Presentation 1999/3/16
An introduction of up-link access method for cable modem which provides better robustness to actual ingress noise, and the result of test in an actual CATV network
Kazuhiro OHTA, Toshikazu NEZU, Shuya HOSOKAWA, Shinichiro OHMI, Hiroshi OHUE, Shinya KATOH, Kohji KATAYAMA, Yoshikatsu ARAKI,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) Ingress noise is generally known to degrade up-link signals in CATV network. In particular, ingress noise in the frequency band lower than 20MHz disturbs seriously the data communication. In this paper, at first, we analyze the ingress noises in the actual CATV networks. Based on the measurement result above, we introduce the up-link access method, which uses multi-carrier frequency hopping mechanism. Then we show a potential of communication in low frequency bandwidth by means of the test result in an actual CATV network with the cable modem system that uses the access method.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Cable modem / CATV / ingress noise / hopping
Paper # EMCJ98-110
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Conference Information
Committee EMCJ
Conference Date 1999/3/16(1days)
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Registration To Electromagnetic Compatibility (EMCJ)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) An introduction of up-link access method for cable modem which provides better robustness to actual ingress noise, and the result of test in an actual CATV network
Sub Title (in English)
Keyword(1) Cable modem
Keyword(2) CATV
Keyword(3) ingress noise
Keyword(4) hopping
1st Author's Name Kazuhiro OHTA
1st Author's Affiliation Matsushita Electric Industrial Co., Ltd.()
2nd Author's Name Toshikazu NEZU
2nd Author's Affiliation Matsushita Electric Industrial Co., Ltd.
3rd Author's Name Shuya HOSOKAWA
3rd Author's Affiliation Matsushita Electric Industrial Co., Ltd.
4th Author's Name Shinichiro OHMI
4th Author's Affiliation Matsushita Electric Industrial Co., Ltd.
5th Author's Name Hiroshi OHUE
5th Author's Affiliation Matsushita Electric Industrial Co., Ltd.
6th Author's Name Shinya KATOH
6th Author's Affiliation Matsushita Electric Industrial Co., Ltd.
7th Author's Name Kohji KATAYAMA
7th Author's Affiliation Matsushita Electric Industrial Co., Ltd.
8th Author's Name Yoshikatsu ARAKI
8th Author's Affiliation Matsushita Electric Industrial Co., Ltd.
Date 1999/3/16
Paper # EMCJ98-110
Volume (vol) vol.98
Number (no) 661
Page pp.pp.-
#Pages 6
Date of Issue