Repository logo
 
Publication

Generalized Chu polyphase sequences

2009-05Conference paper Restricted access
Simple item page
datacite.subject.sdg03:Saúde de Qualidade
datacite.subject.sdg10:Reduzir as Desigualdades
datacite.subject.sdg11:Cidades e Comunidades Sustentáveis
dc.contributor.authorPereira, J. S.
dc.contributor.authorSilva, H. J. A. da
dc.date.accessioned2025-06-06T10:08:25Z
dc.date.available2025-06-06T10:08:25Z
dc.date.issued2009-05
dc.descriptionArticle number 5158617 - 16th International Conference on Telecommunications, ICT 2009, 25 May 2009 through 27 May 2009 - Code 79805
dc.description.abstractThe perfect sequences are so ideal that all out-ofphase autocorrelation coefficients are zero. A method to generate a prime number N of perfect sequences with length N is presented. Moreover, these new sets have one more perfect sequence than Chu polyphase sets with the same maximum absolute value of periodic cross-correlation, and are slightly better for asynchronous direct sequence code division multiple access (DS-CDMA). The new sequences are more robust than Chu sequences when used with M-ary quadrature amplitude modulation (QAM). The reason for this improvement is that the new sequences are designed to be orthogonal to the M-ary QAM carriers. Other sequence transformations are also suggested and may be used to obtain many other perfect sequences with the same correlation properties. For example, the new sequences can be transformed into quadriphase sequences, also with good correlation properties.eng
dc.description.sponsorshipThis work was supported in part by the Portuguese Telecommunication Institute and the Polytechnic Institute of Leiria, Portugal.
dc.identifier.citationJ. S. Pereira and H. J. A. da Silva, "Generalized Chu polyphase sequences," 2009 International Conference on Telecommunications, Marrakech, Morroco, 2009, pp. 47-52, doi: https://doi.org/10.1109/ICTEL.2009.5158617.
dc.identifier.doi10.1109/ictel.2009.5158617
dc.identifier.isbn978-1-4244-2936-3
dc.identifier.urihttp://hdl.handle.net/10400.8/13152
dc.language.isoeng
dc.peerreviewedyes
dc.publisherIEEE Canada
dc.relation.hasversionhttps://ieeexplore.ieee.org/document/5158617
dc.relation.ispartof2009 International Conference on Telecommunications
dc.rights.uriN/A
dc.subjectCDMA
dc.subjectPerfect Sequences
dc.subjectPolyphase Sequences
dc.subjectChu Sequences
dc.titleGeneralized Chu polyphase sequenceseng
dc.typeconference paper
dspace.entity.typePublication
oaire.citation.conferenceDate2009-05
oaire.citation.conferencePlaceMarrakech, Morroco
oaire.citation.endPage52
oaire.citation.startPage47
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNamePereira
person.givenNameJoão
person.identifier.ciencia-idBD1E-268C-60A0
person.identifier.orcid0000-0002-4303-2876
person.identifier.scopus-author-id56269586400
relation.isAuthorOfPublicationd236a326-78d1-4be7-afca-0adcdcc4d4ae
relation.isAuthorOfPublication.latestForDiscoveryd236a326-78d1-4be7-afca-0adcdcc4d4ae

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
Generalized chu polyphase sequences.pdf
Size:
1.41 MB
Format:
Adobe Portable Document Format
Description:
The perfect sequences are so ideal that all out-ofphase autocorrelation coefficients are zero. A method to generate a prime number N of perfect sequences with length N is presented. Moreover, these new sets have one more perfect sequence than Chu polyphase sets with the same maximum absolute value of periodic cross-correlation, and are slightly better for asynchronous direct sequence code division multiple access (DS-CDMA). The new sequences are more robust than Chu sequences when used with M-ary quadrature amplitude modulation (QAM). The reason for this improvement is that the new sequences are designed to be orthogonal to the M-ary QAM carriers. Other sequence transformations are also suggested and may be used to obtain many other perfect sequences with the same correlation properties. For example, the new sequences can be transformed into quadriphase sequences, also with good correlation properties.
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.32 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

ESTG - Comunicações em conferências e congressos internacionais