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I have a matix having binary numbers [001;011;111;111] . How can i convert it to a matrix like [0 0 1 0 1 1 1 1 1 1 1 1]? I want to modulate but could not understand how to modulate the first matrix so i need to convert it into a bitstream. So please help

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Mubasher
Mubasher 2012-5-8
clear; clc;
data_size=100;
M=2;
freq_sep=500;
nsamp=6;
fs=10000;
n=2;
y=wavread('voice');
partition=[-.8,-.6,-.5,-.4,-.3,-.2,-.1,0,.1,.2,.3,.4,.5,.6,.8];
codebook=[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15];
% Now optimize, using codebook as an initial guess.
[partition2,codebook2] = lloyds(y,codebook);
[index,quants,distor] = quantiz(y,partition,codebook);
[index2,quant2,distor2] = quantiz(y,partition2,codebook2);
%Compare mean square distortions from initial and optimized
[distor, distor2] % parameters.
quantization=dec2bin(quants,4);
*x=str2num(quantization);
fsk_mod=fskmod(x,M,freq_sep,nsamp,fs);
*noise=awgn(fsk_mod,0);
fsk_demod=fskdemod(noise,M,freq_sep,nsamp,fs);
[num,rate]=biterr(quants,fsk_demod)
sound(fsk_demod)

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回答（1 个）

Walter Roberson
Walter Roberson 2012-5-8
[001;011;111;111] is not binary numbers: it is a column array of decimal numbers. one. eleven. one hundred and eleven.
If instead your matrix is A = [0 0 1;0 1 1; 1 1 1; 1 1 1] then you want
t = A.';
B = t(:) .';
  2 个评论
Mubasher
Mubasher 2012-5-8
sir
I am implementing bfsk for an audio file of .wav format. For bfsk input to fskmod should be binary. I am having problem in quantizing the sampled audio file. If you please read the code and suggest something?

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