generate a random binary code of value +1 or -1 of length n in matlab in matlab

To generate a random binary code of value +1 or -1 of a given length n in MATLAB, you can use the randsrc function along with the randi function. Here's how:

main.m
% Set the length of the binary code
n = 10;

% Generate an array of random integers with values 1 or 2
rand_int = randi([1 2], 1, n);

% Convert the random integer array to a binary code
% where 1 maps to +1 and 2 maps to -1
rand_bin = 2*rand_int - 3;
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In the code above, we first set the length of the binary code, n. We then use the randi function to generate an array rand_int of n random integers with values either 1 or 2. Next, we use a simple conversion formula to convert the rand_int array to a binary code rand_bin, where 1 maps to +1 and 2 maps to -1. Finally, the resulting binary code is stored in the rand_bin array.

Note that the conversion formula used here (2*rand_int - 3) works because rand_int only contains values of either 1 or 2. If the range of values generated by randi were different, you would need to modify the conversion formula accordingly.