translatt.m

Lattice coding and decoding

function trlatt = translatt(latt,trvect)

%TRANSLATT Lattice translation
%   Q = TRANSLATT(L,TRVECT) performs lattice translation into desired
%   direction. TRVECT assigns a value to each dimension to be translated.
%
%   Example:
%       We decompose Z2 lattice into the four cosets and label each one
%       by the letters A,B,C and D
%
%       pts = 2 ^ 4;
%       Z2 = makelatt('Z',pts,2);
%       A = Z2;
%       B = translatt(Z2,[0,.5]);
%       C = translatt(Z2,[.5,0]);
%       D = translatt(Z2,[.5,.5]);
% 
%       showlatt(A,'Style',7,'Labeling','A'); hold on;
%       showlatt(B,'Style',8,'Labeling','B');
%       showlatt(C,'Style',9,'Labeling','C');
%       showlatt(D,'Style',10,'Labeling','D');
%
%   See also ROTLATT.

%   Copyright 2001-2003 Kamil Anis, [e-mail]
%   Dept. of Radioelectronics, 
%   Faculty of Electrical Engineering
%   Czech Technical University in Prague
%   $Revision: 0.1 $  $Date: 2003/1/16 17:33:28 $
%   --
%   <additional stuff goes here>

[m,n] = size(latt);

tr = repmat(trvect,m,1);
trlatt = latt + tr;