Interference Reduction Using a Novel Pulse Set for UWB-CDMA Systems

Hiroki HARADA; Ryuji KOHNO

doi:10.1093/ietfec/e89-a.11.3050

Interference Reduction Using a Novel Pulse Set for UWB-CDMA Systems

Hiroki HARADA, Ryuji KOHNO

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A novel UWB system for a new indoor short distance radio-communication is examined. Various types of UWB systems have been proposed in the literature. Particularly direct sequence (DS) systems and time hopping (TH) systems are attractive due to low power consumption and a simple transceiver construction. In this paper, we consider to apply modulated and modified Hermite pulses (MMHP) for both DS-UWB and TH-UWB systems. Furthermore, MMHP are extended to a novel pulse set referred as limited bandwidth MMHP set in order to reduce various interferences. It is composed of pseudo-orthogonal pulses that have both good auto-correlation characteristics in all orders and low cross-correlation characteristics between different orders. The proposed pulse set also have some specific notches, which can be used to reduce narrow-band interference (NBI). Additionally, we propose a novel pulse shape hopping that employs the proposed MMHP set. Multi-user interference (MUI) and inter-symbol interference (ISI) can be reduced by such a pulse shape hopping scheme for the DS or TH UWB signal format. Simulation results show significant performance improvements by using the proposed UWB system.

Publication: IEICE TRANSACTIONS on Fundamentals Vol.E89-A No.11 pp.3050-3058

Publication Date: 2006/11/01

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Online ISSN: 1745-1337

DOI: 10.1093/ietfec/e89-a.11.3050

Type of Manuscript: Special Section PAPER (Special Section on Wide Band Systems)

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Hiroki HARADA, Ryuji KOHNO, "Interference Reduction Using a Novel Pulse Set for UWB-CDMA Systems" in IEICE TRANSACTIONS on Fundamentals, vol. E89-A, no. 11, pp. 3050-3058, November 2006, doi: 10.1093/ietfec/e89-a.11.3050.
Abstract: A novel UWB system for a new indoor short distance radio-communication is examined. Various types of UWB systems have been proposed in the literature. Particularly direct sequence (DS) systems and time hopping (TH) systems are attractive due to low power consumption and a simple transceiver construction. In this paper, we consider to apply modulated and modified Hermite pulses (MMHP) for both DS-UWB and TH-UWB systems. Furthermore, MMHP are extended to a novel pulse set referred as limited bandwidth MMHP set in order to reduce various interferences. It is composed of pseudo-orthogonal pulses that have both good auto-correlation characteristics in all orders and low cross-correlation characteristics between different orders. The proposed pulse set also have some specific notches, which can be used to reduce narrow-band interference (NBI). Additionally, we propose a novel pulse shape hopping that employs the proposed MMHP set. Multi-user interference (MUI) and inter-symbol interference (ISI) can be reduced by such a pulse shape hopping scheme for the DS or TH UWB signal format. Simulation results show significant performance improvements by using the proposed UWB system.
URL: https://globals.ieice.org/en_transactions/fundamentals/10.1093/ietfec/e89-a.11.3050/_p

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@ARTICLE{e89-a_11_3050,
author={Hiroki HARADA, Ryuji KOHNO, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Interference Reduction Using a Novel Pulse Set for UWB-CDMA Systems},
year={2006},
volume={E89-A},
number={11},
pages={3050-3058},
abstract={A novel UWB system for a new indoor short distance radio-communication is examined. Various types of UWB systems have been proposed in the literature. Particularly direct sequence (DS) systems and time hopping (TH) systems are attractive due to low power consumption and a simple transceiver construction. In this paper, we consider to apply modulated and modified Hermite pulses (MMHP) for both DS-UWB and TH-UWB systems. Furthermore, MMHP are extended to a novel pulse set referred as limited bandwidth MMHP set in order to reduce various interferences. It is composed of pseudo-orthogonal pulses that have both good auto-correlation characteristics in all orders and low cross-correlation characteristics between different orders. The proposed pulse set also have some specific notches, which can be used to reduce narrow-band interference (NBI). Additionally, we propose a novel pulse shape hopping that employs the proposed MMHP set. Multi-user interference (MUI) and inter-symbol interference (ISI) can be reduced by such a pulse shape hopping scheme for the DS or TH UWB signal format. Simulation results show significant performance improvements by using the proposed UWB system.},
keywords={},
doi={10.1093/ietfec/e89-a.11.3050},
ISSN={1745-1337},
month={November},}

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TY - JOUR
TI - Interference Reduction Using a Novel Pulse Set for UWB-CDMA Systems
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 3050
EP - 3058
AU - Hiroki HARADA
AU - Ryuji KOHNO
PY - 2006
DO - 10.1093/ietfec/e89-a.11.3050
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E89-A
IS - 11
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - November 2006
AB - A novel UWB system for a new indoor short distance radio-communication is examined. Various types of UWB systems have been proposed in the literature. Particularly direct sequence (DS) systems and time hopping (TH) systems are attractive due to low power consumption and a simple transceiver construction. In this paper, we consider to apply modulated and modified Hermite pulses (MMHP) for both DS-UWB and TH-UWB systems. Furthermore, MMHP are extended to a novel pulse set referred as limited bandwidth MMHP set in order to reduce various interferences. It is composed of pseudo-orthogonal pulses that have both good auto-correlation characteristics in all orders and low cross-correlation characteristics between different orders. The proposed pulse set also have some specific notches, which can be used to reduce narrow-band interference (NBI). Additionally, we propose a novel pulse shape hopping that employs the proposed MMHP set. Multi-user interference (MUI) and inter-symbol interference (ISI) can be reduced by such a pulse shape hopping scheme for the DS or TH UWB signal format. Simulation results show significant performance improvements by using the proposed UWB system.
ER -