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
홈 네트워크에서 고속 통신을 구현하기 위한 방법으로 PLC(Power Line Communication) 기술이 알려져 있다. PLC의 문제점은 누출 방사선이 기존 시스템을 방해한다는 것입니다. PLC 시스템에서 OFDM을 사용하는 경우, 신호가 엄격하게 대역 제한되지 않기 때문에 기존 시스템의 주파수 대역에 해당하는 부반송파를 전혀 사용하지 않더라도 누출 복사가 충분히 줄어들지 않습니다. 이 문제를 해결하려면 각 부반송파가 대역 제한되어야 합니다. 본 논문에서는 OQAM 기반 다중 캐리어 전송(OQAM-MCT)을 각 부반송파가 개별적으로 대역 제한되는 고속 PLC 시스템에 적용합니다. 또한 OQAM-MCT 시스템에서 주파수 오프셋 추정, 심볼 타이밍 검출 및 채널 추정에 적합한 파일럿-심볼 시퀀스를 제안합니다. 이 방법에서 파일럿 신호 시퀀스는 동일한 데이터 심볼의 반복된 계열로 구성됩니다. 이 방법을 사용하면 파일럿 시퀀스는 대략 OFDM 시퀀스와 동일해 지므로 기존 OFDM 파일럿 지원 방법은 OQAM-MCT 시스템에도 적용 가능합니다. 컴퓨터 시뮬레이션 결과는 OQAM-MCT 시스템이 PLC 채널에서 우수한 전송 속도 성능과 낮은 대역 외 복사를 모두 달성한다는 것을 보여줍니다. 또한, 제안된 파일럿 시퀀스는 의사잡음 시퀀스를 사용한 경우에 비해 주파수 오프셋 추정, 심볼 타이밍 검출 및 채널 추정 성능이 향상됨을 보였다.
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부
Naohiro KAWABATA, Hisao KOGA, Osamu MUTA, Yoshihiko AKAIWA, "A High-Speed Power-Line Communication System with Band-Limited OQAM Based Multi-Carrier Transmission" in IEICE TRANSACTIONS on Communications,
vol. E92-B, no. 2, pp. 473-482, February 2009, doi: 10.1587/transcom.E92.B.473.
Abstract: As a method to realize a high-speed communication in the home network, the power-line communication (PLC) technique is known. A problem of PLC is that leakage radiation interferes with existing systems. When OFDM is used in a PLC system, the leakage radiation is not sufficiently reduced, even if the subcarriers corresponding to the frequency-band of the existing system are never used, because the signal is not strictly band-limited. To solve this problem, each subcarrier must be band-limited. In this paper, we apply the OQAM based multi-carrier transmission (OQAM-MCT) to a high-speed PLC system, where each subcarrier is individually band-limited. We also propose a pilot-symbol sequence suitable for frequency offset estimation, symbol-timing detection and channel estimation in the OQAM-MCT system. In this method, the pilot signal-sequence consists of a repeated series of the same data symbol. With this method, the pilot sequence approximately becomes equivalent to OFDM sequence and therefore existing pilot-assisted methods for OFDM are also applicable to OQAM-MCT system. Computer simulation results show that the OQAM-MCT system achieves both good transmission rate performance and low out-of-band radiation in PLC channels. It is also shown that the proposed pilot-sequence improves frequency offset estimation, symbol-timing detection and channel estimation performance as compared with the case of using pseudo-noise sequence.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E92.B.473/_p
부
@ARTICLE{e92-b_2_473,
author={Naohiro KAWABATA, Hisao KOGA, Osamu MUTA, Yoshihiko AKAIWA, },
journal={IEICE TRANSACTIONS on Communications},
title={A High-Speed Power-Line Communication System with Band-Limited OQAM Based Multi-Carrier Transmission},
year={2009},
volume={E92-B},
number={2},
pages={473-482},
abstract={As a method to realize a high-speed communication in the home network, the power-line communication (PLC) technique is known. A problem of PLC is that leakage radiation interferes with existing systems. When OFDM is used in a PLC system, the leakage radiation is not sufficiently reduced, even if the subcarriers corresponding to the frequency-band of the existing system are never used, because the signal is not strictly band-limited. To solve this problem, each subcarrier must be band-limited. In this paper, we apply the OQAM based multi-carrier transmission (OQAM-MCT) to a high-speed PLC system, where each subcarrier is individually band-limited. We also propose a pilot-symbol sequence suitable for frequency offset estimation, symbol-timing detection and channel estimation in the OQAM-MCT system. In this method, the pilot signal-sequence consists of a repeated series of the same data symbol. With this method, the pilot sequence approximately becomes equivalent to OFDM sequence and therefore existing pilot-assisted methods for OFDM are also applicable to OQAM-MCT system. Computer simulation results show that the OQAM-MCT system achieves both good transmission rate performance and low out-of-band radiation in PLC channels. It is also shown that the proposed pilot-sequence improves frequency offset estimation, symbol-timing detection and channel estimation performance as compared with the case of using pseudo-noise sequence.},
keywords={},
doi={10.1587/transcom.E92.B.473},
ISSN={1745-1345},
month={February},}
부
TY - JOUR
TI - A High-Speed Power-Line Communication System with Band-Limited OQAM Based Multi-Carrier Transmission
T2 - IEICE TRANSACTIONS on Communications
SP - 473
EP - 482
AU - Naohiro KAWABATA
AU - Hisao KOGA
AU - Osamu MUTA
AU - Yoshihiko AKAIWA
PY - 2009
DO - 10.1587/transcom.E92.B.473
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E92-B
IS - 2
JA - IEICE TRANSACTIONS on Communications
Y1 - February 2009
AB - As a method to realize a high-speed communication in the home network, the power-line communication (PLC) technique is known. A problem of PLC is that leakage radiation interferes with existing systems. When OFDM is used in a PLC system, the leakage radiation is not sufficiently reduced, even if the subcarriers corresponding to the frequency-band of the existing system are never used, because the signal is not strictly band-limited. To solve this problem, each subcarrier must be band-limited. In this paper, we apply the OQAM based multi-carrier transmission (OQAM-MCT) to a high-speed PLC system, where each subcarrier is individually band-limited. We also propose a pilot-symbol sequence suitable for frequency offset estimation, symbol-timing detection and channel estimation in the OQAM-MCT system. In this method, the pilot signal-sequence consists of a repeated series of the same data symbol. With this method, the pilot sequence approximately becomes equivalent to OFDM sequence and therefore existing pilot-assisted methods for OFDM are also applicable to OQAM-MCT system. Computer simulation results show that the OQAM-MCT system achieves both good transmission rate performance and low out-of-band radiation in PLC channels. It is also shown that the proposed pilot-sequence improves frequency offset estimation, symbol-timing detection and channel estimation performance as compared with the case of using pseudo-noise sequence.
ER -