本源码纠错编码BCH编解码，提供在AWGN下的误码性能方针，并与理论曲线进行比较-The source encoding and decoding BCH error-correcting code, provides error performance under AWGN approach and compared with the theoretical curve

BCH(15,5,7)a communication system consists of binary source, 3 error-correcting BCH code of length 15 over GF(24) (i.e, BCH (15,5,7 code), the primitive polynomial is p(x)=1+x+x4), BPSK modulator, AWGN channel, coherent demodulator, decoder (either B