Why is the output for the 1/4 rate short frame incorrect?
The output of the 1/2 normal and short frames and the 1/4 normal frame are correct, but the 1/4 short frame is incorrect.
This is a known problem with the 1/4 rate short frame mode, that will be fixed in v1.2 of the DVB S2 FEC Encoder.
Contact Xilinx Technical Support for a patch to the DVB S2 FED Encoder v1.1 at:
Please see (Xilinx Answer 30173) for a detailed list of LogiCORE DVB-S2 FEC Encoder Release Notes and Known Issues.