{"id":"https://openalex.org/W2096653133","doi":"https://doi.org/10.1109/ictel.2009.5158617","title":"Generalized Chu polyphase sequences","display_name":"Generalized Chu polyphase sequences","publication_year":2009,"publication_date":"2009-01-01","ids":{"openalex":"https://openalex.org/W2096653133","doi":"https://doi.org/10.1109/ictel.2009.5158617","mag":"2096653133"},"language":"en","primary_location":{"id":"doi:10.1109/ictel.2009.5158617","is_oa":false,"landing_page_url":"https://doi.org/10.1109/ictel.2009.5158617","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2009 International Conference on Telecommunications","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/A5066129698","display_name":"J. S. Pereira","orcid":"https://orcid.org/0000-0002-4303-2876"},"institutions":[{"id":"https://openalex.org/I4210120471","display_name":"Instituto de Telecomunica\u00e7\u00f5es","ror":"https://ror.org/02ht4fk33","country_code":"PT","type":"nonprofit","lineage":["https://openalex.org/I4210120471"]},{"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"]},{"id":"https://openalex.org/I169427155","display_name":"Instituto Polit\u00e9cnico de Leiria","ror":"https://ror.org/010dvvh94","country_code":"PT","type":"education","lineage":["https://openalex.org/I169427155"]}],"countries":["PT"],"is_corresponding":true,"raw_author_name":"J. S. Pereira","raw_affiliation_strings":["ESTG/Campus2 do Instituto Polit\u00e9cnico de Leiria, Leiria, Portugal","Instituto de Telecomunica\u00e7\u00f5es, Universidade de Coimbra Polo II, Coimbra, Portugal"],"affiliations":[{"raw_affiliation_string":"ESTG/Campus2 do Instituto Polit\u00e9cnico de Leiria, Leiria, Portugal","institution_ids":["https://openalex.org/I169427155"]},{"raw_affiliation_string":"Instituto de Telecomunica\u00e7\u00f5es, Universidade de Coimbra Polo II, Coimbra, Portugal","institution_ids":["https://openalex.org/I4210120471","https://openalex.org/I76903346"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5100674067","display_name":"Henrique Silva","orcid":"https://orcid.org/0000-0003-2866-2746"},"institutions":[{"id":"https://openalex.org/I4210120471","display_name":"Instituto de Telecomunica\u00e7\u00f5es","ror":"https://ror.org/02ht4fk33","country_code":"PT","type":"nonprofit","lineage":["https://openalex.org/I4210120471"]},{"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":"H. J. A. da Silva","raw_affiliation_strings":["Instituto de Telecomunica\u00e7\u00f5es and Departamento de Engenharia Electrot\u00e9cnica e de Computadores da Faculdade de Ci\u00eancias e Tecnologia, Universidade de Coimbra Polo II, Coimbra, Portugal"],"affiliations":[{"raw_affiliation_string":"Instituto de Telecomunica\u00e7\u00f5es and Departamento de Engenharia Electrot\u00e9cnica e de Computadores da Faculdade de Ci\u00eancias e Tecnologia, Universidade de Coimbra Polo II, Coimbra, Portugal","institution_ids":["https://openalex.org/I4210120471","https://openalex.org/I76903346"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5066129698"],"corresponding_institution_ids":["https://openalex.org/I169427155","https://openalex.org/I4210120471","https://openalex.org/I76903346"],"apc_list":null,"apc_paid":null,"fwci":2.3926,"has_fulltext":false,"cited_by_count":12,"citation_normalized_percentile":{"value":0.89026847,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":99},"biblio":{"volume":"30","issue":null,"first_page":"47","last_page":"52"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10125","display_name":"Advanced Wireless Communication Techniques","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/T10125","display_name":"Advanced Wireless Communication Techniques","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/T10575","display_name":"Wireless Communication Networks Research","score":1.0,"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/T11873","display_name":"PAPR reduction in OFDM","score":0.9991000294685364,"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/polyphase-system","display_name":"Polyphase system","score":0.9163808822631836},{"id":"https://openalex.org/keywords/complementary-sequences","display_name":"Complementary sequences","score":0.802676260471344},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.6819121241569519},{"id":"https://openalex.org/keywords/sequence","display_name":"Sequence (biology)","score":0.5841627717018127},{"id":"https://openalex.org/keywords/qam","display_name":"QAM","score":0.5790603756904602},{"id":"https://openalex.org/keywords/code-division-multiple-access","display_name":"Code division multiple access","score":0.5711516737937927},{"id":"https://openalex.org/keywords/autocorrelation","display_name":"Autocorrelation","score":0.5616106986999512},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.49087029695510864},{"id":"https://openalex.org/keywords/quadrature-amplitude-modulation","display_name":"Quadrature amplitude modulation","score":0.46413156390190125},{"id":"https://openalex.org/keywords/chinese-remainder-theorem","display_name":"Chinese remainder theorem","score":0.42903101444244385},{"id":"https://openalex.org/keywords/discrete-mathematics","display_name":"Discrete mathematics","score":0.41500720381736755},{"id":"https://openalex.org/keywords/combinatorics","display_name":"Combinatorics","score":0.3208767771720886},{"id":"https://openalex.org/keywords/topology","display_name":"Topology (electrical circuits)","score":0.3202335238456726},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.21423208713531494},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.21397069096565247},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.15459996461868286},{"id":"https://openalex.org/keywords/bit-error-rate","display_name":"Bit error rate","score":0.10810631513595581},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.09446179866790771}],"concepts":[{"id":"https://openalex.org/C96157337","wikidata":"https://www.wikidata.org/wiki/Q391639","display_name":"Polyphase system","level":2,"score":0.9163808822631836},{"id":"https://openalex.org/C32795469","wikidata":"https://www.wikidata.org/wiki/Q5156430","display_name":"Complementary sequences","level":2,"score":0.802676260471344},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.6819121241569519},{"id":"https://openalex.org/C2778112365","wikidata":"https://www.wikidata.org/wiki/Q3511065","display_name":"Sequence (biology)","level":2,"score":0.5841627717018127},{"id":"https://openalex.org/C59030546","wikidata":"https://www.wikidata.org/wiki/Q7265371","display_name":"QAM","level":5,"score":0.5790603756904602},{"id":"https://openalex.org/C47696715","wikidata":"https://www.wikidata.org/wiki/Q233394","display_name":"Code division multiple access","level":2,"score":0.5711516737937927},{"id":"https://openalex.org/C5297727","wikidata":"https://www.wikidata.org/wiki/Q786970","display_name":"Autocorrelation","level":2,"score":0.5616106986999512},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.49087029695510864},{"id":"https://openalex.org/C32409245","wikidata":"https://www.wikidata.org/wiki/Q749753","display_name":"Quadrature amplitude modulation","level":4,"score":0.46413156390190125},{"id":"https://openalex.org/C151635116","wikidata":"https://www.wikidata.org/wiki/Q193878","display_name":"Chinese remainder theorem","level":2,"score":0.42903101444244385},{"id":"https://openalex.org/C118615104","wikidata":"https://www.wikidata.org/wiki/Q121416","display_name":"Discrete mathematics","level":1,"score":0.41500720381736755},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.3208767771720886},{"id":"https://openalex.org/C184720557","wikidata":"https://www.wikidata.org/wiki/Q7825049","display_name":"Topology (electrical circuits)","level":2,"score":0.3202335238456726},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.21423208713531494},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.21397069096565247},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.15459996461868286},{"id":"https://openalex.org/C56296756","wikidata":"https://www.wikidata.org/wiki/Q840922","display_name":"Bit error rate","level":3,"score":0.10810631513595581},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.09446179866790771},{"id":"https://openalex.org/C57273362","wikidata":"https://www.wikidata.org/wiki/Q576722","display_name":"Decoding methods","level":2,"score":0.0},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.0},{"id":"https://openalex.org/C54355233","wikidata":"https://www.wikidata.org/wiki/Q7162","display_name":"Genetics","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/ictel.2009.5158617","is_oa":false,"landing_page_url":"https://doi.org/10.1109/ictel.2009.5158617","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2009 International Conference on Telecommunications","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":19,"referenced_works":["https://openalex.org/W1522045078","https://openalex.org/W2000096140","https://openalex.org/W2048656174","https://openalex.org/W2066530892","https://openalex.org/W2067096554","https://openalex.org/W2069690084","https://openalex.org/W2109128468","https://openalex.org/W2118054587","https://openalex.org/W2121402286","https://openalex.org/W2130080747","https://openalex.org/W2138548210","https://openalex.org/W2155416100","https://openalex.org/W2165354075","https://openalex.org/W2169756076","https://openalex.org/W2401237596","https://openalex.org/W2493309683","https://openalex.org/W4233622498","https://openalex.org/W4285719527","https://openalex.org/W6820230412"],"related_works":["https://openalex.org/W1969707263","https://openalex.org/W2014546418","https://openalex.org/W3022426770","https://openalex.org/W987050886","https://openalex.org/W2147334234","https://openalex.org/W2159438609","https://openalex.org/W2900995485","https://openalex.org/W1985553952","https://openalex.org/W3196902411","https://openalex.org/W2588528394"],"abstract_inverted_index":{"The":[0,64,81],"perfect":[1,22,36,115],"sequences":[2,23,66,72,90,116,126],"are":[3,11,52,67,91,104],"so":[4],"ideal":[5],"that":[6,87],"all":[7],"out-of-phase":[8],"autocorrelation":[9],"coefficients":[10],"zero.":[12],"A":[13],"method":[14],"to":[15,93,96,111],"generate":[16],"a":[17],"prime":[18],"number":[19],"N":[20,26],"of":[21,48],"with":[24,42,75,117,134],"length":[25],"is":[27,86],"presented.":[28],"Moreover,":[29],"these":[30],"new":[31,65,89,125],"sets":[32,41],"have":[33],"one":[34],"more":[35,68],"sequence":[37,58,102],"than":[38,70],"Chu":[39,71],"polyphase":[40],"the":[43,88,97,118,124],"same":[44,119],"maximum":[45],"absolute":[46],"value":[47],"periodic":[49],"cross-correlation,":[50],"and":[51,107],"slightly":[53],"better":[54],"for":[55,83],"asynchronous":[56],"direct":[57],"code":[59],"division":[60],"multiple":[61],"access":[62],"(DS-CDMA).":[63],"robust":[69],"when":[73],"used":[74,110],"M-ary":[76,98],"quadrature":[77],"amplitude":[78],"modulation":[79],"(QAM).":[80],"reason":[82],"this":[84],"improvement":[85],"designed":[92],"be":[94,109,128],"orthogonal":[95],"QAM":[99],"carriers.":[100],"Other":[101],"transformations":[103],"also":[105,133],"suggested":[106],"may":[108],"obtain":[112],"many":[113],"other":[114],"correlation":[120,136],"properties.":[121,137],"For":[122],"example,":[123],"can":[127],"transformed":[129],"into":[130],"quadriphase":[131],"sequences,":[132],"good":[135]},"counts_by_year":[{"year":2019,"cited_by_count":1},{"year":2018,"cited_by_count":1},{"year":2017,"cited_by_count":1},{"year":2014,"cited_by_count":1},{"year":2012,"cited_by_count":6}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
