分别用中心极限定理和Box-Muller方法产生高斯噪声，用于二进制双极性基带通信系统仿真，比较其仿真运行时间及结果，并简单分析其原因-Central limit theorem, respectively, and Box-Muller methods Gaussian noise for bipolar binary baseband communication system simulation, compared to running time and the results of si

Pi/4-DQPSK差分编码以及非相干解调和误码率计算。Box-muller产生AWGN和高斯信道。-Pi/4-DQPSK differential coding and non-coherent demodulation and error rate. Box-muller produce AWGN and Gaussian channel.