Effect of Group Delay in RF BPF on Impulse Radio Systems

Seong-Sik MYOUNG; Bong-Su KWON; Young-Hwan KIM; Jong-Gwan YOOK

doi:10.1093/ietcom/e90-b.12.3514

Effect of Group Delay in RF BPF on Impulse Radio Systems

Seong-Sik MYOUNG, Bong-Su KWON, Young-Hwan KIM, Jong-Gwan YOOK

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This paper presents an analysis of the effects of RF filter characteristics on the system performance of an impulse radio. The impulse radio system transmits modulated pulses having very short time duration. Information can be extracted in the receiver side based on the cross-correlation between received and reference pulses. Accordingly, the pulse distortion due to in-band group delay variation can cause serious degradation in system performance. In general, RF band pass filters inevitably cause non-uniform group delays to the signal passing through the filter that are proportional to its skirt characteristic due to its resonance phenomenon. In this work, a small signal scattering parameter, S₂₁, which is a frequency domain parameter, and its Fourier transform are utilized to characterize the output pulse waveform under the condition that the input and output ports are matched. The output pulse waveform of the filter is predicted based on the convolution integral between the input pulse and filter transfer function, and the analysis result is compared with previously reported experimental result. The resulting bit error rate performances in a bi-phase modulation and a pulse position modulation based impulse radio system are also calculated. Moreover, improvement of system performance by the pulse shaping method, a potential solution for pulse waveform distortion, is analyzed.

Publication: IEICE TRANSACTIONS on Communications Vol.E90-B No.12 pp.3514-3522

Publication Date: 2007/12/01

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Online ISSN: 1745-1345

DOI: 10.1093/ietcom/e90-b.12.3514

Type of Manuscript: PAPER

Category: Devices/Circuits for Communications

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Seong-Sik MYOUNG, Bong-Su KWON, Young-Hwan KIM, Jong-Gwan YOOK, "Effect of Group Delay in RF BPF on Impulse Radio Systems" in IEICE TRANSACTIONS on Communications, vol. E90-B, no. 12, pp. 3514-3522, December 2007, doi: 10.1093/ietcom/e90-b.12.3514.
Abstract: This paper presents an analysis of the effects of RF filter characteristics on the system performance of an impulse radio. The impulse radio system transmits modulated pulses having very short time duration. Information can be extracted in the receiver side based on the cross-correlation between received and reference pulses. Accordingly, the pulse distortion due to in-band group delay variation can cause serious degradation in system performance. In general, RF band pass filters inevitably cause non-uniform group delays to the signal passing through the filter that are proportional to its skirt characteristic due to its resonance phenomenon. In this work, a small signal scattering parameter, S₂₁, which is a frequency domain parameter, and its Fourier transform are utilized to characterize the output pulse waveform under the condition that the input and output ports are matched. The output pulse waveform of the filter is predicted based on the convolution integral between the input pulse and filter transfer function, and the analysis result is compared with previously reported experimental result. The resulting bit error rate performances in a bi-phase modulation and a pulse position modulation based impulse radio system are also calculated. Moreover, improvement of system performance by the pulse shaping method, a potential solution for pulse waveform distortion, is analyzed.
URL: https://global.ieice.org/en_transactions/communications/10.1093/ietcom/e90-b.12.3514/_p

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@ARTICLE{e90-b_12_3514,
author={Seong-Sik MYOUNG, Bong-Su KWON, Young-Hwan KIM, Jong-Gwan YOOK, },
journal={IEICE TRANSACTIONS on Communications},
title={Effect of Group Delay in RF BPF on Impulse Radio Systems},
year={2007},
volume={E90-B},
number={12},
pages={3514-3522},
abstract={This paper presents an analysis of the effects of RF filter characteristics on the system performance of an impulse radio. The impulse radio system transmits modulated pulses having very short time duration. Information can be extracted in the receiver side based on the cross-correlation between received and reference pulses. Accordingly, the pulse distortion due to in-band group delay variation can cause serious degradation in system performance. In general, RF band pass filters inevitably cause non-uniform group delays to the signal passing through the filter that are proportional to its skirt characteristic due to its resonance phenomenon. In this work, a small signal scattering parameter, S₂₁, which is a frequency domain parameter, and its Fourier transform are utilized to characterize the output pulse waveform under the condition that the input and output ports are matched. The output pulse waveform of the filter is predicted based on the convolution integral between the input pulse and filter transfer function, and the analysis result is compared with previously reported experimental result. The resulting bit error rate performances in a bi-phase modulation and a pulse position modulation based impulse radio system are also calculated. Moreover, improvement of system performance by the pulse shaping method, a potential solution for pulse waveform distortion, is analyzed.},
keywords={},
doi={10.1093/ietcom/e90-b.12.3514},
ISSN={1745-1345},
month={December},}

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TY - JOUR
TI - Effect of Group Delay in RF BPF on Impulse Radio Systems
T2 - IEICE TRANSACTIONS on Communications
SP - 3514
EP - 3522
AU - Seong-Sik MYOUNG
AU - Bong-Su KWON
AU - Young-Hwan KIM
AU - Jong-Gwan YOOK
PY - 2007
DO - 10.1093/ietcom/e90-b.12.3514
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E90-B
IS - 12
JA - IEICE TRANSACTIONS on Communications
Y1 - December 2007
AB - This paper presents an analysis of the effects of RF filter characteristics on the system performance of an impulse radio. The impulse radio system transmits modulated pulses having very short time duration. Information can be extracted in the receiver side based on the cross-correlation between received and reference pulses. Accordingly, the pulse distortion due to in-band group delay variation can cause serious degradation in system performance. In general, RF band pass filters inevitably cause non-uniform group delays to the signal passing through the filter that are proportional to its skirt characteristic due to its resonance phenomenon. In this work, a small signal scattering parameter, S₂₁, which is a frequency domain parameter, and its Fourier transform are utilized to characterize the output pulse waveform under the condition that the input and output ports are matched. The output pulse waveform of the filter is predicted based on the convolution integral between the input pulse and filter transfer function, and the analysis result is compared with previously reported experimental result. The resulting bit error rate performances in a bi-phase modulation and a pulse position modulation based impulse radio system are also calculated. Moreover, improvement of system performance by the pulse shaping method, a potential solution for pulse waveform distortion, is analyzed.
ER -