Upgrade of coaxial CATV networks for upstream high speed digital communication

Author

Brendle, Peter ; Speidel, Joachim

Author_Institution

Inst. fur Nachrichtenuebertagung, Stuttgart Univ., Germany

Volume

44

Issue

3

fYear

1998

fDate

9/1/1998 12:00:00 AM

Firstpage

353

Lastpage

362

Abstract

There is a growing interest to extend existing coax CATV networks to enable interactive multimedia services. In this paper we describe necessary modifications and additions of CATV network components to provide broadband upstream channels in the range of 6 to 40 MHz. To investigate linear and nonlinear distortions, reflexions, noise and ingress, suitable digital modulation schemes and adaptive equalization, the CATV network-components are modelled and a computer simulation program using PTOLEMY is established. It is shown that all 3370 subscribers of an existing CATV sub-network can be provided with up to 25 kbit/s collision free on the physical network layer. Using appropriate teletraffic and media access control protocols, user bit rates of up to 2 Mbit/s are feasible in the upstream direction

Keywords

broadband networks; cable television; coaxial cables; digital television; interactive television; multimedia communication; subscriber loops; 2 Mbit/s; 25 kbit/s; 6 to 40 MHz; CATV sub-network; PTOLEMY; adaptive equalization; broadband upstream channels; coaxial CATV networks; digital modulation schemes; ingress; interactive multimedia services; linear distortion; media access control protocols; noise; nonlinear distortion; reflexions; subscribers; teletraffic; upstream direction; upstream high speed digital communication; user bit rates; Coaxial components; Costs; Digital communication; Digital modulation; Distributed amplifiers; Frequency division multiaccess; Media Access Protocol; Nonlinear distortion; TV; Time division multiple access;

fLanguage

English

Journal_Title

Broadcasting, IEEE Transactions on

Publisher

ieee

ISSN

0018-9316

Type

jour

DOI

10.1109/11.715323

Filename

715323