瑞丽信道仿真 噪声信号由MATLAB函数randn(1,N)产生，它从均值为0、方差为1的正态分布中产生N个伪随机数。每次迭代时，要使用相应的标准差对噪声的幅度进行尺度变换，最后，将输入信号和噪声信号相加得到输出信号。-Ruili channel simulation noise signal by the MATLAB function randn (1, N) generated, which from the mean 0, variance for a normal distribu

扩频信号FSK调制与差分解调仿真，包含电路图设计，莱斯噪声，瑞丽噪声，高斯噪声信道分析-Spread spectrum signal FSK modulation and demodulation simulation difference, including circuit design, rice noise, ruili noise, gaussian noise channel analysis

高斯、泊松、瑞丽分布是信道中噪声最基本的几种分布到情况，了解信道噪声情况对于信道去噪是很有必要的-it is very important in the processing of denoising