Method and apparatus for decoding ZigZag code

The invention relates to the communication field and discloses an ZigZag code decoding method and apparatus thereof, which effectively improves the decoding performance of the ZigZag code. In the invention, the MLM decoding algorithm is improved, and the W function obtained by the MLM decoding algorithm is corrected and then used for code decoding, a correction factor is simply multiplied to the W function during correction. The preferred value scope of the correction factor is from 0.5 to 1.0, and the preferred value is 0.8, and 0.75 can also be used as the correction factor, thereby the optimizing can be executed during the hardware process without any time-delay.