?? int_dump.m
字號:
function [out] = int_dump(in);
% INT_DUMP .... Integrate and Dump receiver.
%
% Y = INT_DUMP(X) integrates the input sequence X over one bit period
% and then dumps the value to the output, i.e., resets the
% integrator.
% AUTHORS : M. Zeytinoglu & N. W. Ma
% Department of Electrical & Computer Engineering
% Ryerson Polytechnic University
% Toronto, Ontario, CANADA
%
% DATE : August 1991.
% VERSION : 1.0
%===========================================================================
% Modifications history:
% ----------------------
% o Added "checking" 11.30.1992 MZ
% o Tested (and modified) under MATLAB 4.0/4.1 08.16.1993 MZ
%===========================================================================
global START_OK;
global SAMPLING_CONSTANT;
global SAMPLING_FREQ;
global BINARY_DATA_RATE;
global BELL;
global WARNING;
check;
%---------------------------------------------------------------------------
% Check input parameters
%---------------------------------------------------------------------------
if (nargin ~= 1)
error(eval('eval(BELL),eval(WARNING),help int_dump'));
return;
end
np = SAMPLING_CONSTANT;
no_bit = length(in)/np;
index = [1:np];
rc = 0.0025;
[b a] = butter(1,rc);
out(index) = filter(b,a,in(index));
for k=2:no_bit
index = index + np;
out(index) = filter(b,a,in(index));
end
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