The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Dans cet article, nous présentons plusieurs techniques de filtrage de domaine de transformation unitaire basées sur la transformée de Karhaunen-Loeve (KLT) pour le rejet des interférences à bande étroite dans les systèmes de communication CDMA. La raison du choix du KLT est qu’il s’agit d’une transformation unitaire optimale dans le sens de regrouper l’énergie des interférences à bande étroite. En conséquence, après application de cette transformée, une petite partie du signal transformé serait perturbée par l'interférence à bande étroite et doit donc être mise à zéro. En raison de l'indisponibilité de la transformée optimale (KLT), plusieurs transformations sous-optimales sont présentées et leurs performances sont comparées aux méthodes de transformation conventionnelles bien connues telles que la transformée de Fourier discrète (DFT) et la transformée en cosinus discrète (DCT) en présence de à la fois les interférences auto-régressives (AR) et sinusoïdales à bande étroite. Nos résultats de simulation montrent que les méthodes de transformation proposées surpassent considérablement les méthodes conventionnelles.
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Paeiz AZMI, Masoumeh NASIRI-KENARI, "Narrow-Band Interference Suppression in CDMA Spread-Spectrum Communication Systems Based on Sub-Optimum Unitary Transforms" in IEICE TRANSACTIONS on Communications,
vol. E85-B, no. 1, pp. 239-246, January 2002, doi: .
Abstract: In this paper, we present several unitary transform-domain filtering techniques based on Karhaunen-Loeve Transform (KLT) for narrow-band interference rejection in CDMA communication systems. The reason for selecting the KLT is that it is an optimum unitary transform in the sense of packing the energy of the narrow-band interference. As a result after applying this transform, a small portion of the transformed signal would be interfered by the narrow-band interference, and thus must be set to zero. Due to unavailability of the optimum transform (KLT), several sub-optimum transforms are presented and their performances are compared with the well-known conventional transform methods such as Discrete Fourier Transform (DFT) and Discrete Cosine Transform (DCT) in the presence of both Auto Regressive (AR) and sinusoidal narrow-band interference. Our simulation results show that the proposed transform methods significantly outperform the conventional methods.
URL: https://global.ieice.org/en_transactions/communications/10.1587/e85-b_1_239/_p
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@ARTICLE{e85-b_1_239,
author={Paeiz AZMI, Masoumeh NASIRI-KENARI, },
journal={IEICE TRANSACTIONS on Communications},
title={Narrow-Band Interference Suppression in CDMA Spread-Spectrum Communication Systems Based on Sub-Optimum Unitary Transforms},
year={2002},
volume={E85-B},
number={1},
pages={239-246},
abstract={In this paper, we present several unitary transform-domain filtering techniques based on Karhaunen-Loeve Transform (KLT) for narrow-band interference rejection in CDMA communication systems. The reason for selecting the KLT is that it is an optimum unitary transform in the sense of packing the energy of the narrow-band interference. As a result after applying this transform, a small portion of the transformed signal would be interfered by the narrow-band interference, and thus must be set to zero. Due to unavailability of the optimum transform (KLT), several sub-optimum transforms are presented and their performances are compared with the well-known conventional transform methods such as Discrete Fourier Transform (DFT) and Discrete Cosine Transform (DCT) in the presence of both Auto Regressive (AR) and sinusoidal narrow-band interference. Our simulation results show that the proposed transform methods significantly outperform the conventional methods.},
keywords={},
doi={},
ISSN={},
month={January},}
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TY - JOUR
TI - Narrow-Band Interference Suppression in CDMA Spread-Spectrum Communication Systems Based on Sub-Optimum Unitary Transforms
T2 - IEICE TRANSACTIONS on Communications
SP - 239
EP - 246
AU - Paeiz AZMI
AU - Masoumeh NASIRI-KENARI
PY - 2002
DO -
JO - IEICE TRANSACTIONS on Communications
SN -
VL - E85-B
IS - 1
JA - IEICE TRANSACTIONS on Communications
Y1 - January 2002
AB - In this paper, we present several unitary transform-domain filtering techniques based on Karhaunen-Loeve Transform (KLT) for narrow-band interference rejection in CDMA communication systems. The reason for selecting the KLT is that it is an optimum unitary transform in the sense of packing the energy of the narrow-band interference. As a result after applying this transform, a small portion of the transformed signal would be interfered by the narrow-band interference, and thus must be set to zero. Due to unavailability of the optimum transform (KLT), several sub-optimum transforms are presented and their performances are compared with the well-known conventional transform methods such as Discrete Fourier Transform (DFT) and Discrete Cosine Transform (DCT) in the presence of both Auto Regressive (AR) and sinusoidal narrow-band interference. Our simulation results show that the proposed transform methods significantly outperform the conventional methods.
ER -