{"id":"https://openalex.org/W2966345406","doi":"https://doi.org/10.1109/tvt.2020.3022690","title":"Codeword Position Index Modulation Design for Sparse Code Multiple Access System","display_name":"Codeword Position Index Modulation Design for Sparse Code Multiple Access System","publication_year":2020,"publication_date":"2020-09-08","ids":{"openalex":"https://openalex.org/W2966345406","doi":"https://doi.org/10.1109/tvt.2020.3022690","mag":"2966345406"},"language":"en","primary_location":{"id":"doi:10.1109/tvt.2020.3022690","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tvt.2020.3022690","pdf_url":null,"source":{"id":"https://openalex.org/S10936095","display_name":"IEEE Transactions on Vehicular Technology","issn_l":"0018-9545","issn":["0018-9545","1939-9359"],"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 Transactions on Vehicular Technology","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://arxiv.org/pdf/1812.10316","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5067234489","display_name":"Ke Lai","orcid":null},"institutions":[{"id":"https://openalex.org/I170215575","display_name":"National University of Defense Technology","ror":"https://ror.org/05d2yfz11","country_code":"CN","type":"education","lineage":["https://openalex.org/I170215575"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Ke Lai","raw_affiliation_strings":["Department of Communication Engineering, College of Electronic Science, and Engineering, National University of Defence technology, Changsha, Hunan, China"],"raw_orcid":"https://orcid.org/0000-0002-9098-0756","affiliations":[{"raw_affiliation_string":"Department of Communication Engineering, College of Electronic Science, and Engineering, National University of Defence technology, Changsha, Hunan, China","institution_ids":["https://openalex.org/I170215575"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5110911326","display_name":"Jing Lei","orcid":"https://orcid.org/0000-0002-5838-5826"},"institutions":[{"id":"https://openalex.org/I170215575","display_name":"National University of Defense Technology","ror":"https://ror.org/05d2yfz11","country_code":"CN","type":"education","lineage":["https://openalex.org/I170215575"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Jing Lei","raw_affiliation_strings":["Department of Communication Engineering, College of Electronic Science, and Engineering, National University of Defence technology, Changsha, Hunan, China"],"raw_orcid":"https://orcid.org/0000-0002-5838-5826","affiliations":[{"raw_affiliation_string":"Department of Communication Engineering, College of Electronic Science, and Engineering, National University of Defence technology, Changsha, Hunan, China","institution_ids":["https://openalex.org/I170215575"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5012458888","display_name":"Lei Wen","orcid":null},"institutions":[{"id":"https://openalex.org/I170215575","display_name":"National University of Defense Technology","ror":"https://ror.org/05d2yfz11","country_code":"CN","type":"education","lineage":["https://openalex.org/I170215575"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Lei Wen","raw_affiliation_strings":["Department of Communication Engineering, College of Electronic Science, and Engineering, National University of Defence technology, Changsha, Hunan, China"],"raw_orcid":"https://orcid.org/0000-0001-5104-4490","affiliations":[{"raw_affiliation_string":"Department of Communication Engineering, College of Electronic Science, and Engineering, National University of Defence technology, Changsha, Hunan, China","institution_ids":["https://openalex.org/I170215575"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5012861792","display_name":"Gaojie Chen","orcid":"https://orcid.org/0000-0003-2978-0365"},"institutions":[{"id":"https://openalex.org/I153648349","display_name":"University of Leicester","ror":"https://ror.org/04h699437","country_code":"GB","type":"education","lineage":["https://openalex.org/I153648349"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Gaojie Chen","raw_affiliation_strings":["Department of Engineering, University of Leicester, Leicester, U.K"],"raw_orcid":"https://orcid.org/0000-0003-2978-0365","affiliations":[{"raw_affiliation_string":"Department of Engineering, University of Leicester, Leicester, U.K","institution_ids":["https://openalex.org/I153648349"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":4,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.2081,"has_fulltext":false,"cited_by_count":2,"citation_normalized_percentile":{"value":0.48908747,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":94},"biblio":{"volume":"69","issue":"11","first_page":"13273","last_page":"13288"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11458","display_name":"Advanced Wireless Communication Technologies","score":0.9995999932289124,"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":0.9995999932289124,"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/T11797","display_name":"graph theory and CDMA systems","score":0.9940999746322632,"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/T10851","display_name":"Optical Wireless Communication Technologies","score":0.9929999709129333,"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/code-word","display_name":"Code word","score":0.9216748476028442},{"id":"https://openalex.org/keywords/code","display_name":"Code (set theory)","score":0.6810669302940369},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6514951586723328},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.5763314962387085},{"id":"https://openalex.org/keywords/bit-error-rate","display_name":"Bit error rate","score":0.5388685464859009},{"id":"https://openalex.org/keywords/position","display_name":"Position (finance)","score":0.471251517534256},{"id":"https://openalex.org/keywords/modulation","display_name":"Modulation (music)","score":0.4430694580078125},{"id":"https://openalex.org/keywords/code-rate","display_name":"Code rate","score":0.41076207160949707},{"id":"https://openalex.org/keywords/real-time-computing","display_name":"Real-time computing","score":0.38626325130462646},{"id":"https://openalex.org/keywords/decoding-methods","display_name":"Decoding methods","score":0.2564626932144165},{"id":"https://openalex.org/keywords/set","display_name":"Set (abstract data type)","score":0.18413570523262024},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.05739390850067139}],"concepts":[{"id":"https://openalex.org/C153207627","wikidata":"https://www.wikidata.org/wiki/Q863873","display_name":"Code word","level":3,"score":0.9216748476028442},{"id":"https://openalex.org/C2776760102","wikidata":"https://www.wikidata.org/wiki/Q5139990","display_name":"Code (set theory)","level":3,"score":0.6810669302940369},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6514951586723328},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.5763314962387085},{"id":"https://openalex.org/C56296756","wikidata":"https://www.wikidata.org/wiki/Q840922","display_name":"Bit error rate","level":3,"score":0.5388685464859009},{"id":"https://openalex.org/C198082294","wikidata":"https://www.wikidata.org/wiki/Q3399648","display_name":"Position (finance)","level":2,"score":0.471251517534256},{"id":"https://openalex.org/C123079801","wikidata":"https://www.wikidata.org/wiki/Q750240","display_name":"Modulation (music)","level":2,"score":0.4430694580078125},{"id":"https://openalex.org/C206468330","wikidata":"https://www.wikidata.org/wiki/Q834373","display_name":"Code rate","level":3,"score":0.41076207160949707},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.38626325130462646},{"id":"https://openalex.org/C57273362","wikidata":"https://www.wikidata.org/wiki/Q576722","display_name":"Decoding methods","level":2,"score":0.2564626932144165},{"id":"https://openalex.org/C177264268","wikidata":"https://www.wikidata.org/wiki/Q1514741","display_name":"Set (abstract data type)","level":2,"score":0.18413570523262024},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.05739390850067139},{"id":"https://openalex.org/C24890656","wikidata":"https://www.wikidata.org/wiki/Q82811","display_name":"Acoustics","level":1,"score":0.0},{"id":"https://openalex.org/C162324750","wikidata":"https://www.wikidata.org/wiki/Q8134","display_name":"Economics","level":0,"score":0.0},{"id":"https://openalex.org/C10138342","wikidata":"https://www.wikidata.org/wiki/Q43015","display_name":"Finance","level":1,"score":0.0},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/tvt.2020.3022690","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tvt.2020.3022690","pdf_url":null,"source":{"id":"https://openalex.org/S10936095","display_name":"IEEE Transactions on Vehicular Technology","issn_l":"0018-9545","issn":["0018-9545","1939-9359"],"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 Transactions on Vehicular Technology","raw_type":"journal-article"},{"id":"mag:2966345406","is_oa":true,"landing_page_url":"https://arxiv.org/pdf/1812.10316","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":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"arXiv (Cornell University)","raw_type":null}],"best_oa_location":{"id":"mag:2966345406","is_oa":true,"landing_page_url":"https://arxiv.org/pdf/1812.10316","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":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"arXiv (Cornell University)","raw_type":null},"sustainable_development_goals":[{"display_name":"Affordable and clean energy","id":"https://metadata.un.org/sdg/7","score":0.6800000071525574}],"awards":[{"id":"https://openalex.org/G3524704529","display_name":null,"funder_award_id":"61702536","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G4577732683","display_name":null,"funder_award_id":"61502518","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":30,"referenced_works":["https://openalex.org/W1650423943","https://openalex.org/W1971549192","https://openalex.org/W1977332235","https://openalex.org/W2023608649","https://openalex.org/W2025052910","https://openalex.org/W2029262884","https://openalex.org/W2033673467","https://openalex.org/W2098076345","https://openalex.org/W2109191808","https://openalex.org/W2123649511","https://openalex.org/W2131101456","https://openalex.org/W2162273329","https://openalex.org/W2328709100","https://openalex.org/W2496901463","https://openalex.org/W2540924152","https://openalex.org/W2541373058","https://openalex.org/W2608395959","https://openalex.org/W2615872748","https://openalex.org/W2621135414","https://openalex.org/W2774725773","https://openalex.org/W2775202597","https://openalex.org/W2784665603","https://openalex.org/W2792359717","https://openalex.org/W2900083088","https://openalex.org/W2901576520","https://openalex.org/W2957371207","https://openalex.org/W2962896080","https://openalex.org/W2963123590","https://openalex.org/W4255390251","https://openalex.org/W4256217385"],"related_works":["https://openalex.org/W2951246892","https://openalex.org/W2185584029","https://openalex.org/W2821592530","https://openalex.org/W2563793424","https://openalex.org/W2983854605","https://openalex.org/W2189419313","https://openalex.org/W2472311755","https://openalex.org/W3147136477","https://openalex.org/W1571990828","https://openalex.org/W2086954816","https://openalex.org/W2787314971","https://openalex.org/W2980829950","https://openalex.org/W2944557540","https://openalex.org/W2940433264","https://openalex.org/W261466691","https://openalex.org/W2185475419","https://openalex.org/W2078410129","https://openalex.org/W3087799500","https://openalex.org/W2772180333","https://openalex.org/W2186260981"],"abstract_inverted_index":{"Codeword":[0],"position":[1],"index":[2,20,96],"based":[3],"sparse":[4],"code":[5],"multiple":[6],"access":[7],"(CPI-SCMA)":[8],"is":[9,61,101,145,174],"a":[10,53,87],"novel":[11],"variant":[12],"of":[13,19,49,77,126,132,154,162,167,210],"SCMA":[14,35,42],"that":[15,43,100,184],"employs":[16],"the":[17,33,40,46,57,66,75,78,110,124,127,133,140,150,160,185,196,205,208],"idea":[18],"modulation":[21],"(IM),":[22],"which":[23],"has":[24],"been":[25],"proposed":[26,186],"recently":[27],"as":[28,69,91,170],"an":[29,164],"effective":[30],"alternative":[31],"to":[32,39,52,122,157,217],"conventional":[34,41],"system.":[36,128],"In":[37,81],"contrast":[38],"directly":[44],"maps":[45],"information":[47],"bits":[48],"each":[50],"user":[51],"predefined":[54],"M-point":[55,67],"codebook,":[56],"data":[58],"in":[59,70,114,195],"CPI-SCMA":[60,168,172],"not":[62,188],"only":[63,189],"conveyed":[64],"by":[65,74],"codebook":[68],"SCMA,":[71],"but":[72,202],"also":[73,146,203],"indexes":[76],"codeword":[79],"positions.":[80],"this":[82],"paper,":[83],"we":[84,108],"first":[85],"propose":[86],"simplified":[88],"detector":[89,143],"termed":[90,169],"message":[92],"passing":[93],"algorithm":[94],"aided":[95],"reliability":[97],"detection":[98],"(MPA-IRD)":[99],"more":[102],"suitable":[103],"for":[104],"practical":[105],"implementation.":[106],"Moreover,":[107],"investigate":[109],"spectral":[111],"efficiency":[112],"(SE)":[113],"CPI-SCMA,":[115,163],"and":[116,181,207],"two":[117],"important":[118],"features":[119],"are":[120],"identified":[121],"facilitate":[123],"design":[125],"A":[129],"tight":[130],"approximation":[131],"average":[134],"block":[135],"error":[136,151,192,215],"probability":[137],"(ABLEP)":[138],"under":[139,212],"maximum":[141],"likelihood":[142],"(MLD)":[144],"derived":[147],"from":[148],"studying":[149],"rate":[152,193],"performance":[153,194],"CPI-SCMA.":[155],"Finally,":[156],"further":[158],"improve":[159],"SE":[161],"enhanced":[165],"version":[166],"hybrid":[171],"(HCPI-SCMA)":[173],"proposed.":[175],"Itis":[176],"shown":[177],"via":[178],"both":[179],"simulation,":[180],"analytical":[182],"results":[183],"scheme":[187],"achieves":[190],"better":[191],"high":[197],"signal-to-noise":[198],"ratio":[199],"(SNR)":[200],"region":[201],"improves":[204],"SE,":[206],"level":[209],"robustness":[211],"channel":[213],"estimation":[214],"compares":[216],"SCMA.":[218]},"counts_by_year":[{"year":2023,"cited_by_count":1},{"year":2022,"cited_by_count":1}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}