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題名 | ADSL-3用戶迴路模擬= |
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作者 | 文星超; 謝素琴; |
期刊 | 電信研究 |
出版日期 | 19951000 |
卷期 | 25:5 1995.10[民84.10] |
頁次 | 頁905-917 |
分類號 | 448.71 |
語文 | chi |
關鍵詞 | ADSL-3用戶迴路; |
中文摘要 | 非對稱睥位用戶迴路(Asymmetrical Digital subscriber Line, ADSL)利用一對電話機提 供電話服務,同時並可由局端至用戶端提供一單向的高速率(ADSL-1: 1.544Mb/s, ADSL-3:6.312Mb/s)數位傳輸通道及一雙向的低進(ADSL-1: 9.6kb/s, ADSL-.: 64 kb/s)之控制 ╱信號通道,此外,ADSL-3系統更將ISDN 2B+D及HO規劃其中。由於ADSL在我們日常 生活中有許多新型的應用,例如視訊點播(VOD)、影像電話、視訊會議等,因此在光纖尚未 全面佈放前成為提供用戶寬頻服務的一種可行方法。有許多種傳輸技術可用以設計ADSL系 統,不論採用那種傳輸技術,用戶迴路的模擬都非常重要,因為它不只提供傳收機架構設計 的參數並協助評估通道的輸傳容量與訂定傳輸工法。在本論中首先描述用以計算通道模型之 用戶迴路與變壓器的模型,然後再簡單說明所發展之使用者介面,最後再附上一些ADSL-3 迴路的模擬例子。 |
英文摘要 | The Asymmetrical Digital subscriber Line (ADSL) technology can simultaneously provide the POSTS, a unidirectional high rate (ADSL-1: 1.544,b/s, ADSL-3: 6.312Mb/s) disgital data transmission channel and a bi-directional low-speed (ADSL-1: 9.6kb/s, ADSL-3: 64kb/s) control/signaling channel from the Central Office to the customer premises on single twisted-pair telephone line. Besides, the ISDN 2B+D (two way 144kb/s) and H O (two way 384kb/s) are also embedded in ADSL-3 system. Since ADSL has many potential new applications in our daily life, such as viable candidate for video phone, video conference, etc., it has become a viable candidate for providing broadband services to customer before the optical fiber has been fully deployed in the loops. There are many transmission technologies have been proposed for ADSL, the modeling of subscriber loop is very important because it provides not only the design parameters of transceiver architecture but also helps to derive the transmission capacity and engineering guideline for the subscriber lines. In this paper, the models of subscriber line and transformer are presented firstly, then we make a concise description on the user interface. Finally, some simulation results of the ADSL-3 subscriber lines are appended. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。