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
Les communications sans fil ad hoc telles que les réseaux ad hoc ont attiré l'attention des chercheurs. Ils devraient devenir une technologie clé pour les réseaux « omniprésents » en raison de la capacité de configurer les liaisons sans fil par nœuds de manière autonome, sans aucune installation de contrôle centralisée. On s'attend à ce que les antennes réseau adaptatives (AAA) améliorent l'efficacité du réseau en tirant parti de leur capacité de formation de faisceau adaptative. Il convient toutefois de noter que l’AAA n’est pas tout-puissant. Sa capacité d'annulation des interférences est limitée par le degré de liberté (DOF) et la résolution angulaire en fonction du nombre d'antennes éléments. L’application de l’AAA sans s’occuper de ces problèmes peut dégrader l’efficacité du réseau. Considérons la communication sans fil ad hoc comme une application cible pour l'AAA, tirant parti de la capacité d'annulation des interférences de l'AAA. Le faible DOF et la résolution insuffisante constitueront des problèmes cruciaux par rapport à d'autres systèmes sans fil, car il n'existe aucune installation centralisée pour contrôler les nœuds afin d'éviter les interférences dans de tels systèmes. Un certain nombre d'interférences peuvent affecter un nœud depuis n'importe quelle direction d'arrivée (DOA) sans aucun contrôle temporel. Dans cet article, en nous concentrant sur les limitations de l'AAA appliquées aux communications ad hoc, nous proposons un nouveau schéma, Forward Interference Evidence (FIA), utilisant l'AAA pour les communications ad hoc afin d'éviter les problèmes causés par la limitation de la capacité AAA. Il permet aux nœuds d'éviter d'interférer avec d'autres nœuds, ce qui augmente le nombre de liaisons sans fil coexistantes. L'amélioration des performances des communications ad hoc en termes de nombre de liens coexistants est étudiée à travers des simulations informatiques.
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Tomofumi SAKAGUCHI, Yukihiro KAMIYA, Takeo FUJII, Yasuo SUZUKI, "Forward Interference Avoidance in Ad Hoc Communications Using Adaptive Array Antennas" in IEICE TRANSACTIONS on Communications,
vol. E91-B, no. 9, pp. 2940-2947, September 2008, doi: 10.1093/ietcom/e91-b.9.2940.
Abstract: Wireless ad hoc communications such as ad hoc networks have been attracting researchers' attention. They are expected to become a key technology for "ubiquitous" networking because of the ability to configure wireless links by nodes autonomously, without any centralized control facilities. Adaptive array antennas (AAA) have been expected to improve the network efficiency by taking advantage of its adaptive beamforming capability. However, it should be noted that AAA is not almighty. Its interference cancellation capability is limited by the degree-of-freedom (DOF) and the angular resolution as a function of the number of element antennas. Application of AAA without attending to these problems can degrade the efficiency of the network. Let us consider wireless ad hoc communication as a target application for AAA, taking advantage of AAA's interference cancellation capability. The low DOF and insufficient resolution will be crucial problems compared to other wireless systems, since there is no centralized facility to control the nodes to avoid interferences in such systems. A number of interferences might impinge on a node from any direction of arrival (DOA) without any timing control. In this paper, focusing on such limitations of AAA applied in ad hoc communications, we propose a new scheme, Forward Interference Avoidance (FIA), using AAA for ad hoc communications in order to avoid problems caused by the limitation of the AAA capability. It enables nodes to avoid interfering with other nodes so that it increases the number of co-existent wireless links. The performance improvement of ad hoc communications in terms of the number of co-existent links is investigated through computer simulations.
URL: https://global.ieice.org/en_transactions/communications/10.1093/ietcom/e91-b.9.2940/_p
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@ARTICLE{e91-b_9_2940,
author={Tomofumi SAKAGUCHI, Yukihiro KAMIYA, Takeo FUJII, Yasuo SUZUKI, },
journal={IEICE TRANSACTIONS on Communications},
title={Forward Interference Avoidance in Ad Hoc Communications Using Adaptive Array Antennas},
year={2008},
volume={E91-B},
number={9},
pages={2940-2947},
abstract={Wireless ad hoc communications such as ad hoc networks have been attracting researchers' attention. They are expected to become a key technology for "ubiquitous" networking because of the ability to configure wireless links by nodes autonomously, without any centralized control facilities. Adaptive array antennas (AAA) have been expected to improve the network efficiency by taking advantage of its adaptive beamforming capability. However, it should be noted that AAA is not almighty. Its interference cancellation capability is limited by the degree-of-freedom (DOF) and the angular resolution as a function of the number of element antennas. Application of AAA without attending to these problems can degrade the efficiency of the network. Let us consider wireless ad hoc communication as a target application for AAA, taking advantage of AAA's interference cancellation capability. The low DOF and insufficient resolution will be crucial problems compared to other wireless systems, since there is no centralized facility to control the nodes to avoid interferences in such systems. A number of interferences might impinge on a node from any direction of arrival (DOA) without any timing control. In this paper, focusing on such limitations of AAA applied in ad hoc communications, we propose a new scheme, Forward Interference Avoidance (FIA), using AAA for ad hoc communications in order to avoid problems caused by the limitation of the AAA capability. It enables nodes to avoid interfering with other nodes so that it increases the number of co-existent wireless links. The performance improvement of ad hoc communications in terms of the number of co-existent links is investigated through computer simulations.},
keywords={},
doi={10.1093/ietcom/e91-b.9.2940},
ISSN={1745-1345},
month={September},}
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TY - JOUR
TI - Forward Interference Avoidance in Ad Hoc Communications Using Adaptive Array Antennas
T2 - IEICE TRANSACTIONS on Communications
SP - 2940
EP - 2947
AU - Tomofumi SAKAGUCHI
AU - Yukihiro KAMIYA
AU - Takeo FUJII
AU - Yasuo SUZUKI
PY - 2008
DO - 10.1093/ietcom/e91-b.9.2940
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E91-B
IS - 9
JA - IEICE TRANSACTIONS on Communications
Y1 - September 2008
AB - Wireless ad hoc communications such as ad hoc networks have been attracting researchers' attention. They are expected to become a key technology for "ubiquitous" networking because of the ability to configure wireless links by nodes autonomously, without any centralized control facilities. Adaptive array antennas (AAA) have been expected to improve the network efficiency by taking advantage of its adaptive beamforming capability. However, it should be noted that AAA is not almighty. Its interference cancellation capability is limited by the degree-of-freedom (DOF) and the angular resolution as a function of the number of element antennas. Application of AAA without attending to these problems can degrade the efficiency of the network. Let us consider wireless ad hoc communication as a target application for AAA, taking advantage of AAA's interference cancellation capability. The low DOF and insufficient resolution will be crucial problems compared to other wireless systems, since there is no centralized facility to control the nodes to avoid interferences in such systems. A number of interferences might impinge on a node from any direction of arrival (DOA) without any timing control. In this paper, focusing on such limitations of AAA applied in ad hoc communications, we propose a new scheme, Forward Interference Avoidance (FIA), using AAA for ad hoc communications in order to avoid problems caused by the limitation of the AAA capability. It enables nodes to avoid interfering with other nodes so that it increases the number of co-existent wireless links. The performance improvement of ad hoc communications in terms of the number of co-existent links is investigated through computer simulations.
ER -