Abstract:
The disclosure relates to a device (200) for adjusting a size for transmissions of encoded symbols over a communication link in case of decoding failures, the device (200) comprising: a Soft-Input-Soft-Output (SISO) decoder (201) configured to decode input information (L in (l) , 202) derived from a transmission of encoded symbols (r (l) ) over a communication link to obtain output information (L out (l) , 204); a failure detector (203) configured to detect a decoding failure (206) of the SISO decoder (201 ) based on an evaluation of the output information (L out (l) , 204); and a processor (205) configured to adjust a size (N', 208) for a next transmission of encoded symbols (r (l+1) ) based on a functional relation of an average bit-wise entropy ( H ) of the output information (L out (l) , 204) normalized with respect to the input information (L in (l) , 202) in case of a decoding failure (206).