9.3.7 ‘White noise’ and its interpretation Gaussian‘white’ noise Ntωt∈−∞,∞, in fact, is a model for a ‘completely’ random process whose individual random variable Nt=t′,ω is normally distributed. As
The first order probability density functions of the sums of N independent sinusoidal waves having random amplitudes and phases in additive Gaussian noise are studied for the cases where N is fixed and where N in Poisson distributed. The conditional moments about the origin are obtained in closed ...
To generate repeatable white Gaussian noise samples, use one of these tips: Provide a staticseedvalue as an input towgn. Use thereset (RandStream)function on therandobjectbefore passing it as an input towgn. Providerandobjectin a known state as an input towgn. For more information, seeRand...
Set the random number generator seed. seed = 12345; Generate repeatable random noise using the rng function before calling the awgn function. rng(seed); y = awgn(x,snr); Compute the bit errors. dataHat = pskdemod(y,M); numErr1 = biterr(data,dataHat,k) numErr1 = 309 Reset the ...
Random noise vs. White/Gaussian noiserand() is a MATLAB random number generator. It generates random variables that follow a uniform probability distribution. randn() generates random numbers that follow a Gaussian distribution.
To generate repeatable white Gaussian noise samples, do one of the following: Userng(seed) before calling theawgnfunction to generate repeatable random noise. Provide a staticseedvalue as an input toawgnexcept when the input is adlarrayobject. ...
从应用的角度,很多问题都可以归结为寻找关键要素(变量/random variable)之间的关系(函数/概率):已知一些观测点(数据,可以看成function graph上的有误差的点,或samples from a joint distribution),如何推测underlying unknown function/distribution。从这句话可以看出,对同一个问题可以有deterministic和stochastic两种建模(...
接下来我们将注意力放在这样的信道上:在离散时间连续无记忆信道 (定义 9.4) 的基础上,我们进一步要求信道的噪声是可加 (additive) 的 Gaussian 白噪声 (white noise),且采用平均功率约束。具体而言:对于时刻 i=1,2,\ldots, ,信道输入为 X_i ,那么信道输出就是 ...
To generate repeatable white Gaussian noise samples, do one of the following: Userng(seed) before calling theawgnfunction to generate repeatable random noise. Provide a staticseedvalue as an input toawgnexcept when the input is adlarrayobject. ...
Detection in Complex-Valued White Gaussian Noise (Coherent Samples) The NP detector for complex-valued signals is similar to that discussed in Source Localization Using Generalized Cross Correlation. In addition, the function makes these assumptions: The variance of the complex-valued Gaussian random va...