{"id":"https://openalex.org/W2963312088","doi":"https://doi.org/10.1109/mwc.2018.1700134","title":"Non-Orthogonal Multiple Access for Cooperative Communications: Challenges, Opportunities, and Trends","display_name":"Non-Orthogonal Multiple Access for Cooperative Communications: Challenges, Opportunities, and Trends","publication_year":2018,"publication_date":"2018-04-01","ids":{"openalex":"https://openalex.org/W2963312088","doi":"https://doi.org/10.1109/mwc.2018.1700134","mag":"2963312088"},"language":"en","primary_location":{"id":"doi:10.1109/mwc.2018.1700134","is_oa":false,"landing_page_url":"https://doi.org/10.1109/mwc.2018.1700134","pdf_url":null,"source":{"id":"https://openalex.org/S146764194","display_name":"IEEE Wireless Communications","issn_l":"1536-1284","issn":["1536-1284","1558-0687"],"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 Wireless Communications","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/A5008043434","display_name":"Dehuan Wan","orcid":"https://orcid.org/0000-0002-6698-583X"},"institutions":[{"id":"https://openalex.org/I90610280","display_name":"South China University of Technology","ror":"https://ror.org/0530pts50","country_code":"CN","type":"education","lineage":["https://openalex.org/I90610280"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Dehuan Wan","raw_affiliation_strings":["School of Electronic and Information Engineering, South China University of Technology"],"affiliations":[{"raw_affiliation_string":"School of Electronic and Information Engineering, South China University of Technology","institution_ids":["https://openalex.org/I90610280"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5065457510","display_name":"Miaowen Wen","orcid":"https://orcid.org/0000-0002-9638-7048"},"institutions":[{"id":"https://openalex.org/I90610280","display_name":"South China University of Technology","ror":"https://ror.org/0530pts50","country_code":"CN","type":"education","lineage":["https://openalex.org/I90610280"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Miaowen Wen","raw_affiliation_strings":["School of Electronic and Information Engineering, South China University of Technology"],"affiliations":[{"raw_affiliation_string":"School of Electronic and Information Engineering, South China University of Technology","institution_ids":["https://openalex.org/I90610280"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5013766144","display_name":"Fei Ji","orcid":"https://orcid.org/0000-0003-1549-3322"},"institutions":[{"id":"https://openalex.org/I90610280","display_name":"South China University of Technology","ror":"https://ror.org/0530pts50","country_code":"CN","type":"education","lineage":["https://openalex.org/I90610280"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Fei Ji","raw_affiliation_strings":["School of Electronic and Information Engineering, South China University of Technology"],"affiliations":[{"raw_affiliation_string":"School of Electronic and Information Engineering, South China University of Technology","institution_ids":["https://openalex.org/I90610280"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5005656538","display_name":"Hua Yu","orcid":"https://orcid.org/0000-0002-0231-2978"},"institutions":[{"id":"https://openalex.org/I90610280","display_name":"South China University of Technology","ror":"https://ror.org/0530pts50","country_code":"CN","type":"education","lineage":["https://openalex.org/I90610280"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Hua Yu","raw_affiliation_strings":["School of Electronic and Information Engineering, South China University of Technology"],"affiliations":[{"raw_affiliation_string":"School of Electronic and Information Engineering, South China University of Technology","institution_ids":["https://openalex.org/I90610280"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5058218225","display_name":"Fangjiong Chen","orcid":"https://orcid.org/0000-0003-1031-492X"},"institutions":[{"id":"https://openalex.org/I90610280","display_name":"South China University of Technology","ror":"https://ror.org/0530pts50","country_code":"CN","type":"education","lineage":["https://openalex.org/I90610280"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Fangjiong Chen","raw_affiliation_strings":["School of Electronic and Information Engineering, South China University of Technology"],"affiliations":[{"raw_affiliation_string":"School of Electronic and Information Engineering, South China University of Technology","institution_ids":["https://openalex.org/I90610280"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5008043434"],"corresponding_institution_ids":["https://openalex.org/I90610280"],"apc_list":null,"apc_paid":null,"fwci":13.4774,"has_fulltext":false,"cited_by_count":188,"citation_normalized_percentile":{"value":0.99182366,"is_in_top_1_percent":true,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":98,"max":100},"biblio":{"volume":"25","issue":"2","first_page":"109","last_page":"117"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11458","display_name":"Advanced Wireless Communication Technologies","score":1.0,"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":1.0,"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/T10796","display_name":"Cooperative Communication and Network Coding","score":0.9886999726295471,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"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":0.9811000227928162,"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/computer-science","display_name":"Computer science","score":0.8257843255996704},{"id":"https://openalex.org/keywords/telecommunications-link","display_name":"Telecommunications link","score":0.7867075204849243},{"id":"https://openalex.org/keywords/noma","display_name":"Noma","score":0.7809628248214722},{"id":"https://openalex.org/keywords/relay","display_name":"Relay","score":0.6821960806846619},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.5766904950141907},{"id":"https://openalex.org/keywords/overhead","display_name":"Overhead (engineering)","score":0.5627048015594482},{"id":"https://openalex.org/keywords/spectral-efficiency","display_name":"Spectral efficiency","score":0.5600557327270508},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.45409199595451355},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.448416143655777},{"id":"https://openalex.org/keywords/efficient-energy-use","display_name":"Efficient energy use","score":0.4439316391944885},{"id":"https://openalex.org/keywords/wireless-network","display_name":"Wireless network","score":0.43087732791900635},{"id":"https://openalex.org/keywords/key","display_name":"Key (lock)","score":0.4241180121898651},{"id":"https://openalex.org/keywords/power","display_name":"Power (physics)","score":0.2988499402999878},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.20489370822906494},{"id":"https://openalex.org/keywords/computer-security","display_name":"Computer security","score":0.12178978323936462},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.08001351356506348},{"id":"https://openalex.org/keywords/electrical-engineering","display_name":"Electrical engineering","score":0.07456332445144653}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8257843255996704},{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.7867075204849243},{"id":"https://openalex.org/C2775918612","wikidata":"https://www.wikidata.org/wiki/Q994794","display_name":"Noma","level":3,"score":0.7809628248214722},{"id":"https://openalex.org/C2778156585","wikidata":"https://www.wikidata.org/wiki/Q174053","display_name":"Relay","level":3,"score":0.6821960806846619},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.5766904950141907},{"id":"https://openalex.org/C2779960059","wikidata":"https://www.wikidata.org/wiki/Q7113681","display_name":"Overhead (engineering)","level":2,"score":0.5627048015594482},{"id":"https://openalex.org/C137246740","wikidata":"https://www.wikidata.org/wiki/Q583970","display_name":"Spectral efficiency","level":3,"score":0.5600557327270508},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.45409199595451355},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.448416143655777},{"id":"https://openalex.org/C2742236","wikidata":"https://www.wikidata.org/wiki/Q924713","display_name":"Efficient energy use","level":2,"score":0.4439316391944885},{"id":"https://openalex.org/C108037233","wikidata":"https://www.wikidata.org/wiki/Q11375","display_name":"Wireless network","level":3,"score":0.43087732791900635},{"id":"https://openalex.org/C26517878","wikidata":"https://www.wikidata.org/wiki/Q228039","display_name":"Key (lock)","level":2,"score":0.4241180121898651},{"id":"https://openalex.org/C163258240","wikidata":"https://www.wikidata.org/wiki/Q25342","display_name":"Power (physics)","level":2,"score":0.2988499402999878},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.20489370822906494},{"id":"https://openalex.org/C38652104","wikidata":"https://www.wikidata.org/wiki/Q3510521","display_name":"Computer security","level":1,"score":0.12178978323936462},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.08001351356506348},{"id":"https://openalex.org/C119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","level":1,"score":0.07456332445144653},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.0},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/mwc.2018.1700134","is_oa":false,"landing_page_url":"https://doi.org/10.1109/mwc.2018.1700134","pdf_url":null,"source":{"id":"https://openalex.org/S146764194","display_name":"IEEE Wireless Communications","issn_l":"1536-1284","issn":["1536-1284","1558-0687"],"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 Wireless Communications","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.8899999856948853,"display_name":"Affordable and clean energy","id":"https://metadata.un.org/sdg/7"}],"awards":[{"id":"https://openalex.org/G1023919524","display_name":null,"funder_award_id":", Grant","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G1231421488","display_name":null,"funder_award_id":"under","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G1477544716","display_name":null,"funder_award_id":"Guangdong","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G1606468471","display_name":null,"funder_award_id":"61671211","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G2087396116","display_name":null,"funder_award_id":"China","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G2819354775","display_name":null,"funder_award_id":"61431005","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G3317480652","display_name":null,"funder_award_id":"Science","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G3481872575","display_name":null,"funder_award_id":"U1701265","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G391238517","display_name":null,"funder_award_id":", and","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G5415226051","display_name":null,"funder_award_id":"61771202","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G5994120800","display_name":null,"funder_award_id":"Natural","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G6016035139","display_name":null,"funder_award_id":"71202","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G6238813735","display_name":null,"funder_award_id":"U170126","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G6499083388","display_name":null,"funder_award_id":"2016A030308006","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G7272398329","display_name":null,"funder_award_id":"616712","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G8756849778","display_name":null,"funder_award_id":"61501190","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":17,"referenced_works":["https://openalex.org/W1922937245","https://openalex.org/W1997834106","https://openalex.org/W2086559523","https://openalex.org/W2277419020","https://openalex.org/W2478927648","https://openalex.org/W2500307208","https://openalex.org/W2509696551","https://openalex.org/W2522847968","https://openalex.org/W2532095825","https://openalex.org/W2566155463","https://openalex.org/W2579217754","https://openalex.org/W2584333789","https://openalex.org/W2767285821","https://openalex.org/W2963234131","https://openalex.org/W2963634826","https://openalex.org/W2964241829","https://openalex.org/W3101450547"],"related_works":["https://openalex.org/W3165611029","https://openalex.org/W2370038111","https://openalex.org/W3191669748","https://openalex.org/W2510978767","https://openalex.org/W2900836405","https://openalex.org/W2293822216","https://openalex.org/W4318262205","https://openalex.org/W3007170335","https://openalex.org/W2963158738","https://openalex.org/W3114372513"],"abstract_inverted_index":{"NOMA":[0,30],"is":[1,75],"a":[2,53],"promising":[3],"radio":[4],"access":[5],"technique":[6],"for":[7,78,107,124],"next-generation":[8],"wireless":[9],"networks.":[10],"In":[11],"this":[12,127],"article,":[13],"we":[14,44],"investigate":[15],"the":[16,27,57,79,85,92,108],"NOMA-based":[17,111],"cooperative":[18,112],"relay":[19,113],"network.":[20],"We":[21],"begin":[22],"with":[23,115],"an":[24],"introduction":[25],"of":[26,59,94,110],"existing":[28],"relay-assisted":[29],"systems":[31,114],"by":[32],"classifying":[33],"them":[34],"into":[35],"three":[36],"categories:":[37],"uplink,":[38],"downlink,":[39],"and":[40,48,51,64,88,103],"composite":[41,80],"architectures.":[42],"Then":[43],"discuss":[45],"their":[46],"principles":[47],"key":[49],"features,":[50],"provide":[52,122],"comprehensive":[54],"comparison":[55],"from":[56],"perspective":[58],"spectral":[60],"efficiency,":[61,63],"energy":[62],"total":[65],"transmit":[66],"power.":[67],"A":[68],"novel":[69],"strategy":[70],"called":[71],"hybrid":[72],"power":[73],"allocation":[74],"further":[76],"discussed":[77],"architecture,":[81],"which":[82],"can":[83],"reduce":[84],"computational":[86],"complexity":[87],"signaling":[89],"overhead":[90],"at":[91],"expense":[93],"marginal":[95],"sum":[96],"rate":[97],"degradation.":[98],"Finally,":[99],"major":[100],"challenges,":[101],"opportunities,":[102],"future":[104],"research":[105],"trends":[106],"design":[109],"other":[116],"techniques":[117],"are":[118],"also":[119],"highlighted":[120],"to":[121],"insights":[123],"researchers":[125],"in":[126],"field.":[128]},"counts_by_year":[{"year":2026,"cited_by_count":2},{"year":2025,"cited_by_count":14},{"year":2024,"cited_by_count":17},{"year":2023,"cited_by_count":22},{"year":2022,"cited_by_count":30},{"year":2021,"cited_by_count":29},{"year":2020,"cited_by_count":35},{"year":2019,"cited_by_count":34},{"year":2018,"cited_by_count":5}],"updated_date":"2026-04-13T07:58:08.660418","created_date":"2025-10-10T00:00:00"}