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
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O OFDM de propagação de DFT filtrado universal convencional (UF-DFTs-OFDM) pode melhorar drasticamente a emissão fora de banda (OOBE) causada pela descontinuidade entre os símbolos nos DFTs-OFDM baseados em prefixo cíclico convencional (CP-DFTs -OFDM). No entanto, os UF-DFTs-OFDM degradam a qualidade da comunicação em um ambiente de desvanecimento multipercurso de longo atraso devido à ondulação no domínio da frequência derivada do longo tempo de transição do filtro passa-baixo (LPF) correspondente ao intervalo de guarda (GI). Neste artigo, propomos um UF-DFTs-OFDM aprimorado (eUF-DFTs-OFDM) que atinge OOBE significativamente baixo e alta qualidade de comunicação, mesmo em um ambiente de desvanecimento multipercurso de longo atraso. O eUF-DFTs-OFDM aplica um LPF de comprimento bastante curto em combinação com o preenchimento zero (ZP) ou o processo CP. Em seguida, as características do OOBE, relação de potência pico-média (PAPR) e taxa de erro de bloco (BLER) são avaliadas por simulação computacional com os parâmetros de uplink LTE. O resultado confirma que o eUF-DFTs-OFDM pode melhorar o OOBE em 22.5dB na borda do canal em comparação com o CP-DFTs-OFDM, e também melhorar o ES/N0 para alcançar BLER = 10-3 em cerca de 2.5dB para QPSK e 16QAM em comparação com UF-DFTs-OFDM. Para 64QAM, o eUF-DFTs-ODFDM proposto pode eliminar o piso de erro do UF-DFTs-OFDM. Estes resultados indicam que os eUF-DFTs-OFDM propostos podem reduzir significativamente o OOBE, mantendo o mesmo nível de qualidade de comunicação que os CP-DFTs-OFDM, mesmo em ambientes multipercursos de longo atraso.
Yuji MIZUTANI
Kyoto University
Hiroto KURIKI
Kyoto University
Yosuke KODAMA
Kyoto University
Keiichi MIZUTANI
Kyoto University
Takeshi MATSUMURA
Kyoto University
Hiroshi HARADA
Kyoto University
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Yuji MIZUTANI, Hiroto KURIKI, Yosuke KODAMA, Keiichi MIZUTANI, Takeshi MATSUMURA, Hiroshi HARADA, "Enhanced Universal Filtered-DFTs-OFDM for Long-Delay Multipath Environment" in IEICE TRANSACTIONS on Communications,
vol. E103-B, no. 4, pp. 467-475, April 2020, doi: 10.1587/transcom.2019EBP3044.
Abstract: The conventional universal filtered-DFT-spread-OFDM (UF-DFTs-OFDM) can drastically improve the out-of-band emission (OOBE) caused by the discontinuity between symbols in the conventional cyclic prefix-based DFTs-OFDM (CP-DFTs-OFDM). However, the UF-DFTs-OFDM degrades the communication quality in a long-delay multipath fading environment due to the frequency-domain ripple derived from the long transition time of the low pass filter (LPF) corresponding to the guard interval (GI). In this paper, we propose an enhanced UF-DFTs-OFDM (eUF-DFTs-OFDM) that achieves significantly low OOBE and high communication quality even in a long-delay multipath fading environment. The eUF-DFTs-OFDM applies an LPF with quite short length in combination with the zero padding (ZP) or the CP process. Then, the characteristics of the OOBE, peak-to-average power ratio (PAPR), and block error rate (BLER) are evaluated by computer simulation with the LTE uplink parameters. The result confirms that the eUF-DFTs-OFDM can improve the OOBE by 22.5dB at the channel-edge compared to the CP-DFTs-OFDM, and also improve the ES/N0 to achieve BLER =10-3 by about 2.5dB for QPSK and 16QAM compared to the UF-DFTs-OFDM. For 64QAM, the proposed eUF-DFTs-ODFDM can eliminate the error floor of the UF-DFTs-OFDM. These results indicate that the proposed eUF-DFTs-OFDM can significantly reduce the OOBE while maintaining the same level of communication quality as the CP-DFTs-OFDM even in long-delay multipath environment.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2019EBP3044/_p
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@ARTICLE{e103-b_4_467,
author={Yuji MIZUTANI, Hiroto KURIKI, Yosuke KODAMA, Keiichi MIZUTANI, Takeshi MATSUMURA, Hiroshi HARADA, },
journal={IEICE TRANSACTIONS on Communications},
title={Enhanced Universal Filtered-DFTs-OFDM for Long-Delay Multipath Environment},
year={2020},
volume={E103-B},
number={4},
pages={467-475},
abstract={The conventional universal filtered-DFT-spread-OFDM (UF-DFTs-OFDM) can drastically improve the out-of-band emission (OOBE) caused by the discontinuity between symbols in the conventional cyclic prefix-based DFTs-OFDM (CP-DFTs-OFDM). However, the UF-DFTs-OFDM degrades the communication quality in a long-delay multipath fading environment due to the frequency-domain ripple derived from the long transition time of the low pass filter (LPF) corresponding to the guard interval (GI). In this paper, we propose an enhanced UF-DFTs-OFDM (eUF-DFTs-OFDM) that achieves significantly low OOBE and high communication quality even in a long-delay multipath fading environment. The eUF-DFTs-OFDM applies an LPF with quite short length in combination with the zero padding (ZP) or the CP process. Then, the characteristics of the OOBE, peak-to-average power ratio (PAPR), and block error rate (BLER) are evaluated by computer simulation with the LTE uplink parameters. The result confirms that the eUF-DFTs-OFDM can improve the OOBE by 22.5dB at the channel-edge compared to the CP-DFTs-OFDM, and also improve the ES/N0 to achieve BLER =10-3 by about 2.5dB for QPSK and 16QAM compared to the UF-DFTs-OFDM. For 64QAM, the proposed eUF-DFTs-ODFDM can eliminate the error floor of the UF-DFTs-OFDM. These results indicate that the proposed eUF-DFTs-OFDM can significantly reduce the OOBE while maintaining the same level of communication quality as the CP-DFTs-OFDM even in long-delay multipath environment.},
keywords={},
doi={10.1587/transcom.2019EBP3044},
ISSN={1745-1345},
month={April},}
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TY - JOUR
TI - Enhanced Universal Filtered-DFTs-OFDM for Long-Delay Multipath Environment
T2 - IEICE TRANSACTIONS on Communications
SP - 467
EP - 475
AU - Yuji MIZUTANI
AU - Hiroto KURIKI
AU - Yosuke KODAMA
AU - Keiichi MIZUTANI
AU - Takeshi MATSUMURA
AU - Hiroshi HARADA
PY - 2020
DO - 10.1587/transcom.2019EBP3044
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E103-B
IS - 4
JA - IEICE TRANSACTIONS on Communications
Y1 - April 2020
AB - The conventional universal filtered-DFT-spread-OFDM (UF-DFTs-OFDM) can drastically improve the out-of-band emission (OOBE) caused by the discontinuity between symbols in the conventional cyclic prefix-based DFTs-OFDM (CP-DFTs-OFDM). However, the UF-DFTs-OFDM degrades the communication quality in a long-delay multipath fading environment due to the frequency-domain ripple derived from the long transition time of the low pass filter (LPF) corresponding to the guard interval (GI). In this paper, we propose an enhanced UF-DFTs-OFDM (eUF-DFTs-OFDM) that achieves significantly low OOBE and high communication quality even in a long-delay multipath fading environment. The eUF-DFTs-OFDM applies an LPF with quite short length in combination with the zero padding (ZP) or the CP process. Then, the characteristics of the OOBE, peak-to-average power ratio (PAPR), and block error rate (BLER) are evaluated by computer simulation with the LTE uplink parameters. The result confirms that the eUF-DFTs-OFDM can improve the OOBE by 22.5dB at the channel-edge compared to the CP-DFTs-OFDM, and also improve the ES/N0 to achieve BLER =10-3 by about 2.5dB for QPSK and 16QAM compared to the UF-DFTs-OFDM. For 64QAM, the proposed eUF-DFTs-ODFDM can eliminate the error floor of the UF-DFTs-OFDM. These results indicate that the proposed eUF-DFTs-OFDM can significantly reduce the OOBE while maintaining the same level of communication quality as the CP-DFTs-OFDM even in long-delay multipath environment.
ER -