generate odd and even numbers from randn function in simulink

i need to generate odd and even numbers from a random binary array in simulink. Can someone help me with that. For example if i have a random arrary of binary numbers i.e. 0 1 1 1 0 0 1 and would like to split this array to even and odd index. So for even it would be: 1 1 0 and for odd: 0 1 0 1. I did it in matlab but could not do it in simulink. the matlab code is

data=randn(1,N)>=0; %Generating a uniformly distributed random 1s and 0s 
oddData = data(1:2:end); 
evenData = data(2:2:end); 

[Walter Roberson]

It is not obvious why you are using randn()>=0 instead of rand() >= 0.5 ?

[Redhwan Mawari]

that will work as well. The issues is generating odd and even from the binary numbers.

Answer 1

[Walter Roberson]

https://www.mathworks.com/help/dsp/ref/convert1dto2d.html -- reshape the vector to two rows

https://www.mathworks.com/help/dsp/ref/variableselector.html -- use twice, once to select row 1 (odd indices), once to select row 2 (even indices)

The above two require DSP.

If you have a fixed signal length then you could use https://www.mathworks.com/help/simulink/slref/selector.html listing all of the desired indices directly (I am not sure if you can use colon notation there.)

[Redhwan Mawari]

Thanks for the answer. I tried to follow but was not successful. I’m not getting the odd and even numbers

[Walter Roberson]

Which approach did you use?

Is your input a vector, and each time you want to take odd/even elements of the vector?

Or is your input a scalar signal, and you want to direct alternate bits different ways? Is it perhaps a Serial to Parallel convertor?

[Walter Roberson]

https://www.mathworks.com/help/dsp/ref/buffer.html -- collect groups of two bits

After which you can use variableselector or https://www.mathworks.com/help/simulink/slref/selector.html to select the two different elements.

[John D'Errico]

Moved from an answer to a comment:

"I’m trying to replicate the code below using simulink"

data=randn(1,N)>=0.5;
%Generating a uniformly distributed random 1s and 0s
odddata = data(1:2:end);
evenData = data(2:2:end);