实现 AWGN信道下的理论误码特性和仿真误码特性，GSM系统卷积码在AWGN信道的误码特性，GSM系统卷积码在突发信道和AWGN信道的误码特性，GSM系统卷积码和交织编码在突发信道和AWGN信道误码特性-AWGN channel to achieve the theoretical BER performance and simulation of BER performance, GSM system, convolutional code in AWGN channel BER perfor