Also, we demystify the impedance aliasing phenomenon caused by uncertainty at the interface between two distinct domains such as acoustic-electromagnetic interface. Also, aliasing property in spatial domain has been investigated to deal with spatial interference management problem. Unlike conventional approaches to prevent spatial aliasing issues in multi-sensor linear array, we propose a way to exploit the phenomenon to solve under-determined blind multi-target localization and source separation problems by aligning the interferers in spatial domain."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Impedance- and spatial-domain aliasing in interference management techniques"]}]}],"canonical_facts":{"dc:contributor":["Zhou, Jin","Roy Choudhury, Romit","Hanumolu, Pavan","Gong, Songbin"],"dc:creator":["Seo, Hyungjoo"],"dc:date":["2022-12","2022-11-23"],"dc:description":["Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-12-01","The student, Hyungjoo Seo, accepted the attached license on 2022-11-22 at 19:11.","The student, Hyungjoo Seo, submitted this Dissertation for approval on 2022-11-22 at 19:23.","This Dissertation was approved for publication on 2022-11-23 at 13:41.","DSpace SAF Submission Ingestion Package generated from Vireo submission #18622 on 2023-04-12 at 11:35:13","In modern communication systems, interference management is crucial in recovering desired target signals corrupted by the channel from various unknown interference and noise. In radio-frequency (RF) spectral interference problems in wireless communication, interference-tolerant RF front-end receiver design is becoming increasingly challenging, as modern wireless devices have to support many frequency bands with numerous front-end switches and costly acoustic filters. Since acoustic filters are mostly not tunable, O(K) acoustic filters are needed to cover K bands with switches to select the right filters. On top of that, the cost and size of next-generation RF front-ends are further stressed by the new trends in multi-in-multi-out (MIMO), broadband, and dynamic spectrum access which exacerbates the front-end design issues. As a solution to this problem, we propose blocker-tolerant programmable RF front-end receiver architecture, called mixer-first acoustic-filtering front end, which utilizes N-path structure to translate the frequency response of O(1) acoustic filter to cover O(K) bands over wide range of continuous frequencies with minimal loss penalty. Also, we demystify the impedance aliasing phenomenon caused by uncertainty at the interface between two distinct domains such as acoustic-electromagnetic interface. Also, aliasing property in spatial domain has been investigated to deal with spatial interference management problem. Unlike conventional approaches to prevent spatial aliasing issues in multi-sensor linear array, we propose a way to exploit the phenomenon to solve under-determined blind multi-target localization and source separation problems by aligning the interferers in spatial domain."],"dc:format":["application/pdf"],"dc:identifier":["https://hdl.handle.net/2142/117567"],"dc:language":["en","eng"],"dc:rights":["Copyright 2022 Hyungjoo Seo"],"dc:subject":["Wireless","Impedance Aliasing","Angular Aliasing","Spatial Aliasing","Mixer-first","Receivers","Rfic","Radio-frequency","Super-heterodyne","N-path","N-path Mixer","N-path Filter","Interference Management","Interference Rejection","Image Rejection","Hartley","Weaver","Lptv","Cmos","Acoustic Device","Bandpass Filter","Acoustic Filter","Saw","Frequency-translation","Baw","Programmable Receiver","Software-defined Radio","Cognitive Radio","Source Separation","Blind Source Separation","Underdetermined","Array Processing","Signal Processing","Robot Audition","Robot Hearing","Binaural","Independent Component Analysis","Beamforming","Localization","Angle-of-arrival","Interference Alignment"],"dc:title":["Impedance- and spatial-domain aliasing in interference management techniques"],"dc:type":["text","Thesis"],"thesis:degree_discipline":["Electrical & Computer Engr"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Ph.D."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:24:56Z"}