Matlab code for punctured convolution coding for code rate 1/2 punctured rate 3/4

Hi, I am currently working with punctured convolution code with rate 1/2 and puncture rate 3/4. Without adding awgn noise the viterbi decoding produces non zero biterror rate. Can anyone provide matlab code for same.

-Thanks in advance

[Zara]

Hey NANDANA

Check this code, you'll get the idea how to simulate it

https://in.mathworks.com/help/comm/ug/punctured-convolutional-coding-1.html

https://in.mathworks.com/help/wireless-hdl/ug/convencpunc.html