Novel Narrowband Interference Rejection for an Asynchronous Spread Spectrum Wireless Modem Using a SAW Convolver
Summary :
An asynchronous spread spectrum (SS) wireless modem has been implemented using an efficient ZnO-SiO2-Si surface acoustic wave (SAW) convolver. The modem is based on a direct-sequence/frequency-shift-keying (DS/FSK) method for the modulation. The demodulation is carried out asynchronously utilizing the coherent correlation characteristics of the SAW convolver. In order to improve the narrowband interference rejection capability, we propose a new technique based on the reference signal control. A notched-reference-signal circuit and a self-convolution canceler are implemented in the SS modem for the reference signal control. It was found that the antijam capability for narrowband interference is at least -24dB of desired-to-undesired power ratio (D/U); the improvement of the antijam capability is 16dB up as compared with our previous SS modem.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E76-B No.8 pp.947-954
- Publication Date
- 1993/08/25
- Publicized
- Online ISSN
- DOI
- Type of Manuscript
- Special Section PAPER (Special Issue on Spread Spectrum Techniques and Applications)
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Hiroyuki NAKASE, Kazuo TSUBOUCHI, "Novel Narrowband Interference Rejection for an Asynchronous Spread Spectrum Wireless Modem Using a SAW Convolver" in IEICE TRANSACTIONS on Communications,
vol. E76-B, no. 8, pp. 947-954, August 1993, doi: .
Abstract: An asynchronous spread spectrum (SS) wireless modem has been implemented using an efficient ZnO-SiO2-Si surface acoustic wave (SAW) convolver. The modem is based on a direct-sequence/frequency-shift-keying (DS/FSK) method for the modulation. The demodulation is carried out asynchronously utilizing the coherent correlation characteristics of the SAW convolver. In order to improve the narrowband interference rejection capability, we propose a new technique based on the reference signal control. A notched-reference-signal circuit and a self-convolution canceler are implemented in the SS modem for the reference signal control. It was found that the antijam capability for narrowband interference is at least -24dB of desired-to-undesired power ratio (D/U); the improvement of the antijam capability is 16dB up as compared with our previous SS modem.
URL: https://global.ieice.org/en_transactions/communications/10.1587/e76-b_8_947/_p
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@ARTICLE{e76-b_8_947,
author={Hiroyuki NAKASE, Kazuo TSUBOUCHI, },
journal={IEICE TRANSACTIONS on Communications},
title={Novel Narrowband Interference Rejection for an Asynchronous Spread Spectrum Wireless Modem Using a SAW Convolver},
year={1993},
volume={E76-B},
number={8},
pages={947-954},
abstract={An asynchronous spread spectrum (SS) wireless modem has been implemented using an efficient ZnO-SiO2-Si surface acoustic wave (SAW) convolver. The modem is based on a direct-sequence/frequency-shift-keying (DS/FSK) method for the modulation. The demodulation is carried out asynchronously utilizing the coherent correlation characteristics of the SAW convolver. In order to improve the narrowband interference rejection capability, we propose a new technique based on the reference signal control. A notched-reference-signal circuit and a self-convolution canceler are implemented in the SS modem for the reference signal control. It was found that the antijam capability for narrowband interference is at least -24dB of desired-to-undesired power ratio (D/U); the improvement of the antijam capability is 16dB up as compared with our previous SS modem.},
keywords={},
doi={},
ISSN={},
month={August},}
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TY - JOUR
TI - Novel Narrowband Interference Rejection for an Asynchronous Spread Spectrum Wireless Modem Using a SAW Convolver
T2 - IEICE TRANSACTIONS on Communications
SP - 947
EP - 954
AU - Hiroyuki NAKASE
AU - Kazuo TSUBOUCHI
PY - 1993
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E76-B
IS - 8
JA - IEICE TRANSACTIONS on Communications
Y1 - August 1993
AB - An asynchronous spread spectrum (SS) wireless modem has been implemented using an efficient ZnO-SiO2-Si surface acoustic wave (SAW) convolver. The modem is based on a direct-sequence/frequency-shift-keying (DS/FSK) method for the modulation. The demodulation is carried out asynchronously utilizing the coherent correlation characteristics of the SAW convolver. In order to improve the narrowband interference rejection capability, we propose a new technique based on the reference signal control. A notched-reference-signal circuit and a self-convolution canceler are implemented in the SS modem for the reference signal control. It was found that the antijam capability for narrowband interference is at least -24dB of desired-to-undesired power ratio (D/U); the improvement of the antijam capability is 16dB up as compared with our previous SS modem.
ER -
English
