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".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Skim akses saluran berasaskan OFDMA dicadangkan untuk akses spektrum dinamik untuk menggunakan spektrum frekuensi dengan cekap. Walaupun skim berasaskan OFDMA cukup fleksibel untuk menukar lebar jalur dan saluran isyarat yang dihantar, isyarat OFDMA mempunyai PAPR yang besar (Nisbah Kuasa Puncak kepada Purata). Di samping itu, jika penerima OFDMA tidak menggunakan penapis untuk mengekstrak sub-pembawa sebelum pemprosesan FFT (Fast Fourier Transform), sub-pembawa yang ditetapkan mengalami gangguan besar daripada isyarat saluran bersebelahan dalam pemprosesan FFT pada bahagian penerima. Untuk menyelesaikan masalah seperti PAPR dan gangguan saluran bersebelahan yang dihadapi dalam skim berasaskan OFDMA, kertas kerja ini mencadangkan skim capaian saluran dinamik baru menggunakan bank penapis FFT bertindih berdasarkan modulasi pembawa tunggal. Ia juga menunjukkan keputusan penilaian prestasi skim yang dicadangkan melalui simulasi komputer.
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Salinan
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
Salinan
@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},}
Salinan
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 -