Field Trial of a Single Frequency Retransmission Relay at the Shiroishi Relay Station

白石中継局における放送波中継SFN実験 [in Japanese] Field Trial of a Single Frequency Retransmission Relay at the Shiroishi Relay Station [in Japanese]

- 今村浩一郎 IMAMURA Koichiro
- NHK放送技術研究所 NHK Science and Technical Research Laboratories
- 濱住啓之 HAMAZUMI Hiroyuki
- NHK放送技術研究所 NHK Science and Technical Research Laboratories
- 佐伯暖 [他] SAEKI Dan
- NHK大阪放送局 NHK Osaka Station
- 岡重雄 OKA Shigeo
- NHK仙台放送局 NHK Sendai Station
- 渋谷一彦 SHIBUYA Kazuhiko
- NHK放送技術研究所 NHK Science and Technical Research Laboratories
- 佐々木誠 SASAKI Makoto
- NHK放送技術研究所 NHK Science and Technical Research Laboratories
- 金井隆夫 KANAl Takao
- 古河電気工業(株) The Furukawa Electric Co., Ltd.

References (10)
Cited by (16)

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Author(s)

- 今村浩一郎 IMAMURA Koichiro
- NHK放送技術研究所 NHK Science and Technical Research Laboratories
- 濱住啓之 HAMAZUMI Hiroyuki
- NHK放送技術研究所 NHK Science and Technical Research Laboratories
- 佐伯暖 [他] SAEKI Dan
- NHK大阪放送局 NHK Osaka Station
- 岡重雄 OKA Shigeo
- NHK仙台放送局 NHK Sendai Station
- 渋谷一彦 SHIBUYA Kazuhiko
- NHK放送技術研究所 NHK Science and Technical Research Laboratories
- 佐々木誠 SASAKI Makoto
- NHK放送技術研究所 NHK Science and Technical Research Laboratories
- 金井隆夫 KANAl Takao
- 古河電気工業(株) The Furukawa Electric Co., Ltd.

Abstract

地上デジタル放送におけるSFNを放送波中継で実現する場合、中継放送所の送受アンテナ間の回り込みによる発振や信号の劣化が大きな問題となる。この回り込み対策として、回路的に回り込みを打ち消す回り込みキヤンセラ、ならびに、低サイドローブ特性を有する平面受信アンテナの開発を行っている。本報告では、平成12年5月に東北地区の地上デジタル放送研究開発用共同利用施設である白石中継局において行った放送波中継SFN実験の結果について述べる。実験は、回り込みキヤンセラと平面受信アンテナを使用し、送受アンテナ非分離の形式で行った。この実験において、回り込み波の強さが親局波よりも強い条件下でも、安定に中継できることを確認した。

At relay stations in SFN(Single Frequency Networks)for DTTB(Digital Terrestrial Television Broadcasting), the distortion or oscillation of the transmittihg signals caused by coupling loop interference between the transmitting and receiving antennas is a severe problem. To alleviate this interference, we have developed a coupling loop interference canceller which uses an electrical circuit to cancel the interference, and a receiving antenna whith has reduced sidelobes. This paper describes the results of a single frequency retransmission field trial at the Shiroishi relay station for DTTB in May, 2000. In the trial, we verified stable retransmission by using the coupling loop interference canceller and low-sidelobe receiving antenna, under the difficult condition that the power of the coupling loop interference was greater than that of the master station wave.

Journal

ITE Technical Report

ITE Technical Report 25.7(0), 53-58, 2001

The Institute of Image Information and Television Engineers

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