Parallel decoding method and turbo decoder

Provided are a Turbo decoder and a parallel decoding method. The Turbo decoder includes a first interleaver and a second interleaver. The first interleaver includes a first LTE interleaving module, a first TD/W interleaving module and a first selector. The second interleaver includes a second LTE interleaving module, a second TD/W interleaving module and a second selector. The method realizes multi-mode compatibility of the Turbo decoder, solves the parallel interleaving problem in the TD/W mode, and enables the Turbo decoder in the LTE mode and the Turbo decoder in the TD/W mode to integrate as one, thus reducing the hardware scale.