Efficient Generator/Correlator of GPC Sequences for QS-CDMA

Author

García, Enrique ; Ureña, Jesús ; García, Juan Jesús ; Pérez, M. Carmen ; Ruiz, Daniel

Author_Institution

Dept. of Electron., Univ. of Alcala, Madrid, Spain

Volume

16

Issue

10

fYear

2012

fDate

10/1/2012 12:00:00 AM

Firstpage

1676

Lastpage

1679

Abstract

This paper presents a novel efficient generator and correlator for Generalized Pairwise Complementary (GPC) sequences. The novel generator/correlator is constructed from an efficient generator/correlator for two uncorrelated Golay pairs of length 2^N · 10^M · 26^P. The proposed architecture permits to transmit both pairs in a quadrature modulation scheme (QAM or QPSK). The reduced number of operations needed in comparison with a straightforward correlator and the large Zero Correlation Zone (ZCZ) makes these sequences good candidates to be used in QS-CDMA (Quasi-Synchronous CDMA).

Keywords

code division multiple access; quadrature amplitude modulation; GPC sequences; QAM; QPSK; QS-CDMA; ZCZ; efficient generator-correlator; generalized pairwise complementary sequences; quadrature modulation scheme; quasisynchronous code division multiple access; straightforward correlator; uncorrelated Golay pairs; zero correlation zone; Correlation; Correlators; Delay; Generators; Modulation; Multiaccess communication; Real-time systems; GPC; Golay pairs; QS-CDMA; ZCZ; efficient correlator;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2012.091712.121240

Filename

6313573