MATLAB: Write a matlab code to compute golomb sequence

golomb sequence

Is there any function for golomb sequence in matlab?. write the code to display the golomb sequence [the numbers ].

Best Answer

function [seq] = golombseq(n)
%n is defined by user
a = zeros(1,n);
a(1,1) = 1;
for ii = 1:n
a(1,ii+1) = 1+a(1,ii+1-a(a(ii))); 
seq = a;
end

Related Solutions

MATLAB: Scalar Levinson Algorithm and Autocorrelation in MATLAB

I was able to solve the indices problem and correctly solve the levinson recursion equations. Posting just in case someone needs this in the future!

% Initialization
P = zeros(1,3);
alpha = zeros(1,3);
a(1,1) = -autocorr(2)/autocorr(1);
P(1) = autocorr(1);
P(2) = autocorr(1) - ((autocorr(2)^2)/autocorr(1));
% Start Algorithm
for N = 1:numlag-2
    sum = 0;
    for j = 1:N
        sum = sum + a(N,j)*autocorr(N+2-j);
    end
    alpha(N,1) = autocorr(N+2) + sum;
for i = 1:N
    a(N+1,i) = a(N,i) - (alpha(N)/P(N+1))*a(N,N+1-i);
end
    a(N+1,i) = a(N,i) - (alpha(N)/P(N+1))*a(N,N+1-i);
    a(N+1,N+1) = - alpha(N)/P(N+1);
    P(N+2) = P(N+1) - (alpha(N))^2/P(N+1);
    
% Tolerance Checks    
    zerochecker = abs(P(2) - P(1));
    if zerochecker < 0.5 
        N = 0;
        break
    end
    check = abs(abs(P(N+2)) - abs(P(N+1)));
    if  check < 1
        break
    end
end

As a BONUS I am posting my autocorrelation sequence below:

function [autocorr] = corr(numlag,dataD,n)
% autocorrelation sequence
for ii = 1:numlag
    lag = ii - 1;
        for iii = 1:n-lag
            seq1(iii,ii) = dataD(iii).* dataD(iii+lag);         
            numer = sum(seq1);
        end
        autocorr_unrounded = round(numer,2)';
end
autocorr = autocorr_unrounded/n;
end

MATLAB: Troubleshooting code for prompt and inputdlg

You need to convert ‘answer’ to a number:

N=str2double(answer);

That should work with your code.

Best Answer

Related Solutions

MATLAB: Scalar Levinson Algorithm and Autocorrelation in MATLAB

MATLAB: Troubleshooting code for prompt and inputdlg

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