{"id":"https://openalex.org/W7151235130","doi":"https://doi.org/10.48550/arxiv.2604.04057","title":"CTD-Diff: Cooperative Time-Division Diffusion for Multi-User Semantic Communication Systems","display_name":"CTD-Diff: Cooperative Time-Division Diffusion for Multi-User Semantic Communication Systems","publication_year":2026,"publication_date":"2026-04-05","ids":{"openalex":"https://openalex.org/W7151235130","doi":"https://doi.org/10.48550/arxiv.2604.04057"},"language":null,"primary_location":{"id":"doi:10.48550/arxiv.2604.04057","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2604.04057","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":"Preprint"},"type":"preprint","indexed_in":["datacite"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://doi.org/10.48550/arxiv.2604.04057","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5022687215","display_name":"Chengyang Liang","orcid":"https://orcid.org/0009-0000-8358-4133"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Liang, Chengyang","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5133134357","display_name":"Dong Li","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Li, Dong","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"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/T12131","display_name":"Wireless Signal Modulation Classification","score":0.2506999969482422,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"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/T12131","display_name":"Wireless Signal Modulation Classification","score":0.2506999969482422,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"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/T10964","display_name":"Wireless Communication Security Techniques","score":0.08330000191926956,"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":0.08240000158548355,"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/channel","display_name":"Channel (broadcasting)","score":0.6717000007629395},{"id":"https://openalex.org/keywords/transmitter","display_name":"Transmitter","score":0.6072999835014343},{"id":"https://openalex.org/keywords/transmission","display_name":"Transmission (telecommunications)","score":0.5673999786376953},{"id":"https://openalex.org/keywords/noise","display_name":"Noise (video)","score":0.5020999908447266},{"id":"https://openalex.org/keywords/fuse","display_name":"Fuse (electrical)","score":0.47350001335144043},{"id":"https://openalex.org/keywords/signal","display_name":"SIGNAL (programming language)","score":0.46309998631477356},{"id":"https://openalex.org/keywords/focus","display_name":"Focus (optics)","score":0.4499000012874603},{"id":"https://openalex.org/keywords/representation","display_name":"Representation (politics)","score":0.43689998984336853},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.37880000472068787}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7728999853134155},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.6717000007629395},{"id":"https://openalex.org/C47798520","wikidata":"https://www.wikidata.org/wiki/Q190157","display_name":"Transmitter","level":3,"score":0.6072999835014343},{"id":"https://openalex.org/C761482","wikidata":"https://www.wikidata.org/wiki/Q118093","display_name":"Transmission (telecommunications)","level":2,"score":0.5673999786376953},{"id":"https://openalex.org/C99498987","wikidata":"https://www.wikidata.org/wiki/Q2210247","display_name":"Noise (video)","level":3,"score":0.5020999908447266},{"id":"https://openalex.org/C141353440","wikidata":"https://www.wikidata.org/wiki/Q182221","display_name":"Fuse (electrical)","level":2,"score":0.47350001335144043},{"id":"https://openalex.org/C2779843651","wikidata":"https://www.wikidata.org/wiki/Q7390335","display_name":"SIGNAL (programming language)","level":2,"score":0.46309998631477356},{"id":"https://openalex.org/C192209626","wikidata":"https://www.wikidata.org/wiki/Q190909","display_name":"Focus (optics)","level":2,"score":0.4499000012874603},{"id":"https://openalex.org/C2776359362","wikidata":"https://www.wikidata.org/wiki/Q2145286","display_name":"Representation (politics)","level":3,"score":0.43689998984336853},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.37880000472068787},{"id":"https://openalex.org/C2779767902","wikidata":"https://www.wikidata.org/wiki/Q17037278","display_name":"Molecular communication","level":4,"score":0.36959999799728394},{"id":"https://openalex.org/C557945733","wikidata":"https://www.wikidata.org/wiki/Q389772","display_name":"Data transmission","level":2,"score":0.3458000123500824},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.3447999954223633},{"id":"https://openalex.org/C120314980","wikidata":"https://www.wikidata.org/wiki/Q180634","display_name":"Distributed computing","level":1,"score":0.34459999203681946},{"id":"https://openalex.org/C13944312","wikidata":"https://www.wikidata.org/wiki/Q7512748","display_name":"Signal-to-noise ratio (imaging)","level":2,"score":0.33970001339912415},{"id":"https://openalex.org/C98045186","wikidata":"https://www.wikidata.org/wiki/Q205663","display_name":"Process (computing)","level":2,"score":0.3310000002384186},{"id":"https://openalex.org/C148063708","wikidata":"https://www.wikidata.org/wiki/Q5072511","display_name":"Channel state information","level":3,"score":0.32820001244544983},{"id":"https://openalex.org/C12713177","wikidata":"https://www.wikidata.org/wiki/Q1900281","display_name":"Perspective (graphical)","level":2,"score":0.3278999924659729},{"id":"https://openalex.org/C2780909371","wikidata":"https://www.wikidata.org/wiki/Q4801092","display_name":"Artificial noise","level":4,"score":0.32260000705718994},{"id":"https://openalex.org/C69357855","wikidata":"https://www.wikidata.org/wiki/Q163214","display_name":"Diffusion","level":2,"score":0.3222000002861023},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.2989000082015991},{"id":"https://openalex.org/C184337299","wikidata":"https://www.wikidata.org/wiki/Q1437428","display_name":"Semantics (computer science)","level":2,"score":0.29260000586509705},{"id":"https://openalex.org/C187691185","wikidata":"https://www.wikidata.org/wiki/Q2020720","display_name":"Grid","level":2,"score":0.2773999869823456},{"id":"https://openalex.org/C101765175","wikidata":"https://www.wikidata.org/wiki/Q577764","display_name":"Communications system","level":2,"score":0.27720001339912415},{"id":"https://openalex.org/C39890363","wikidata":"https://www.wikidata.org/wiki/Q36108","display_name":"Generative grammar","level":2,"score":0.26260000467300415},{"id":"https://openalex.org/C189693848","wikidata":"https://www.wikidata.org/wiki/Q6031064","display_name":"Information exchange","level":2,"score":0.2605000138282776},{"id":"https://openalex.org/C29265498","wikidata":"https://www.wikidata.org/wiki/Q7047719","display_name":"Noise measurement","level":3,"score":0.2524999976158142},{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.251800000667572},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.25110000371932983},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.2508000135421753}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.48550/arxiv.2604.04057","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2604.04057","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":"Preprint"}],"best_oa_location":{"id":"doi:10.48550/arxiv.2604.04057","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2604.04057","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":"Preprint"},"sustainable_development_goals":[{"score":0.5215193629264832,"id":"https://metadata.un.org/sdg/17","display_name":"Partnerships for the goals"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":[],"abstract_inverted_index":{"Semantic":[0],"communication":[1],"(SemCom)":[2],"has":[3],"emerged":[4],"as":[5,71,110,138],"a":[6,57,72,92],"transformative":[7],"paradigm":[8],"for":[9,141],"efficient":[10],"information":[11],"transmission":[12,81,174],"by":[13,153],"emphasizing":[14],"the":[15,41,78,85,106,115,118,126,139,142,147,155,168,173,185,189],"exchange":[16],"of":[17,43],"task-relevant":[18],"meaning":[19],"rather":[20],"than":[21],"raw":[22],"data.":[23],"While":[24],"diffusion-based":[25],"SemCom":[26],"models":[27],"have":[28],"demonstrated":[29],"remarkable":[30],"generative":[31],"capabilities,":[32],"existing":[33],"studies":[34],"predominantly":[35],"focus":[36],"on":[37,97],"point-to-point":[38],"links,":[39],"overlooking":[40],"potential":[42],"multi-user":[44,93],"(MU)":[45],"cooperation":[46,94],"in":[47],"MU":[48],"wireless":[49,80],"environments.":[50],"To":[51,113],"address":[52],"this":[53],"limitation,":[54],"we":[55,90],"propose":[56],"Cooperative":[58],"Time-Division":[59,98],"Diffusion":[60],"(CTD-Diff)":[61],"framework.":[62],"Unlike":[63],"traditional":[64],"approaches":[65],"that":[66,179],"view":[67],"channel":[68,157,163],"noise":[69,164],"solely":[70],"detriment,":[73],"our":[74],"framework":[75],"innovatively":[76],"integrates":[77],"noisy":[79,134],"process":[82],"directly":[83],"into":[84,165],"forward":[86],"diffusion":[87,144,166],"chain.":[88],"Specifically,":[89],"design":[91],"mechanism":[95],"based":[96],"Multiple":[99],"Access":[100],"(TDMA),":[101],"where":[102],"idle":[103],"users":[104],"overhearing":[105],"active":[107],"transmitter":[108],"act":[109],"semantic":[111,135],"collaborators.":[112],"maximize":[114],"signal":[116,122,128],"fidelity,":[117],"receiver":[119,148],"employs":[120],"direct":[121,127],"aggregation":[123],"to":[124,149],"fuse":[125],"with":[129],"cooperative":[130],"copies.":[131],"This":[132],"aggregated":[133],"representation":[136],"serves":[137],"condition":[140],"reverse":[143],"process,":[145],"allowing":[146],"reconstruct":[150],"high-fidelity":[151],"data":[152],"mitigating":[154],"cumulative":[156],"distortions.":[158],"By":[159],"effectively":[160],"converting":[161],"physical":[162],"noise,":[167],"proposed":[169],"method":[170],"significantly":[171],"enhances":[172],"reliability.":[175],"Extensive":[176],"experiments":[177],"demonstrate":[178],"CTD-Diff":[180],"outperforms":[181],"various":[182],"baselines":[183],"regarding":[184],"reconstruction":[186],"accuracy":[187],"and":[188],"perceptual":[190],"quality,":[191],"particularly":[192],"under":[193],"challenging":[194],"low":[195],"signal-to-noise":[196],"ratio":[197],"(SNR)":[198],"conditions.":[199]},"counts_by_year":[],"updated_date":"2026-07-01T06:00:48.157686","created_date":"2026-04-08T00:00:00"}
