Apparatus and method for controlling iterative decoding for turbo decoder using compare of LLR's sign bit

摘要

The present invention compares the sign bit of the output value of the soft decision LLR of the turbo decoder is configured in series, the coefficients is by using a different degree of the sign bit of a given iterative decoding control apparatus and method for a turbo decoder using a code comparison of the LLR to reduce the decoding delay after interruption by the iterative decoding. Iterative decoding of the turbo decoder as the control device compares the sign of the LLR using a turbo decoder, a turbo decoding iteration to open the coded data to output a soft decision value of the decision value output means, of the soft decision value outputted from the soft decision value output means compares the code with a different code, the count, or if the decoding iteration count exceeds the maximum number of iterations is set, repeated interruption control means and stop control means repeatedly performs iterative decoding depending on whether or not to stop the iterative decoding of the turbo decoder soft decision includes a hard-decision value output means for outputting the hard decision output value of the appointed decoded result value output means.