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FFT
- 利用FFT估计正弦信号的频率,要估计一个叠加了高斯白噪声的正弦信号 的频率 ，可以通过对x(n)做傅里叶变换，得到频谱图，找出幅度的最大值对应的频率值 ，进行多次变换，求出均方误差 。改变信噪比SNR，通过仿真可以得出随着信噪比增加，均方误差减小。-Sinusoidal signal using FFT frequency estimation, to estimate a Gaussian white noise superimposed on the frequency of sinusoi
54379
- We investigate the case of independent Rayleigh faded paths between antenna elements and find that with high probability extraordinary capacity is available. Compared to the baseline n = 1 case, which by Shannon’s classical formula scales as one
SNR_Gain_for_SR
- Function to find SNR gain for a Stochastic Resonance detector and hence compute the optimal value of gamma, which is the quantizer threshold.
SNR_Gain_for_SSR
- Function to find SNR gain for a Suprathreshold Stochastic resonance detector and hence compute the optimal value of sigma, which is the optimal amount of noise to be added in order to obtain the highest SNR.
cbl
- 利用fft()进行快速傅立叶变换，得到频谱，画出正弦函数及其频谱 找出频谱中使得Y轴取最大值时的估计频率记为ft 加入白噪声，绘出信噪比和均方误差的关系曲线 - using fft () for fast Fourier transformation, spectrum, to draw the sine function and its spectrum find the spectrum
scr_20
- 完成20位并行数据的伪随机序列扰码，配合解码部分，提高数字信道的SNR。已经通过综合仿真，并正在具体项目中运行，未发现任何缺点。-Completion of the 20 data-parallel pseudo-random sequence scrambling code with the decoding part, improve the SNR of the digital channel. Through integrated simulation, and run specific
descr_20
- 完成20位并行数据的伪随机序列解码，配合扰码部分，提高数字信道的SNR。已经通过综合仿真，并正在具体项目中运行，未发现任何缺点。-Completion of the 20 pseudo-random sequence of parallel data decoding, with part of the scrambling code, and to improve the SNR of the digital channel. Through integrated simulation, an
ICUFN-2012
- The performance of a visible light communication system is greatly affected by LED layout setting. Received power and SNR can be increased or decreased by changing LED placement. However, there is trade-off between received power and SNR. This makes
ICUFN-Receiver-Power-and-SNR-optimization-for-Vis
- The performance of a visible light communication system is greatly affected by LED layout setting. Received power and SNR can be increased or decreased by changing LED placement. However, there is trade-off between received power and SNR. This makes
maep
- 在闭启键控通信系统中，两个假设下的观察信号模型为： 若两个假设的先验概率相等，且 , ,采用最小平均错误概率准则，试确定判决表达式，并求最小平均错误概率，利用MATLAB软件比较其理论值、仿真值。上述情况中，噪声 是均值为 ，方差为 的高斯噪声，仿真信噪比范围： ，间隔为 。 -In the closed Kai keying communication systems, the observed signal model under two assumptions: equal
denoisingWavelet
- Wavelet denoising For using this code need to use signal toolbox and general toolbox in your matlab In the first part of this assignment, we asked to obtain a (black-and-white) digital image of size 512 by 512 and then generate noi
snr
- 求图像信噪比的方法，可以借鉴着看看啊，x原图，m目标大小，n背景邻域大小，p、q目标型心位置-Find SNR method can learn a look ah, x artwork, m target size, n background neighborhood size, p, q core target position
signal
- 某信道， 输入为M元逻辑符号x：s0、s1、……sM-1 输出y为实数值 信道中发生如下事件： a=f(x)到实数的一一映射，当x=si时，a=iA，A为一给定的正实数 y=a+n，n为一服从N(0,s2)分布的独立随机变量（与x独立，且每次信道实现时的n均独立） 写出信道转移概率 若输入信道的各符号等概出现，求该信道的互信息量I(X Y) 画出不同信噪比下的互信息量变化的曲线，以M为参数，画一簇曲线（其中加上一条AWGN信道容量曲线作对比） 调整函数a
xinzaobizixiangguan
- 给原始语音加已知信噪比的高斯白噪声，随着信噪比不断变大，找出大概能使原始语音的波形特征不明显的信噪比范围。-Known to the original speech plus noise ratio of Gaussian white noise, with the signal to noise ratio becomes larger and larger, to find out about the original speech waveform characteristics to m
BPSK-Pass-color-pictures
- BPSK (Binary Phase Shift Keying) -二进制相移键控。BPSK使用了基准的正弦波和相位反转的波浪，使一方为0，另一方为1，从而可以同时传送接受2值(1比特)的信息。本程序采用simulink实现传输彩色照片。并求出了不同信噪比时的误码率以及原图和传输后的图片，以及两者差值-BPSK (Binary Phase Shift Keying) - Binary Phase Shift Keying. BPSK uses the reference sine wave