Method end device for source decoding a variable-length soft-input codewords sequence

摘要

The invention concerns a method for source decoding a variable-length soft-input codewords sequence (y [1: T]) into a soft-out-put bit sequence (Lv [1: T]), the variable-length soft-input input code-words sequence (y [1: T]) encoded in accordance with a VLC codewords table. It comprises—a first stage (100) of implementing a stack decoding algorithm for a sequential estimation of an hard-output bit sequence of said variable length soft-input codewords sequence, including storage of intermediate data contained in the stack and generated by the stack decoding algorithm; and—a second subsequent stage (102) of post-processing the stored intermediate data for generating the soft-output bit sequence (Lv [1: T]), a soft-output (L(x [t])) being provided for each bit.