書誌事項
- タイトル別名
-
- An Applicability Study of ADSL in Japanese Subscriber Lines
- ニホン ノ カニュウシャセン ニ オケル ADSL テキヨウ カノウセイ ノ
この論文をさがす
抄録
The ADSL technology is standardized in US by ANSI to enable digital transmission speed of 1.5Mbps-6Mbps over existing copper phone access line. The ADSL technology extracts almost full capability, up to the theoretical limitation imposed by Shannon's Theory, of the access line. The limitation is solely determined by loss and cross talk noise of the access line. The ADSL technology is not so sensitive to bridged taps or AM radio wave, which are commonly seen hazards of phone access lines. But, in Japan, phone access lines are different from those in US. In Japanese phone cables, 4 wires are twisted together, and pulp as well as polyethylene is used as insulating material. As a result the access lines in Japan suffers more loss and crosstalk. Moreover, the ISDN modulation method in Japan generates a lot more nose to ADSL than that in US. The ANSI ADSL technology is first evaluated with access line environment in Japan. Then, three approaches; separation of ISDN and ADSL access line, ADSL power increase, ISDN filter capability enhancement are proposed and evaluated. It can be concluded that the ADSL technology is applicable also in Japan.
収録刊行物
-
- 電気学会論文誌C(電子・情報・システム部門誌)
-
電気学会論文誌C(電子・情報・システム部門誌) 118 (4), 569-577, 1998
一般社団法人 電気学会
- Tweet
キーワード
詳細情報 詳細情報について
-
- CRID
- 1390282679584071808
-
- NII論文ID
- 130006843298
- 10002813607
-
- NII書誌ID
- AN10065950
-
- ISSN
- 13488155
- 03854221
-
- NDL書誌ID
- 4436287
-
- データソース種別
-
- JaLC
- NDL
- Crossref
- CiNii Articles
-
- 抄録ライセンスフラグ
- 使用不可