Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!csri.toronto.edu!itrctor
From: itrctor@csri.toronto.edu (Ron Riesenbach)
Newsgroups: ont.events
Subject: ITRC sponsored DSP Seminar
Message-ID: <8905111327.AA01778@ellesmere.csri.toronto.edu>
Date: 11 May 89 13:27:43 GMT
Distribution: ont
Organization: University of Toronto, CSRI
Lines: 42


                             ITRC sponsored DSP seminar

Friday, May 12, 1989
10:00 - 12:00
Rm GB248, Galbraith Bldg., Univ. of Toronto
Everyone is welcome
Coffee and muffins supplied courtesy of ITRC ;-)



             "Block Coding as Applied to Voice Line Modems"


                            Fred Longstaff
                             VP - Systems
                    Motorola Information Systems





                               ABSTRACT
                              ----------

    Block coding, based on a multidimensional lattice, is an alternative to the
more commonly used trellis codes.  The block coding problem consists of three
parts: encoding, detection and decoding.


     o Encoding:   Conversion of data to be transmitted in coordinates of a
                   lattice point.

     o Detection:  Conversion of the received coordinates into those of the
                   nearest lattice point.

     o Decoding:   Further conversion of the received data.


       This talk will review the fundamental principles of block coding and will
describe two examples of the use of this technique:  the 8-dimensional Gosset
lattice, and the 24-dimensional Leech lattice, A24.