Why this error message appears in matlab (Undefined variable "comm" or class "comm.BCHEncoder")?

Asked Oct 04 '19 at 08:07

Active Oct 04 '19 at 08:07

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I need to use BCHEncoder built in function in matlab, but matlab does not recognize it

I have a message called S, I want to encode it using BCHEncoder

S=randi([0 1],k,1);                                
enc = comm.BCHEncoder(n,k);   
% CodewordLength property set to N and the MessageLength property set to 
   K.                      
R=step(enc,S);

When this code run, this error message appears( Undefined variable "comm" or class "comm.BCHEncoder". )

asked Oct 04 '19 at 08:07

duaa h

I use matlab R2019a – duaa h Oct 04 '19 at 08:09
Check if you have communication toolbox: `license('test', 'communication_toolbox')` – Rotem Oct 04 '19 at 08:20
yes, it exists. – duaa h Oct 04 '19 at 08:28
It might be a path problem. Try: `restoredefaultpath`. Check if the toolbox in the path. In my machine: `find(contains(path, 'C:\Program Files\MATLAB\R2019a\toolbox\comm\comm')) ` – Rotem Oct 04 '19 at 09:05
I searched for communication toolbox in Add-Ons manager ,it is not installed. I install it and the code is run. Thank you very much. – duaa h Oct 04 '19 at 21:43

Why this error message appears in matlab (Undefined variable "comm" or class "comm.BCHEncoder")?

0 Answers0