Blind recognition of channel coding plays an important role in the field of non-cooperative signal processing

which has been extended from the signal level to the information level.Blind recognition of channel coding is widely used in the fields of intelligence communication

information interception and information countermeasure.Firstly

the recognition algorithms of convolution code

BCH code

RS code

Turbo code and scramble code which are commonly used in modern digital communication systems were summarized and classified.Then the theories of the algorithms were described

and the computational complexity and performances in noisy environment of the algorithms were analyzed.Finally

the future of blind recognition of channel coding was pointed out based on the shortcoming of current algorithms and practical need.