Blind Recognition of(2,1,m) Convolutional Code Based on Parity-Check Statistics

In view of the communication countermeasure development from signal to information,the recognition of channel coding is a problem that must be solved in information interception.A method is proposed based on parity-check statistics,to recognize the(2,1,m) convolutional code.Firstly,the best paritycheck matrix is achieved by statistic,and then the generator polynomial matrix is deduced.At last,the simulation of MATLAB proves that all(2,1,m) convolutional code could be recognized,this method has a good performance of error-resilient.