This function generates an Additive White Gaussian Noise (AWGN) sample at every call. Its beauty lies in its simplicity! The generated sample set will have zero mean and a standard deviation of 1. Therefore, one can simply scale the output samples by

使用VC实现高斯白噪声的产生，对于仿真模拟有帮助。-The use of VC to achieve the generation of Gauss white noise, for simulation help.