Wireless CATV Uplink System with Subcarrier Modulation Using Infrared Communications for Apartment Houses
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概要
- 論文の詳細を見る
CATV networks are considered as promising transmission channels in that they permit wide bandwidth and high quality data communications. In apartment houses, however, the ingress noise in the up-links due to the tree and branch structure of a network deeply degrades the transmission performance of data communication channels. This is a serious problem especially in apartment houses which are often equipped with old coaxial cables. It permits the noise generated from electrical appliances to disturb up-link data communications. In this paper, we propose a wireless CATV system. In the proposed system, the noise generated in the room of a subscriber does not intrude into a trunk line. We analyze the upstream channels of this system. Based on the results of numerical analyses, we found that the proposed system is suitable and practical for up-link operation in CATV networks for apartment houses.
- 社団法人電子情報通信学会の論文
- 2001-12-01
著者
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NAKAGAWA Masao
the Faculty of Science and Technology, Keio University
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Takano Masatoshi
The Multimedia Business Promotion Div.of Japan Telecomm Co. Ltd.
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Tomioka Kazuhiro
The Multimedia Business Promotion Div.of Japan Telecomm Co. Ltd.
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TANAKA Yuichi
the Faculty of Science and Technology, Keio University
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Tanaka Yuichi
The Faculty Of Science And Technology Keio University
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Nakagawa Masao
The Faculty Of Science And Technology Keio University
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