Bounds on Aperiodic Autocorrelation and Crosscorrelation of Binary LCZ/ZCZ Sequences

Daiyuan PENG; Pingzhi FAN; Naoki SUEHIRO

doi:10.1093/ietfec/e88-a.12.3636

Bounds on Aperiodic Autocorrelation and Crosscorrelation of Binary LCZ/ZCZ Sequences

Daiyuan PENG, Pingzhi FAN, Naoki SUEHIRO

Full Text Views

0

Share
Cite this

Summary :

In order to eliminate the co-channel and multi-path interference of quasi-synchronous code division multiple access (QS-CDMA) systems, spreading sequences with low or zero correlation zone (LCZ or ZCZ) can be used. The significance of LCZ/ZCZ to QS-CDMA systems is that, even there are relative delays between the transmitted spreading sequences due to the inaccurate access synchronization and the multipath propagation, the orthogonality (or quasi-orthogonality) between the transmitted signals can still be maintained, as long as the relative delay does not exceed certain limit. In this paper, several lower bounds on the aperiodic autocorrelation and crosscorrelation of binary LCZ/ZCZ sequence set with respect to the family size, sequence length and the aperiodic low or zero correlation zone, are derived. The results show that the new bounds are tighter than previous bounds for the LCZ/ZCZ sequences.

Publication: IEICE TRANSACTIONS on Fundamentals Vol.E88-A No.12 pp.3636-3644

Publication Date: 2005/12/01

Publicized

Online ISSN

DOI: 10.1093/ietfec/e88-a.12.3636

Type of Manuscript: PAPER

Category: Spread Spectrum Technologies and Applications

Cite this

Copy

Daiyuan PENG, Pingzhi FAN, Naoki SUEHIRO, "Bounds on Aperiodic Autocorrelation and Crosscorrelation of Binary LCZ/ZCZ Sequences" in IEICE TRANSACTIONS on Fundamentals, vol. E88-A, no. 12, pp. 3636-3644, December 2005, doi: 10.1093/ietfec/e88-a.12.3636.
Abstract: In order to eliminate the co-channel and multi-path interference of quasi-synchronous code division multiple access (QS-CDMA) systems, spreading sequences with low or zero correlation zone (LCZ or ZCZ) can be used. The significance of LCZ/ZCZ to QS-CDMA systems is that, even there are relative delays between the transmitted spreading sequences due to the inaccurate access synchronization and the multipath propagation, the orthogonality (or quasi-orthogonality) between the transmitted signals can still be maintained, as long as the relative delay does not exceed certain limit. In this paper, several lower bounds on the aperiodic autocorrelation and crosscorrelation of binary LCZ/ZCZ sequence set with respect to the family size, sequence length and the aperiodic low or zero correlation zone, are derived. The results show that the new bounds are tighter than previous bounds for the LCZ/ZCZ sequences.
URL: https://globals.ieice.org/en_transactions/fundamentals/10.1093/ietfec/e88-a.12.3636/_p

Copy

@ARTICLE{e88-a_12_3636,
author={Daiyuan PENG, Pingzhi FAN, Naoki SUEHIRO, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Bounds on Aperiodic Autocorrelation and Crosscorrelation of Binary LCZ/ZCZ Sequences},
year={2005},
volume={E88-A},
number={12},
pages={3636-3644},
abstract={In order to eliminate the co-channel and multi-path interference of quasi-synchronous code division multiple access (QS-CDMA) systems, spreading sequences with low or zero correlation zone (LCZ or ZCZ) can be used. The significance of LCZ/ZCZ to QS-CDMA systems is that, even there are relative delays between the transmitted spreading sequences due to the inaccurate access synchronization and the multipath propagation, the orthogonality (or quasi-orthogonality) between the transmitted signals can still be maintained, as long as the relative delay does not exceed certain limit. In this paper, several lower bounds on the aperiodic autocorrelation and crosscorrelation of binary LCZ/ZCZ sequence set with respect to the family size, sequence length and the aperiodic low or zero correlation zone, are derived. The results show that the new bounds are tighter than previous bounds for the LCZ/ZCZ sequences.},
keywords={},
doi={10.1093/ietfec/e88-a.12.3636},
ISSN={},
month={December},}

Copy

TY - JOUR
TI - Bounds on Aperiodic Autocorrelation and Crosscorrelation of Binary LCZ/ZCZ Sequences
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 3636
EP - 3644
AU - Daiyuan PENG
AU - Pingzhi FAN
AU - Naoki SUEHIRO
PY - 2005
DO - 10.1093/ietfec/e88-a.12.3636
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E88-A
IS - 12
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - December 2005
AB - In order to eliminate the co-channel and multi-path interference of quasi-synchronous code division multiple access (QS-CDMA) systems, spreading sequences with low or zero correlation zone (LCZ or ZCZ) can be used. The significance of LCZ/ZCZ to QS-CDMA systems is that, even there are relative delays between the transmitted spreading sequences due to the inaccurate access synchronization and the multipath propagation, the orthogonality (or quasi-orthogonality) between the transmitted signals can still be maintained, as long as the relative delay does not exceed certain limit. In this paper, several lower bounds on the aperiodic autocorrelation and crosscorrelation of binary LCZ/ZCZ sequence set with respect to the family size, sequence length and the aperiodic low or zero correlation zone, are derived. The results show that the new bounds are tighter than previous bounds for the LCZ/ZCZ sequences.
ER -