DocumentCode :
3543585
Title :
Analysis of different Pseudo-Random and orthogonal spreading sequences in DS-CDMA
Author :
Ziani, Ahmed ; Medouri, Abdellatif
Author_Institution :
Inf. Syst. & Telecommun. Lab., Abdelmalek Essaadi Univ., Tetuan, Morocco
fYear :
2012
fDate :
10-12 May 2012
Firstpage :
558
Lastpage :
564
Abstract :
Pseudo-Random or pseudo-noise and Orthogonal Spreading sequences are widely used in the Wideband Code Division Multiple Access (WCDMA) systems using Rake receiver. This paper shows the theoretical aspect for direct sequences DS-CDMA systems and reviews the main characteristics of the maximal length, Gold, barker and Kasami sequences, also the variable and fixed-length orthogonal codes are discussed. Finally, comparisons between these methods is given by using autocorrelation, cross-correlation functions, The mean square aperiodic auto-correlation (MSAAC), the mean square aperiodic cross-correlation (MSACC) measures and the Merit factor (MF).
Keywords :
code division multiple access; mean square error methods; orthogonal codes; radio receivers; random sequences; spread spectrum communication; DS-CDMA; Kasami sequence; Rake receiver; WCDMA system; barker sequence; direct sequence systems; fixed-length orthogonal codes; gold sequence; maximal length sequence; mean square aperiodic auto-correlation; mean square aperiodic cross-correlation; merit factor; orthogonal spreading sequences; pseudonoise spreading sequences; pseudorandom spreading sequences; variable orthogonal codes; wideband code division multiple access system; Bandwidth; Correlation; Error correction; Error correction codes; Generators; Gold; Multiaccess communication; DS-CDMA; WCDMA; auto-correlation; cross-correlation; merit factor; orthogonal codes; pseudo-noise codes;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Multimedia Computing and Systems (ICMCS), 2012 International Conference on
Conference_Location :
Tangier
Print_ISBN :
978-1-4673-1518-0
Type :
conf
DOI :
10.1109/ICMCS.2012.6320321
Filename :
6320321
Link To Document :
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