SYSTEMS AND METHODS FOR ITERATIVE TURBO DECODING WITH A LOW ERROR RATE AND OF LOW COMPLEXITY

摘要

The invention relates to a first method comprising the use of the path metrics on the right-hand edge of the sub-blocks as initialisation metrics for the following sub-block of the following iteration, and the use of the path states of the left-hand edge of the sub-blocks to create the last movement backwards from a reliable state of the previous SOVA decoder. The invention also relates to a second method comprising the storage of the LLR metrics in an input memory bank, the calculation of a posteriori metrics via the decoder(s), the calculation of the extrinsic information via one or more extrinsic calculation units, and the comparison of the a posteriori LLR measurements throughout different iterations. The invention further relates to systems that carry out said methods.