According to the documentation of comm.BCHEncoder default value of M is 15. But in this case, the value of M (the degree of the primitive polynomial) is calculated using the following relation
In addition to the above, "BCHPrimitivePoly" property of dvb object is set to a binary vector of length 17 which results in the value of M being 16.
The documentation page for comm.BCHEncoder mentions that the codeword length must use the form (2^M-1) for full-length BCH codes. The one which we use in DVBS2 is shortened so the codeword length(43200) should be less than or equal to 65535(2^16-1)
Best Answer