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
Un schéma d'accès aux canaux basé sur l'OFDMA est proposé pour un accès dynamique au spectre afin d'utiliser efficacement le spectre de fréquences. Bien que le schéma basé sur OFDMA soit suffisamment flexible pour modifier la bande passante et le canal des signaux transmis, le signal OFDMA a un PAPR (rapport de puissance crête à moyenne) élevé. De plus, si le récepteur OFDMA n'utilise pas de filtre pour extraire les sous-porteuses avant le traitement FFT (Fast Fourier Transform), les sous-porteuses désignées subissent d'importantes interférences de la part des signaux des canaux adjacents lors du traitement FFT côté réception. Pour résoudre les problèmes tels que le PAPR et les interférences de canal adjacent rencontrés dans le schéma basé sur l'OFDMA, cet article propose un nouveau schéma d'accès aux canaux dynamique utilisant un banc de filtres FFT à chevauchement basé sur une modulation à porteuse unique. Il montre également les résultats de l'évaluation des performances du schéma proposé par simulation informatique.
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Motohiro TANABE, Masahiro UMEHIRA, Koichi ISHIHARA, Yasushi TAKATORI, "A Novel Dynamic Channel Access Scheme Using Overlap FFT Filter-Bank for Cognitive Radio" in IEICE TRANSACTIONS on Communications,
vol. E92-B, no. 12, pp. 3589-3596, December 2009, doi: 10.1587/transcom.E92.B.3589.
Abstract: An OFDMA based channel access scheme is proposed for dynamic spectrum access to utilize frequency spectrum efficiently. Though the OFDMA based scheme is flexible enough to change the bandwidth and channel of the transmitted signals, the OFDMA signal has large PAPR (Peak to Average Power Ratio). In addition, if the OFDMA receiver does not use a filter to extract sub-carriers before FFT (Fast Fourier Transform) processing, the designated sub-carriers suffer large interference from the adjacent channel signals in the FFT processing on the receiving side. To solve the problems such as PAPR and adjacent channel interference encountered in the OFDMA based scheme, this paper proposes a novel dynamic channel access scheme using overlap FFT filter-bank based on single carrier modulation. It also shows performance evaluation results of the proposed scheme by computer simulation.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E92.B.3589/_p
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@ARTICLE{e92-b_12_3589,
author={Motohiro TANABE, Masahiro UMEHIRA, Koichi ISHIHARA, Yasushi TAKATORI, },
journal={IEICE TRANSACTIONS on Communications},
title={A Novel Dynamic Channel Access Scheme Using Overlap FFT Filter-Bank for Cognitive Radio},
year={2009},
volume={E92-B},
number={12},
pages={3589-3596},
abstract={An OFDMA based channel access scheme is proposed for dynamic spectrum access to utilize frequency spectrum efficiently. Though the OFDMA based scheme is flexible enough to change the bandwidth and channel of the transmitted signals, the OFDMA signal has large PAPR (Peak to Average Power Ratio). In addition, if the OFDMA receiver does not use a filter to extract sub-carriers before FFT (Fast Fourier Transform) processing, the designated sub-carriers suffer large interference from the adjacent channel signals in the FFT processing on the receiving side. To solve the problems such as PAPR and adjacent channel interference encountered in the OFDMA based scheme, this paper proposes a novel dynamic channel access scheme using overlap FFT filter-bank based on single carrier modulation. It also shows performance evaluation results of the proposed scheme by computer simulation.},
keywords={},
doi={10.1587/transcom.E92.B.3589},
ISSN={1745-1345},
month={December},}
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TY - JOUR
TI - A Novel Dynamic Channel Access Scheme Using Overlap FFT Filter-Bank for Cognitive Radio
T2 - IEICE TRANSACTIONS on Communications
SP - 3589
EP - 3596
AU - Motohiro TANABE
AU - Masahiro UMEHIRA
AU - Koichi ISHIHARA
AU - Yasushi TAKATORI
PY - 2009
DO - 10.1587/transcom.E92.B.3589
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E92-B
IS - 12
JA - IEICE TRANSACTIONS on Communications
Y1 - December 2009
AB - An OFDMA based channel access scheme is proposed for dynamic spectrum access to utilize frequency spectrum efficiently. Though the OFDMA based scheme is flexible enough to change the bandwidth and channel of the transmitted signals, the OFDMA signal has large PAPR (Peak to Average Power Ratio). In addition, if the OFDMA receiver does not use a filter to extract sub-carriers before FFT (Fast Fourier Transform) processing, the designated sub-carriers suffer large interference from the adjacent channel signals in the FFT processing on the receiving side. To solve the problems such as PAPR and adjacent channel interference encountered in the OFDMA based scheme, this paper proposes a novel dynamic channel access scheme using overlap FFT filter-bank based on single carrier modulation. It also shows performance evaluation results of the proposed scheme by computer simulation.
ER -