I am following two references to build up my SC-LDPC encoder. I may refer to them as [1] and [2] from now onwards.
I used [1] to build up my parity check matrix, which is of dimension $(M(L \cdot d_v + d_v - 1), \quad M \cdot d_c \cdot L) $. I used the following parameters:
- $M = 4$
- $L = 1352$ (I want to encode an information block of $k = 5400$ length.
- $d_c = 4, d_v = 3$
After successfully building it up using section 3 in ref. 1, I needed to terminate my code to ensure that the encoder was returning to zero state. This is, according to reference 2 I would need to append 8 bits to the information message to efficiently terminate my code. The problem is, that I would be supposed to get a syndrome termination of $p_L = 6$ length according to equation 16 from 2. On the contrary I do get a sequence of 8 bits, which are supposed to be derived from the number of checks in my parity-check matrix, but I don't know how to make this match with my expected length for $p_L$.
[1]: 'An efficient method to construct parity-check matrices for recursively encoding spatially coupled LDPC codes' (easibly traceable through Google search)