Description: 由matlab编写，带GUI界面。对bmp文件进行Vector Quantization。运行其中的VQ_GUI.m文件。
程序肯定是调试无误的。虽然比较耗时，但是最后能达到较好的图像效果和SNR。毕竟相比于VC，matlab运行较慢。
注意在点open打开了一个bmp文件过后，一定要先点VQ code，进行其他操作才能有效。-prepared by Matlab, with GUI interface. Bmp files to Vector Quantization. VQ_GUI.m running the paper. Debugging procedure is certainly unmistakable. Although it is quite time-consuming, but in the end will get better images and SNR. After all, compared to the VC, Matlab run slower. Attention to the point of open open after a bmp file, you must first point VQ code, other operations to be effective. Platform: |
Size: 68323 |
Author:王嘉宁 |
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Description: 由matlab编写，带GUI界面。对bmp文件进行Vector Quantization。运行其中的VQ_GUI.m文件。
程序肯定是调试无误的。虽然比较耗时，但是最后能达到较好的图像效果和SNR。毕竟相比于VC，matlab运行较慢。
注意在点open打开了一个bmp文件过后，一定要先点VQ code，进行其他操作才能有效。-prepared by Matlab, with GUI interface. Bmp files to Vector Quantization. VQ_GUI.m running the paper. Debugging procedure is certainly unmistakable. Although it is quite time-consuming, but in the end will get better images and SNR. After all, compared to the VC, Matlab run slower. Attention to the point of open open after a bmp file, you must first point VQ code, other operations to be effective. Platform: |
Size: 67584 |
Author:王嘉宁 |
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Description: 是matlab的源代码，功能是从snr到Eb_N0的转换。并带绘图功能-Is the matlab source code, function from SNR to Eb_N0 conversion. And with graphics Platform: |
Size: 1024 |
Author:wubaishan |
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Description: The program simulates alamouti s code with abitrary no.s of rx. Performance analysis can be drawn. (BER vs SNR) Platform: |
Size: 2048 |
Author:borizhang |
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Description: 设计一个四用户的扩频通信系统，扩频增益为N=16，采用Walsh码进行直接序列扩频，BPSK调制，无线信道为AWGN信道。在接收端进行解扩，解调，判决，通过仿真得到其中一个用户的误比特率与信噪比的仿真结果。-Designed a four-user spread spectrum communication system, spreading gain for N = 16, using Walsh code Direct Sequence Spread Spectrum, BPSK modulation, AWGN channel for the wireless channel. At the receiving end for despreading, demodulation, judgments, through the simulation to be one of a user' s bit error rate and SNR of the simulation results. Platform: |
Size: 5120 |
Author:杨世斌 |
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Description: A simple program for simulation of CDMA system with Walsh-Hadamard Code.
Result of this program is plot of BER vs SNR. Platform: |
Size: 26624 |
Author:Ardalan |
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Description: 课程设计两个程序：一：数据帧（程序每帧设置为400bit)在有扰信道传输时，采用Turbo码进行编译码。并仿真Log-MAP译码算法在不同迭代次数下的性能。
二：实现有扰信道中，不同信噪比下，采用MAP译码算法的Turbo码的性能。
以上各主程序均有做比较详细的程序注释
可直接运行turbo_main.m或LogMAP.m，稍等片刻即可观察到仿真结果
-two programs of Curriculum design : a: Data frames (each frame is setted to 400bit per frame) ,under a interferent channel transmission uses Turbo codes and decodes. including simulation of Log-MAP decoding algorithm performance under different number of its iterations.
2: To achieve the simulate the performance of MAP decoding algorithm for Turbo code,with different SNR that is decided by interferent channel.
Above the main program have to do a more detailed program notes
Can be directly run turbo_main.m or LogMAP.m, wait a moment to the simulation results can be observed Platform: |
Size: 346112 |
Author:陈侯海 |
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Description: CoSaMP，BP,OMP算法，比较它们在不同信噪比情况下的重构误差。-CoSaMP, BP, OMP algorithm and compare them with different SNR in the reconstruction error. Platform: |
Size: 1024 |
Author:wanghui |
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Description: This program is used to Simulate the performance of (n,k)Reed Solomon code in AWGN channel with plotting the results and compare with the theoretical performance of this code in AWGN channel. The program also print the SNRdB, absolute snr ,simulated probability of error, exact probability of error in each steps-This program is used to Simulate the performance of (n,k)Reed Solomon code in AWGN channel with plotting the results and compare with the theoretical performance of this code in AWGN channel. The program also print the SNRdB, absolute snr ,simulated probability of error, exact probability of error in each steps Platform: |
Size: 1024 |
Author:ghanim |
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Description: Digital Predistortion of Nonlieaner RF Power Amplifier with Memory Effects.
This M code simulates a DPD technique linearization for a AB-class nonlinear HPA with memory effects. Here we consider a memory polynomial predistorter to modeling nonlinearity characteristics and memory effects of a HPA.Simulation procedures divided into three separate parts:
1)Analog imperfection compensation for the direct upconversion transmitter
2)Design a DPD based on a memory polynomial predistorter
3)Performance evaluation via a number of parameters such as:EVM,PSD,SNR,
-Digital Predistortion of Nonlieaner RF Power Amplifier with Memory Effects.
This M code simulates a DPD technique linearization for a AB-class nonlinear HPA with memory effects. Here we consider a memory polynomial predistorter to modeling nonlinearity characteristics and memory effects of a HPA.Simulation procedures divided into three separate parts:
1)Analog imperfection compensation for the direct upconversion transmitter
2)Design a DPD based on a memory polynomial predistorter
3)Performance evaluation via a number of parameters such as:EVM,PSD,SNR,
Platform: |
Size: 19976192 |
Author:shahram |
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Description: This M Code simulate the effects of clipping and filtering on PAPR reduction in OFDM-based wireless standard.Also the performance of BER versus SNR of original OFDM signals with PAPR reduction based on clipping and filtering schemes over AWGN channel is evaluated.
The simplest and most widely used technique of PAPR reduction is to basically clip the part of signals that are outside the allowed region.Clipping methode introduces both in band distortion and out of band radiation into OFDM signals which degrades the performance including the BER and spectral efficiency.Filtering can reduce out of band radiation after clipping although it can not reduce in-band radiation distortion.However, clipping may cause some peak regrowth so that the signal after clipping and filtering will exceed the clipping level at some point.To reduce peak regrowth a repeated filtering and clipping operation can be used to obtain a desirable PAPR at a cost of computational complexity increase.
-This M Code simulate the effects of clipping and filtering on PAPR PAPR reduction in OFDM-based wireless standard.Also the performance of BER versus SNR of original OFDM signals with PAPR reduction based on clipping and filtering schemes over AWGN channel is evaluated.
The simplest and most widely used technique of PAPR reduction is to basically clip the part of signals that are outside the allowed region.Clipping methode introduces both in band distortion and out of band radiation into OFDM signals which degrades the performance including the BER and spectral efficiency.Filtering can reduce out of band radiation after clipping although it can not reduce in-band radiation distortion.However, clipping may cause some peak regrowth so that the signal after clipping and filtering will exceed the clipping level at some point.To reduce peak regrowth a repeated filtering and clipping operation can be used to obtain a desirable PAPR at a cost of computational complexity increase.
Platform: |
Size: 11770880 |
Author:shahram |
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Description: Matlab source code for a 4 x 4 MIMO system using Spacial multiplexing with Zero Forcing equalization. It calculates the BER vs SNR plot. Platform: |
Size: 1024 |
Author:Imran Rashid |
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Description: LDPC码是通过校验矩阵定义的一类线性码，为使译码可行，在码长较长时需要校验矩阵满足“稀疏性”，即校验矩阵中1的密度比较低，也就是要求校验矩阵中1的个数远小于0的个数，并且码长越长，密度就要越低。
-LDPC Coding with PSK modulation in Rayleigh fading channel
Most of the functions are built in matlab functions found in the comm. toolbox. These can also be easily configurable in the code to meet your requirements.
In the given code, set the SNR, codeRate, modulation order (psk) and Number of frames to be simulated.
Please feel free to contact me and let me know your comments.
Platform: |
Size: 2048 |
Author:胡发刚 |
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Description: This program stimulation AF cooperative diversity with matlabcode and earn SNR versus BER-This program stimulation AF cooperative diversity with matlabcode and earn SNR versus BER Platform: |
Size: 1024 |
Author:katy |
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Description:
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 noisy image by adding a Gaussian noise but under the condition of
having SNR=20dB by select the suitable value of variance for Gaussian noise formula.
Second step is performing wavelet denoising using the hard thresholding (Use the db 6 for four
levels) in the condition of finding the optimal thresholding value of T in terms of the SNR obtained. It
means that, we should find the highest SNR value by finding the suitable value for threshold. Then we
asked to do the same process but this time using soft thresholding.
Finally for the last part of question one, we should compare the results of the obtained SNR
with the recommendations of 3*sigma for the hard thresholding and 3/2*sigma for the soft
thresholding.-
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 noisy image by adding a Gaussian noise but under the condition of
having SNR=20dB by select the suitable value of variance for Gaussian noise formula.
Second step is performing wavelet denoising using the hard thresholding (Use the db 6 for four
levels) in the condition of finding the optimal thresholding value of T in terms of the SNR obtained. It
means that, we should find the highest SNR value by finding the suitable value for threshold. Then we
asked to do the same process but this time using soft thresholding.
Finally for the last part of question one, we should compare the results of the obtained SNR
with the recommendations of 3*sigma for the hard thresholding and 3/2*sigma for the soft
thresholding. Platform: |
Size: 91136 |
Author:jams1166 |
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Description: 通信系统设计，数字带通传输系统仿真Matlab代码
1. 比较BPSK与QPSK两种调制方式的误码率和误比特率性能（注意QPSK的误码率不同于误比特率），横坐标为SNR，并与理论曲线比较，分析解释仿真图。
2. 要求使用Matlab/C语言/Matlab-simulink中的任一种工具实现。
3. 代码中每个模块都要有详细注释说明。
-Communications systems design, digital bandpass transmission system simulation Matlab code
1. Comparison of BER QPSK and BPSK modulation methods and bit error rate performance (note QPSK error rate is different bit error rate), the horizontal axis is SNR, and compared with the theoretical curve, analysis and interpretation of simulation map.
2. requires the use of Matlab/C language/Matlab-simulink any one tool to achieve.
3. The code of each module must have a detailed explanatory notes. Platform: |
Size: 4096 |
Author:wang |
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Search - snr Code With MATLAB