{"id":"https://openalex.org/W4405975514","doi":"https://doi.org/10.1109/icspcs63175.2024.10815812","title":"Neural-Network-Assisted Multi-Dimensional Constellation Design for Downlink NOMA Systems","display_name":"Neural-Network-Assisted Multi-Dimensional Constellation Design for Downlink NOMA Systems","publication_year":2024,"publication_date":"2024-12-16","ids":{"openalex":"https://openalex.org/W4405975514","doi":"https://doi.org/10.1109/icspcs63175.2024.10815812"},"language":"en","primary_location":{"id":"doi:10.1109/icspcs63175.2024.10815812","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icspcs63175.2024.10815812","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2024 17th International Conference on Signal Processing and Communication System (ICSPCS)","raw_type":"proceedings-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/A5031417415","display_name":"Benjamin K. Ng","orcid":null},"institutions":[{"id":"https://openalex.org/I49835588","display_name":"Macao Polytechnic University","ror":"https://ror.org/02sf5td35","country_code":"MO","type":"education","lineage":["https://openalex.org/I49835588"]}],"countries":["MO"],"is_corresponding":false,"raw_author_name":"Benjamin K Ng","raw_affiliation_strings":["Macao Polytechnic University,Faculty of Applied Sciences,Macao S.A.R.,China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Macao Polytechnic University,Faculty of Applied Sciences,Macao S.A.R.,China","institution_ids":["https://openalex.org/I49835588"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5089368710","display_name":"Chan\u2013Tong Lam","orcid":"https://orcid.org/0000-0002-8022-7744"},"institutions":[{"id":"https://openalex.org/I49835588","display_name":"Macao Polytechnic University","ror":"https://ror.org/02sf5td35","country_code":"MO","type":"education","lineage":["https://openalex.org/I49835588"]}],"countries":["MO"],"is_corresponding":false,"raw_author_name":"Chan-Tong Lam","raw_affiliation_strings":["Macao Polytechnic University,Faculty of Applied Sciences,Macao S.A.R.,China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Macao Polytechnic University,Faculty of Applied Sciences,Macao S.A.R.,China","institution_ids":["https://openalex.org/I49835588"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5060266143","display_name":"Eddie K. L. Law","orcid":null},"institutions":[{"id":"https://openalex.org/I49835588","display_name":"Macao Polytechnic University","ror":"https://ror.org/02sf5td35","country_code":"MO","type":"education","lineage":["https://openalex.org/I49835588"]}],"countries":["MO"],"is_corresponding":false,"raw_author_name":"Eddie K.L. Law","raw_affiliation_strings":["Macao Polytechnic University,Faculty of Applied Sciences,Macao S.A.R.,China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Macao Polytechnic University,Faculty of Applied Sciences,Macao S.A.R.,China","institution_ids":["https://openalex.org/I49835588"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5022354164","display_name":"Mar\u00edlia Curado","orcid":"https://orcid.org/0000-0001-6760-4675"},"institutions":[{"id":"https://openalex.org/I76903346","display_name":"University of Coimbra","ror":"https://ror.org/04z8k9a98","country_code":"PT","type":"education","lineage":["https://openalex.org/I76903346"]}],"countries":["PT"],"is_corresponding":false,"raw_author_name":"Marilia Curado","raw_affiliation_strings":["University of Coimbra, Centre for Informatics and Systems of the University of Coimbra,Department of Informatics Engineering"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Coimbra, Centre for Informatics and Systems of the University of Coimbra,Department of Informatics Engineering","institution_ids":["https://openalex.org/I76903346"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5028427519","display_name":"Edmundo Monteiro","orcid":"https://orcid.org/0000-0003-1615-2925"},"institutions":[{"id":"https://openalex.org/I76903346","display_name":"University of Coimbra","ror":"https://ror.org/04z8k9a98","country_code":"PT","type":"education","lineage":["https://openalex.org/I76903346"]}],"countries":["PT"],"is_corresponding":false,"raw_author_name":"Edmundo Monteiro","raw_affiliation_strings":["University of Coimbra, Centre for Informatics and Systems of the University of Coimbra,Department of Informatics Engineering"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Coimbra, Centre for Informatics and Systems of the University of Coimbra,Department of Informatics Engineering","institution_ids":["https://openalex.org/I76903346"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":5,"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":0.21736472,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"6"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11458","display_name":"Advanced Wireless Communication Technologies","score":0.992900013923645,"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/T11458","display_name":"Advanced Wireless Communication Technologies","score":0.992900013923645,"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/T12042","display_name":"Satellite Communication Systems","score":0.9613000154495239,"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/T11873","display_name":"PAPR reduction in OFDM","score":0.953000009059906,"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/noma","display_name":"Noma","score":0.9488180875778198},{"id":"https://openalex.org/keywords/telecommunications-link","display_name":"Telecommunications link","score":0.7716988325119019},{"id":"https://openalex.org/keywords/constellation","display_name":"Constellation","score":0.7635229825973511},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6691361665725708},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.44198957085609436},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.33553749322891235},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.05401891469955444}],"concepts":[{"id":"https://openalex.org/C2775918612","wikidata":"https://www.wikidata.org/wiki/Q994794","display_name":"Noma","level":3,"score":0.9488180875778198},{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.7716988325119019},{"id":"https://openalex.org/C70352696","wikidata":"https://www.wikidata.org/wiki/Q8928","display_name":"Constellation","level":2,"score":0.7635229825973511},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6691361665725708},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.44198957085609436},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.33553749322891235},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.05401891469955444},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/icspcs63175.2024.10815812","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icspcs63175.2024.10815812","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2024 17th International Conference on Signal Processing and Communication System (ICSPCS)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[{"id":"https://openalex.org/F4320321655","display_name":"Science and Technology Development Fund","ror":"https://ror.org/044vr6g03"},{"id":"https://openalex.org/F4320330374","display_name":"Foundation for Science and Technology","ror":null}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":11,"referenced_works":["https://openalex.org/W2064333058","https://openalex.org/W2343463506","https://openalex.org/W2793934635","https://openalex.org/W2888797613","https://openalex.org/W2896826108","https://openalex.org/W2963104899","https://openalex.org/W3012555737","https://openalex.org/W3046188540","https://openalex.org/W3109153616","https://openalex.org/W4318624596","https://openalex.org/W4387883696"],"related_works":["https://openalex.org/W3030525848","https://openalex.org/W4385197910","https://openalex.org/W2340639785","https://openalex.org/W4404253608","https://openalex.org/W3010814398","https://openalex.org/W4385197899","https://openalex.org/W3005957545","https://openalex.org/W2076432172","https://openalex.org/W3165611029","https://openalex.org/W2370038111"],"abstract_inverted_index":{"Using":[0],"the":[1,15,23,32,58,69,73,83,91,97,104,112,137,140,156,173],"neural":[2],"network":[3],"(NN)":[4],"as":[5,48],"a":[6,100],"means":[7],"to":[8,164],"solve":[9],"model-based":[10],"optimization":[11],"problem,":[12],"we":[13],"propose":[14,80],"finite-alphabet":[16],"constellation":[17,70,89,167],"design":[18],"which":[19,95,171],"aims":[20],"at":[21],"optimizing":[22],"sumrate":[24],"performance":[25,120],"of":[26,75,85,99],"downlink":[27],"power-domain":[28],"NOMA":[29],"system":[30,170],"when":[31,68],"base":[33],"station":[34],"is":[35],"equipped":[36],"with":[37,82],"one":[38],"(SISO)":[39],"or":[40,50,72],"multiple":[41],"antennas":[42],"(MISO).":[43],"While":[44],"traditional":[45],"constellations":[46,60],"such":[47],"QPSK":[49],"QAM":[51],"are":[52],"deemed":[53],"suboptimal":[54],"in":[55,103,136],"NOMA,":[56],"finding":[57],"optimal":[59],"using":[61],"numerical":[62],"searches":[63],"becomes":[64],"prohibitively":[65],"complex,":[66],"especially":[67],"size":[71],"number":[74],"transmit":[76],"antenna":[77],"increases.":[78],"We":[79,126],"that,":[81],"aid":[84],"NN,":[86,105],"arbitrary":[87],"multi-dimensional":[88],"improving":[90],"information-theoretic":[92],"weighted":[93],"sum-rate,":[94],"takes":[96],"form":[98],"loss":[101],"function":[102],"can":[106,144,160],"be":[107,145,161],"generated.":[108],"This":[109],"departs":[110],"from":[111],"existing":[113,174],"AI":[114],"approaches":[115],"mainly":[116],"focusing":[117],"on":[118,123],"symbol-level":[119],"and":[121,131],"relying":[122],"end-to-end":[124],"training.":[125,151],"consider":[127],"both":[128],"perfect":[129],"CSI":[130,133],"imperfect":[132],"scenarios,":[134],"where":[135],"latter":[138],"case":[139],"channel":[141],"estimation":[142],"errors":[143],"accounted":[146],"for":[147,168],"by":[148],"proper":[149],"NN":[150],"Simulations":[152],"results":[153],"show":[154],"that":[155],"proposed":[157],"NN-assisted":[158],"approach":[159],"effectively":[162],"used":[163],"produce":[165],"multidimensional":[166],"MISO-NOMA":[169],"outperforms":[172],"approaches.":[175]},"counts_by_year":[],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}
