Synchronized discrete multitone: a bandwidth-efficient solution for the upstream channel of an HFC system

John A.C. Bingham

doi:10.1117/12.227279

24 November 1995 Synchronized discrete multitone: a bandwidth-efficient solution for the upstream channel of an HFC system

John A.C. Bingham

Author Affiliations +

Proceedings Volume 2609, Hybrid Fiber-Coax Systems; (1995) https://doi.org/10.1117/12.227279
Event: Photonics East '95, 1995, Philadelphia, PA, United States

Abstract

Discrete multitone (DMT) has been accepted as a very effective modulation technique for point-to-point transmission on a channel whose SNR is highly frequency-dependent, and it has been adopted by ANSI as the standard for ADSL [up to 7 Mbit/s on unshielded twisted- pair (UTP)]. Synchronized DMT (SDMT), a variation of DMT for multipoint-to-point transmission, will be proposed to the ATIS committee T1E1.4 for VDSL (up to 51.8 Mbit/s on hybrid fiber/UTP), and to the IEEE committee 802.14 for the upstream channel of an HFC system. This paper describes the method of synchronization, which allows the efficient combination of signals from multiple transmitters without the use of guard bands in either the frequency- or time-domain. It also describes a protocol for controlling access to the shared channel by these transmitters, which may have widely varying needs for data rates and formats.

Citation Download Citation

John A.C. Bingham "Synchronized discrete multitone: a bandwidth-efficient solution for the upstream channel of an HFC system", Proc. SPIE 2609, Hybrid Fiber-Coax Systems, (24 November 1995); https://doi.org/10.1117/12.227279

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available