how to estimate the probabity of undetected error in bch code

how to estimate the probabity of undetected error in bch code, could you give me a example (63,39) bch code?

Answer 1

[Samatha Aleti]

Hi,

“BCH codes” are better known for its error correction capability. You can use “bchgenpoly” function to know about the error-correction capability “t” and generator polynomial for a given codeword length “n” and message length” k”, using the following syntax:

[gp,t] = bchgenpoly(n,k); 

To know the valid message length values” k” and corresponding error-correction capability “t” for a given codeword length “n” you can use the “bchnumerr” function.Here is a sample code:

n = 63;
k = 39;
T = bchnumerr(n,k);

You can refer the MATLAB documentation page for examples about Overall workflow and Error detection and correction in “BCH codes” using MATLAB here

Hope this helps!