{"id":"https://openalex.org/W2087541534","doi":"https://doi.org/10.1109/tit.2009.2013041","title":"Quaternary Constant-Amplitude Codes for Multicode CDMA","display_name":"Quaternary Constant-Amplitude Codes for Multicode CDMA","publication_year":2009,"publication_date":"2009-03-19","ids":{"openalex":"https://openalex.org/W2087541534","doi":"https://doi.org/10.1109/tit.2009.2013041","mag":"2087541534"},"language":"en","primary_location":{"id":"doi:10.1109/tit.2009.2013041","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tit.2009.2013041","pdf_url":null,"source":{"id":"https://openalex.org/S4502562","display_name":"IEEE Transactions on Information Theory","issn_l":"0018-9448","issn":["0018-9448","1557-9654"],"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 Information Theory","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/A5072549968","display_name":"Kai-Uwe Schmidt","orcid":null},"institutions":[{"id":"https://openalex.org/I18014758","display_name":"Simon Fraser University","ror":"https://ror.org/0213rcc28","country_code":"CA","type":"education","lineage":["https://openalex.org/I18014758"]},{"id":"https://openalex.org/I78650965","display_name":"Technische Universit\u00e4t Dresden","ror":"https://ror.org/042aqky30","country_code":"DE","type":"education","lineage":["https://openalex.org/I78650965"]}],"countries":["CA","DE"],"is_corresponding":true,"raw_author_name":"Kai-Uwe Schmidt","raw_affiliation_strings":["Communications Laboratory, Dresden University of Technology, Dresden, Germany","Department of Mathematics, Simon Fraser University, Burnaby, BC, Canada"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Communications Laboratory, Dresden University of Technology, Dresden, Germany","institution_ids":["https://openalex.org/I78650965"]},{"raw_affiliation_string":"Department of Mathematics, Simon Fraser University, Burnaby, BC, Canada","institution_ids":["https://openalex.org/I18014758"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5072549968"],"corresponding_institution_ids":["https://openalex.org/I18014758","https://openalex.org/I78650965"],"apc_list":null,"apc_paid":null,"fwci":3.6555,"has_fulltext":false,"cited_by_count":98,"citation_normalized_percentile":{"value":0.93237066,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":94,"max":100},"biblio":{"volume":"55","issue":"4","first_page":"1824","last_page":"1832"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11130","display_name":"Coding theory and cryptography","score":0.9998999834060669,"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/T11130","display_name":"Coding theory and cryptography","score":0.9998999834060669,"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/T11873","display_name":"PAPR reduction in OFDM","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/T10125","display_name":"Advanced Wireless Communication Techniques","score":0.9994000196456909,"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","display_name":"Code (set theory)","score":0.501856803894043},{"id":"https://openalex.org/keywords/constant","display_name":"Constant (computer programming)","score":0.46136608719825745},{"id":"https://openalex.org/keywords/binary-number","display_name":"Binary number","score":0.4201469421386719},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.37526795268058777},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.36558231711387634},{"id":"https://openalex.org/keywords/discrete-mathematics","display_name":"Discrete mathematics","score":0.32064616680145264},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.28297150135040283},{"id":"https://openalex.org/keywords/programming-language","display_name":"Programming language","score":0.19285061955451965},{"id":"https://openalex.org/keywords/arithmetic","display_name":"Arithmetic","score":0.11370241641998291}],"concepts":[{"id":"https://openalex.org/C2776760102","wikidata":"https://www.wikidata.org/wiki/Q5139990","display_name":"Code (set theory)","level":3,"score":0.501856803894043},{"id":"https://openalex.org/C2777027219","wikidata":"https://www.wikidata.org/wiki/Q1284190","display_name":"Constant (computer programming)","level":2,"score":0.46136608719825745},{"id":"https://openalex.org/C48372109","wikidata":"https://www.wikidata.org/wiki/Q3913","display_name":"Binary number","level":2,"score":0.4201469421386719},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.37526795268058777},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.36558231711387634},{"id":"https://openalex.org/C118615104","wikidata":"https://www.wikidata.org/wiki/Q121416","display_name":"Discrete mathematics","level":1,"score":0.32064616680145264},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.28297150135040283},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.19285061955451965},{"id":"https://openalex.org/C94375191","wikidata":"https://www.wikidata.org/wiki/Q11205","display_name":"Arithmetic","level":1,"score":0.11370241641998291},{"id":"https://openalex.org/C177264268","wikidata":"https://www.wikidata.org/wiki/Q1514741","display_name":"Set (abstract data type)","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/tit.2009.2013041","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tit.2009.2013041","pdf_url":null,"source":{"id":"https://openalex.org/S4502562","display_name":"IEEE Transactions on Information Theory","issn_l":"0018-9448","issn":["0018-9448","1557-9654"],"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 Information Theory","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":26,"referenced_works":["https://openalex.org/W1569485855","https://openalex.org/W1587687098","https://openalex.org/W1606480398","https://openalex.org/W1983864333","https://openalex.org/W1992970500","https://openalex.org/W2017008783","https://openalex.org/W2032685643","https://openalex.org/W2038681062","https://openalex.org/W2052598727","https://openalex.org/W2090432705","https://openalex.org/W2091882973","https://openalex.org/W2100218642","https://openalex.org/W2105985720","https://openalex.org/W2107415712","https://openalex.org/W2117687189","https://openalex.org/W2132995205","https://openalex.org/W2133866430","https://openalex.org/W2136435457","https://openalex.org/W2142467107","https://openalex.org/W2145026135","https://openalex.org/W2154416717","https://openalex.org/W2160136043","https://openalex.org/W2162702830","https://openalex.org/W2320998793","https://openalex.org/W4233695615","https://openalex.org/W6675212014"],"related_works":["https://openalex.org/W2051487156","https://openalex.org/W2073681303","https://openalex.org/W2544423928","https://openalex.org/W2052122378","https://openalex.org/W2053286651","https://openalex.org/W2181743346","https://openalex.org/W2187401768","https://openalex.org/W2181413294","https://openalex.org/W2989452537","https://openalex.org/W4313731559"],"abstract_inverted_index":{"A":[0],"constant-amplitude":[1,28,47,106,113],"code":[2,5,58],"is":[3],"a":[4,57,61],"that":[6],"reduces":[7],"the":[8,21,64,68],"peak-to-average":[9],"power":[10],"ratio":[11],"(PAPR)":[12],"in":[13,87],"multicode":[14],"code-division":[15],"multiple":[16],"access":[17],"(MC-CDMA)":[18],"systems":[19],"to":[20,60,66,101,111],"favorable":[22],"value1.":[23],"In":[24],"this":[25],"paper,":[26],"quaternary":[27,95,105,112],"codes":[29,39,48,91,114],"(codes":[30],"overZ4)":[31],"of":[32,55,79,104],"length2mwith":[33],"error-correction":[34],"capabilities":[35],"are":[36,82,85,115],"studied.":[37],"These":[38],"exist":[40,50],"for":[41],"every":[42],"positive":[43],"integerm,":[44],"while":[45],"binary":[46,110],"cannot":[49],"ifmis":[51],"odd.":[52],"Every":[53],"word":[54],"such":[56,80],"corresponds":[59],"function":[62],"from":[63,109],"binarym-tuples":[65],"Z4having":[67],"bent":[69],"property,":[70],"i.e.,":[71],"its":[72],"Fourier":[73],"transform":[74],"has":[75],"magnitudes2m/2.":[76],"Several":[77],"constructions":[78],"functions":[81],"presented,":[83],"which":[84],"exploited":[86],"connection":[88],"with":[89],"algebraic":[90],"over":[92],"Z4(in":[93],"particular":[94],"Reed-Muller,":[96],"Kerdock,":[97],"and":[98],"Delsarte-Goethals":[99],"codes)":[100],"construct":[102],"families":[103],"codes.":[107],"Mappings":[108],"presented":[116],"as":[117],"well.":[118]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":5},{"year":2024,"cited_by_count":8},{"year":2023,"cited_by_count":5},{"year":2022,"cited_by_count":3},{"year":2021,"cited_by_count":7},{"year":2020,"cited_by_count":5},{"year":2019,"cited_by_count":7},{"year":2018,"cited_by_count":15},{"year":2017,"cited_by_count":3},{"year":2016,"cited_by_count":12},{"year":2015,"cited_by_count":6},{"year":2014,"cited_by_count":5},{"year":2013,"cited_by_count":9},{"year":2012,"cited_by_count":3}],"updated_date":"2026-07-29T09:40:50.615796","created_date":"2025-10-10T00:00:00"}