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Description: 数字信号处理的应用之一是从含有加性噪声的信号中去除噪声。现有被噪声污染的信号x[k]=s[k]+d[k],式中： 为原始信号d[k]为均匀分布的白噪声。
（1）分别产生50点的序列s[k]和白噪声序列d[k],将二者叠加生成x[k],并在同一张图上绘出x0[k],d[k]和x[k]的序列波形。
（2）均值滤波可以有效去除叠加在低频信号上的噪声。已知3点滑动平均数字滤波器的单位脉冲响应为h[k]=[1,1,1 k=0,1,2],计算y[k]=x[k]*h[k],在同一张图上绘出前50点y[k],s[k]和x[k]的波形，比较序列y[k]和s[k]。
-digital signal processing applications from one containing additive noise signal denoising. Existing noise pollution was a signal x [k] = s [k] d [k], where : of the original signal d [k] uniform distribution of white noise. (1) have 50 points each sequence s [k] and white noise sequence d [k] superposition of the two generation x [k] and the same is likely to draw a map x0 [k] d [k] and x [k] waveform sequence. (2) mean filter can effectively remove superimposed on the low-frequency noise on the signal. 3:00 known moving average digital filter unit for pulse response h [k] = [k = 0,1,2 1,1,1] Calculation y [k] = x [k]* h [k], the same is likely to draw a map before 50 y [k] s [k] and x [k] waveform sequence comparison y [k] s and [k].
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Size: 28672 |
Author: 魏臻 |
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Description: 该文件夹为Alamouti空时码的仿真程序，天线配置为2发2收。
主要程序的用途说明：
mainMIMO_OFDMA_2Tx_SER.m: 主程序，设置各种参数
gendata.m: 生成原始信息数据的程序
mod_2Tx_STBC_DFUSC.m：调制程序
gen_SUI_CorrCIR.m: 生成信道冲击响应的程序
get_perfectCE_2x2.m: 生成理想信道估计值的程序
chanSUI_corr_2x2.m: 发送信号通过SUI信道的程序
addAWGN_2x2.m: 添加高斯白噪声的程序
dem_DFUSC_2x2_STBC.m: 接收端解调主程序
ls_freq.m: 频域LS算法
ls_time_2x2.m: 时域LS算法
ML_decision.m: Alamouti最大似然检测算法-folder for the ACS code of space-time simulation program, antenna configuration for the two 2 admission. The main purpose procedures : mainMIMO_OFDMA_2Tx_SER.m : The main program, gendata.m set various parameters : Data generated primitive procedures mod_2Tx_STBC_DFUSC.m : gen_SUI_CorrCIR.m modulation procedures : Generation channel impulse response procedures get_perfectCE_2x2.m : Generation ideal channel estimation procedures chanSUI_corr_2x2.m : SUI transmitted signal through the channel addAWGN_2x2.m procedures : adding Gaussian white noise process dem_DFUSC_2x2_STBC.m : receiver demodulator main program ls_freq.m : frequency-domain algorithm ls_time_2x2.m LS : time-domain algorithm ML_decision.m LS : ACS Maximum Likelihood Detection Algorithm
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Size: 15360 |
Author: leon |
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Description: 复数噪声信号的产生，包括高斯白噪声和色噪声（滤波器可定义）-plural noise signal produced, including white Gaussian noise and color noise (Filter definable)
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Size: 1024 |
Author: cuixu |
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Description: 带有高斯白噪声的MSK的调制，连续相位调制以及误码率分析和眼图分析-with Gaussian white noise of MSK modulation, continuous phase modulation and error rate analysis and eye diagram analysis
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Size: 3072 |
Author: tangtan |
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Description: 产生零均值单位方差高斯白噪声的1000个样点,估计随机过程的自相关序列-units have zero mean Gaussian white noise variance to the 1,000-point, it is estimated that the random process autocorrelation sequence
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Size: 1024 |
Author: 吴森泉 |
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Description: 给语音加噪声的一个程序，可以给定需要加噪声的分贝数，程序会自动加载，选用的是随机白噪声。-Plus noise to the voice of a program, you can determine the needs to increase the number of decibels of noise, the program will automatically load, selected at random white noise.
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Size: 747520 |
Author: leafer |
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Description: 此文件包含有四个基于matlab源程序,可直接运行.其说明如下
P0305：模拟图像受高斯白噪声和椒盐噪声的影响 P0306：采用二维中值滤波函数medfilt2对受椒盐噪声干扰的图像滤P0307：采用MATLAB中的函数filter2对受噪声干扰的图像进行均值P0308：图像的自适应魏纳滤波 -This file contains four based on the matlab source code can be directly run. Its description is as follows P0305: analog image by Gaussian white noise and salt and pepper noise P0306: A two-dimensional median filtering function medfilt2 by salt and pepper noise to the image filter P0307: the use of MATLAB in filter2 function affected by noise interference images mean P0308: Image Adaptive Weiner Filter
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Size: 1024 |
Author: 张海涛 |
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Description: MATLAB代码,利用卡尔曼滤波实现加入白色噪声后的语音信号的增强.效果不错.-MATLAB code, the use of Kalman filter to achieve by adding white noise to enhance the voice signals. Good results.
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Size: 1024 |
Author: 李茉 |
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Description: 包括0均值和给定方差的高斯白噪声生成函数，以及复高斯白噪声生成函数-Including the 0 mean and given variance Gaussian white noise generating function, as well as complex Gaussian white noise generating function
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Size: 1024 |
Author: 秦丽 |
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Description: KALMAN滤波源程序，已知条件是给出状态方程和量测方程，过程噪声和量测噪声都是零均值的高斯白噪声-Kalman filtering source, known condition is given equation of state and measurement equations, the process noise and measurement noise are zero mean Gaussian white noise
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Size: 1024 |
Author: |
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Description: 产生一均匀分布的白噪声信产生均匀分布的白噪信号，使均值为0，功率为p号u(n),画出其波形，并检验其分布情况，产生零均值功率0.1且服从高斯分布的白噪声，sinc信号，chirp信号，线性卷积-Generate uniformly distributed one letter of the white noise generated uniformly distributed white noise signal, so that the mean is 0, the power for the p number u (n), draw their waveforms, and test its distribution, resulting in zero average power of 0.1 and subject to Gaussian distribution of white noise, sinc signals, chirp signals, the linear convolution
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Size: 8192 |
Author: 白璐 |
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Description: 应用自适应的干扰对消法去除高斯白噪声，程序中给出两种相关噪声产生的方法，第一种只有一个噪声是随机产生的，第二种两个噪声都是随机产生的。程序中给出了去噪后信噪比和均方差的增益。-Application of adaptive interference cancellation method to remove Gaussian white noise, the procedure given in the relevant noise generated by the two methods, first there is only one noise is randomly generated, the second two are randomly generated noise. Denoising process is given after the signal to noise ratio and mean square deviation of the gain.
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Size: 1024 |
Author: 李冰 |
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Description: 伪随机码发生器的VHDL实现
随着通信理论的发展，早在20世纪40年代，香农就曾指出，在某些情况下，为了实现最有效的通信，应采用具有白噪声的统计特性的信号。另外，为了实现高可靠的保密通信，也希望利用随机噪声。然而，利用随机噪声最大困难是它难以重复产生和处理。直到60年代，伪随机噪声的出现才使这一难题得到解决-Pseudo-random code generator for VHDL realize communication with the development of the theory, as early as the 20th century, 40 years, Shannon has pointed out that in some cases, in order to realize the most effective communications, should be used with the statistical properties of white noise signal . In addition, in order to realize highly reliable secure communication, but also wish to take advantage of random noise. However, the use of random noise the greatest difficulty is that it difficult to repeat the generation and treatment. Until 60 years, the emergence of pseudo-random noise so that this problem only be solved
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Size: 217088 |
Author: 张之晗 |
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Description: 这个Matlab程序计算在高斯白噪声（Additive White Gaussian Channel ）下BPSK调制中的错误概率。-The Matlab procedure in the Gaussian white noise (Additive White Gaussian Channel) under BPSK modulation of the error probability.
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Size: 43008 |
Author: 张涛 |
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Description: flch2bzsheg2.m白噪声产生程序-flch2bzsheg2.m white noise generation process
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Size: 1024 |
Author: huahua |
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Description: matlab中生成各种噪声的程序，包括brown噪声,pink噪声，白噪声等-matlab noise generated in a variety of procedures, including the brown noise, pink noise, white noise, etc.
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Size: 2284544 |
Author: 毛天纬 |
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Description: 描述了在高斯白噪背景下，对直扩信号进行检测所采用的方法和仿真流程。-Describes the Gaussian white noise in the background, on the Direct Sequence Spread Spectrum Signal detection methods and simulation process.
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Size: 246784 |
Author: 李骥东 |
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Description: 高斯白噪声的生成程序，是我做毕设时编的。大家可以参考！-Gaussian white noise generation process is complete for me to do when the series. Members can refer to!
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Size: 1024 |
Author: zn |
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Description: DSB-SC信号的生成与解调
1) 用离散（DSP）的方法生成DSB信号
2) 载波频率为150KHz，音频为500Hz和2000Hz的混合音。
3) 加入高斯白噪声
（4） 语音信号
的传输。
改变抽样频率和量化台阶大小，观察重建信号以及量化噪声信号的波形；对于语音信号主观评价声音质量的变化。
-DSB-SC signal generation and demodulation 1) Discrete (DSP) methods to generate DSB signal 2) the carrier frequency to 150KHz, audio 500Hz and 2000Hz for the mixed tone. 3) by adding white Gaussian noise (4) transmission of voice signals. Change the sampling frequency and quantization step size, to observe the reconstruction of signal and quantization noise signal waveform for subjective evaluation of the speech signal changes in sound quality.
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Size: 28672 |
Author: Ryan |
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Description: Compute Classical CFAR binary detection threshold for radar detection under additive Gaussian white noise criterion and specified false alarm probability.
-Compute Classical CFAR binary detection threshold for radar detection under additive Gaussian white noise criterion and specified false alarm probability.
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Size: 3072 |
Author: mid |
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