BCH code parameters for DVB S2

The DVBS2 standard defines A t-error correcting BCH (Nbch, Kbch) . For a specific LDPC rate (1/4) the BCH parameters are (16200,16008),

When I use these parameters in MATLAB , code = bchenc(msg,16200,16008)

this does not work as N=16200 and not in the form 2^m-1.

Any help, much appreciated

Answer 1

[Chidvi Modala]

The BCHEncoding in DVBS2 standard uses shortened code. bchenc function supports creation of full-length BCH code(Code word length should be of the form 2^M-1) only. Instead, you may use comm.BCHEncoder function which provides support for shortened codes as well.