Abstract: An arrangement and method for Turbo processing iterative decoding in a radio receiver comprises receiving a block of data for decoding; decoding a whole block of data to produce a respective decoded output; dividing the received decoded whole block of data into a plurality of sub blocks; producing a determination of whether the decoded output of each of the sub blocks has substantially converged; storing said determination for each of the sub blocks; and further decoding over the whole block of data only sub blocks whose determinations do not indicate substantial convergence.

Abstract: An arrangement (100) and method for Turbo processing iterative decoding in a radio receiver (10) using a stopping criteria scheme in which a block (110) to be decoded is divided into smaller sub blocks and the stopping criteria are computed separately for each sub block. Further decoding iterations (140) are performed only on those sub blocks whose stopping ctiteria have not ben met. The stopping criteria used in each sub block can be any of the prior art criteria such as CE, SRC, HDA or preferably LAA stopping criteria. The invention can therefore have similar properties as the prior art (in terms of performance and complexity) combined with a lower average number of iterations and reduced power consumption. The same scheme may serve both for stopping criteria and abort criteria, reducing hardware compared to separate criteria, and reducing the worst case requirement for decoding rate (and reducing corresponding hardware requirements).