MisterTellini
Newbie level 1
Hello,
This topic has been asked several times here (such as in 'short frame of ldpc decoder for DVB-T2' -which is a different standard but shares the same parameters), however a solution is still to be reached. :bang:
Matlab Communication Toolbox does include a function, called 'dvbs2ldpc', which serves to implement a parity check matrix for DVB-S2 standard which is of length 64800. The standard accepts a shorter codeword version of 16200 which is however not included in Matlab's example.
After changing the codeword length in the original 'dvbs2ldpc' function and the tables from annex B from tables in annex C in the standard, the resulting BER curve is not as it should be (it should look like the one for normal transmission mode -codeword length 64800, but it has a completely different shape).
Could I be forgetting something? Could you please give some light to this issue?
Many thanks in advance, and best regards.
This topic has been asked several times here (such as in 'short frame of ldpc decoder for DVB-T2' -which is a different standard but shares the same parameters), however a solution is still to be reached. :bang:
Matlab Communication Toolbox does include a function, called 'dvbs2ldpc', which serves to implement a parity check matrix for DVB-S2 standard which is of length 64800. The standard accepts a shorter codeword version of 16200 which is however not included in Matlab's example.
After changing the codeword length in the original 'dvbs2ldpc' function and the tables from annex B from tables in annex C in the standard, the resulting BER curve is not as it should be (it should look like the one for normal transmission mode -codeword length 64800, but it has a completely different shape).
Could I be forgetting something? Could you please give some light to this issue?
Many thanks in advance, and best regards.
Last edited:
