Autocorrelation Properties of Unified Complex Hadamard Transform Sequences
Summary :
The UCHT (Unified Complex Hadamard Transform) has been proposed as a new family of spreading sequences for DS-SSMA systems recently. In this Letter, the periodic autocorrelation (PAC) properties of the Unified Complex Hadamard Transform (UCHT) sequences are analyzed. Upper bounds for the out-of-phase PAC are derived for two groups of the UCHT sequences, namely the HSP-UCHT and the NHSP-UCHT sequences (the later is a more general representation of the well-known Walsh-Hadamard (WH) sequences). A comparison of the two bounds is performed. It turns out that the HSP-UCHT sequences have a lower upper bound for the out-of-phase PAC. This makes the HSP-UCHT sequences more effective than the WH sequences in combating multipath effect for DS-SSMA systems.
- Publication
- IEICE TRANSACTIONS on Fundamentals Vol.E85-A No.10 pp.2280-2282
- Publication Date
- 2002/10/01
- Publicized
- Online ISSN
- DOI
- Type of Manuscript
- Special Section LETTER (Special Section on Information Theory and Its Applications)
- Category
- Spread Spectrum Technologies and Applications
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Wee SER, Susanto RAHARDJA, Zinan LIN, "Autocorrelation Properties of Unified Complex Hadamard Transform Sequences" in IEICE TRANSACTIONS on Fundamentals,
vol. E85-A, no. 10, pp. 2280-2282, October 2002, doi: .
Abstract: The UCHT (Unified Complex Hadamard Transform) has been proposed as a new family of spreading sequences for DS-SSMA systems recently. In this Letter, the periodic autocorrelation (PAC) properties of the Unified Complex Hadamard Transform (UCHT) sequences are analyzed. Upper bounds for the out-of-phase PAC are derived for two groups of the UCHT sequences, namely the HSP-UCHT and the NHSP-UCHT sequences (the later is a more general representation of the well-known Walsh-Hadamard (WH) sequences). A comparison of the two bounds is performed. It turns out that the HSP-UCHT sequences have a lower upper bound for the out-of-phase PAC. This makes the HSP-UCHT sequences more effective than the WH sequences in combating multipath effect for DS-SSMA systems.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/e85-a_10_2280/_p
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@ARTICLE{e85-a_10_2280,
author={Wee SER, Susanto RAHARDJA, Zinan LIN, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Autocorrelation Properties of Unified Complex Hadamard Transform Sequences},
year={2002},
volume={E85-A},
number={10},
pages={2280-2282},
abstract={The UCHT (Unified Complex Hadamard Transform) has been proposed as a new family of spreading sequences for DS-SSMA systems recently. In this Letter, the periodic autocorrelation (PAC) properties of the Unified Complex Hadamard Transform (UCHT) sequences are analyzed. Upper bounds for the out-of-phase PAC are derived for two groups of the UCHT sequences, namely the HSP-UCHT and the NHSP-UCHT sequences (the later is a more general representation of the well-known Walsh-Hadamard (WH) sequences). A comparison of the two bounds is performed. It turns out that the HSP-UCHT sequences have a lower upper bound for the out-of-phase PAC. This makes the HSP-UCHT sequences more effective than the WH sequences in combating multipath effect for DS-SSMA systems.},
keywords={},
doi={},
ISSN={},
month={October},}
Copy
TY - JOUR
TI - Autocorrelation Properties of Unified Complex Hadamard Transform Sequences
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 2280
EP - 2282
AU - Wee SER
AU - Susanto RAHARDJA
AU - Zinan LIN
PY - 2002
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E85-A
IS - 10
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - October 2002
AB - The UCHT (Unified Complex Hadamard Transform) has been proposed as a new family of spreading sequences for DS-SSMA systems recently. In this Letter, the periodic autocorrelation (PAC) properties of the Unified Complex Hadamard Transform (UCHT) sequences are analyzed. Upper bounds for the out-of-phase PAC are derived for two groups of the UCHT sequences, namely the HSP-UCHT and the NHSP-UCHT sequences (the later is a more general representation of the well-known Walsh-Hadamard (WH) sequences). A comparison of the two bounds is performed. It turns out that the HSP-UCHT sequences have a lower upper bound for the out-of-phase PAC. This makes the HSP-UCHT sequences more effective than the WH sequences in combating multipath effect for DS-SSMA systems.
ER -
English
