McGill Univerity

Departement of Electrical & Computer Engineering

VHDL design of an MPEG 2 compliant DVB Channel

Authors: Yanai Danan & Ikbal Houssaini

Comarch5

November 98

Abstract:

Digital Video Broadcasting (DVB) has become the basis for digital television and for data broadcasting world-wide. DVB services have recently been introduced in Europe, in North- and South America, in Asia, Africa and Australia. This project aims at describing Transmission and return channels that makes possible the broadcasting of datacontainers in which all kinds of digital data up to a datarate of 38 Mbit/s can be transmitted at bit-error rates in the orderof 10^-11.

We propose to implement a VHDL design of the channel coding,i.e. a characterization of the algorithms used for adaptation of the MPEG 2 source signal to the transmission medium (PSTN/ISDN, MATV etc..).This includes the QEF-(Quasi-Error-Free) Forward Error Correction and the modulation as well as all kinds of format conversion and filtering.

One of the strengths of DVB technology lies in the fact that it enables the point to multipoint transmission of very large amounts of data at high data rates while very securely protecting them against all kinds of transmission errors. These data may be audio and/or video but in many applications the data will be files or other forms of generic information. In order to enable the transmission of such kind of data, including the possibility of repeat trans- -missions of the same data at regular or irregular time intervals, a specification for data broadcasting schemes has recently been developed.This project will be concerned with satellite delivery of DVB signals entitled DVB-S as suggested in the ETSI's (European Telecommunications Standards Institute) June 98 white paper.

References:

[1] Reimers, Ulrich (ed.): Digitale Fernsehtechnik - Datenkompression und Übertragung
für DVB. 2nd Edition. Berlin, Heidelberg, New York: Springer-Verlag , 1997.

[2] EN 300 468: "Digital Video Broadcasting (DVB); Specification for Service Information
(SI) in DVB systems".

[3]:ISO/IEC 13818-1: "Information technology - Generic coding of moving pictures and
associated audio information - Part 1: Systems - International Standard (IS)".

[4]: Reimers, Ulrich: A Guideline for the Use of DVB Specifications and Standards,
DVB-Document TM 1694, rev.1, September 1996.

[5]: Wood, D.; Satellites, science and success - The DVB story. EBU Technical Review No. 266 - Winter 1995.

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