A High-Speed Power-Line Communication System with Band-Limited OQAM Based Multi-Carrier Transmission
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概要
- 論文の詳細を見る
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.
- （社）電子情報通信学会の論文
- 2009-02-01
著者
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MUTA Osamu
Graduate School of Information Science and Electrical Engineering, Kyushu University
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AKAIWA Yoshihiko
Graduate School of Information Science and Electrical Engineering, Kyushu University
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Muta Osamu
Kyushu Univ. Fukuoka‐city
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Muta Osamu
Graduate School Of Information Science And Electrical Engineering Kyushu University
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Akaiwa Yoshihiko
Graduate School Of Information Science And Electrical Engineering Kyushu University
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Koga Hisao
Network Products Development Center Panasonic Communications Co. Ltd.
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KAWABATA Naohiro
Graduate School of Information Science and Electrical Engineering, Kyushu University
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Kawabata Naohiro
Graduate School Of Information Science And Electrical Engineering Kyushu University
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Muta Osamu
Graduate School Of Information Sci. And Electrical Engineering Kyushu Univ.
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Akaiwa Yoshihiko
Univ. Of Electro-communications
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