Method for obtaining information on the residual errors in a transmitted channel-decoded digital signal

摘要

Reliability information obtained during the channel decoding of the transmitted signal is averaged over the short term; the short-term average reliability information is mapped to detect residual errors. The variable obtained by the mapping step is compared with at least one decision threshold, and the result of the comparison is transmitted as residual error information. In addition, the reliability information can also be averaged over the long term, the variable obtained by the mapping step being modified by the long-term average reliability information.