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Description: 高斯信道和噪声产生方法的简单程序，直接解压无密码-Gaussian noise channels and formation of simple procedures, without directly extracting passwords
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Size: 2283 |
Author: 王亚琛 |
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Description: 高斯信道和噪声产生方法的简单程序，直接解压无密码-Gaussian noise channels and formation of simple procedures, without directly extracting passwords
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Size: 2048 |
Author: 王亚琛 |
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Description: 格状编码调制是为解决卫星通信中信道噪声对接收的影响及带宽的限制而产生的，其将信道编码与调制很好的结合起来，并且能发挥各自的优点，这种方法在不增加带宽和相同的信息速率下可获得3~6dB的功率增益。-trellis coded modulation for satellite communications solutions Channel noise on the receiver bandwidth and the impact of the restrictions, it will channel coding and modulation good combine, and can play to their respective advantages, This method does not increase in the same bandwidth and speed of information available under the three-6dB gain power.
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Size: 7168 |
Author: GF |
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Description: AWGN信道下Turbo码误比特率模型
在实验基础上，通过曲线拟合等数学工具，得到加性高斯白噪声信道条件下，信道编码采用turbo码，通信系统端到端的误比特率经验模型。-AWGN channel Turbo code bit error rate model in an experimental basis, through curve fitting and other mathematical tools, to be additive white Gaussian noise channel conditions, channel coding using turbo codes, end-to-end communication system bit error rate empirical model.
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Size: 391168 |
Author: 子羽 |
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Description: 实现了信道编码，包括内编码（维特比），外编码，内译码，外译码，实现了近似的信道传输模型，并计算出信噪比等指标-Realize a channel coding, including within the coding (Viterbi), outside the coding, decoding within outer decoder to achieve a similar channel transmission model and calculate the signal to noise ratio and other indicators
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Size: 16384 |
Author: yinbo |
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Description: ofdm信道特性
Channel transmission simulator
Channel transmission simulator
％
％ inputs:
％ sig2 - noise variance
％ Mt - number of Tx antennas
％ Mr - number of Rx antennas
％ x - vector of complex input symbols (for MIMO, this is a matrix, where each column
％ is the value of the antenna outputs at a single time instance)
％ H - frequency selective channel - represented in block-Toeplitz form for MIMO transmission
％ N - number of symbols transmitted in OFDM frame
％
％ outputs:
％ y - vector of channel outputs (matrix for MIMO again, just like x matrix)
％ create noise vector sequence (each row is a different antenna, each column is a
％ different time index) note: noise is spatially and temporally white-channel characteristics of OFDM Channel transmission simulatorChannel transmission simulator inputs: sig2- noise variance Mt- number of Tx antennas Mr- number of Rx antennas x- vector of complex input symbols (for MIMO, this is a matrix, where each column is the value of the antenna outputs at a single time instance) H- frequency selective channel- represented in block-Toeplitz form for MIMO transmission N- number of symbols transmitted in OFDM frame outputs: y- vector of channel outputs (matrix for MIMO again, just like x matrix) create noise vector sequence (each row is a different antenna, each column is a different time index) note: noise is spatially and temporally white
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Size: 1024 |
Author: sunxu |
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Description: Signal processing theory plays an increasingly central role in the development of modern telecommunication and information processing systems, and has a wide range of applications in multimedia technology, audio-visual signal processing, cellular mobile communication, adaptive network management, radar systems, pattern analysis, medical signal processing, financial data forecasting, decision making systems, etc. The theory and application of signal processing is concerned with the identification, modelling and utilisation of patterns and structures in a signal process. The observation signals are often distorted, incomplete and noisy. Hence, noise reduction and the removal of channel distortion is an important part of a signal processing system. The aim of this book is to provide a coherent and structured presentation of the theory and applications of statistical signal processing and noise reduction methods.
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Size: 3710976 |
Author: jiezhao |
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Description: 基于Combs Pilot的OFDM信道估计，计算不同信噪比下的误码性能曲线，并画图-Combs Pilot-based channel estimation of OFDM, signal to noise ratio under different bit error performance curve, and drawing
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Size: 3072 |
Author: 韩聪 |
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Description: 双通道语音增强算法，消除环境噪声。采用归一化自适应方法，噪声抵消10dB，语音保持较好可懂度。-Dual-channel speech enhancement algorithm, to eliminate environmental noise. The use of normalized adaptive methods, noise cancellation 10dB, to maintain good voice intelligibility.
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Size: 186368 |
Author: chenziqiang |
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Description: 经典噪声估计，用于speech enhancement-noise estimation algorithm in speech enhancement
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Size: 3072 |
Author: yao wang |
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Description: A hardware Gaussian noise generator for channel code evaluation和A Gaussian noise generator for hardware-based simulations两篇关于高斯白噪声产生及信道估计的经典论文-A hardware Gaussian noise generator for channel code evaluation and A Gaussian noise generator for hardware-based simulations on the 2 white Gaussian noise and channel estimation of the classic papers
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Size: 790528 |
Author: zhengguang |
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Description: verilog实现awgn信道噪声的代码，支持可变的信噪比。利用移位寄存器来实现伪随机序列。-verilog code for implementation of awgn channel noise. support variable snr. use LSFR to implement the pseudo random sequence.
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Size: 10555392 |
Author: xiejin |
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Description: introduction to channel noise estimation, it is very important doc for application to LDPC
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Size: 102400 |
Author: yuzhiqiang |
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Description: This matlab file is used to generate noise signal which is added to the transmitted signal in an AWGN channel. Based on the SNR value the power of the noise is determined.
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Size: 1024 |
Author: muruga |
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Description: 提出一种有效的语音增强算法，该算法使用重叠相加FF-r滤波器进行谱幅度估计，给出噪声估计的两个均值参数，此参数适用于任何噪声．而且进行噪声估计无需检测语音间隙，无需VAD的运算过程，克服了单信道噪声
压缩算法的缺点．-An effective speech enhancement algorithm using the overlap-add FF-r filter in spectral amplitude estimation, given the noise mean estimate two parameters, this parameter applies to any noise. And no detection of speech to noise estimation space, without VAD computing process, overcome the single-channel noise suppression algorithm shortcomings.
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Size: 193536 |
Author: Decheng Yu |
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Description: TD-SCDMA系统联合检测中的信道估计、信道估计后处理、信道估计串行干扰消除后处理算法的源代码。其中，信道估计采用频域快速FFT法以减少运算量；后处理采用激活窗检测法，只保留激活用户的多径信息，其余置0，以达到降低干扰及噪声的目的；串行干扰消除可以消除多小区信道估计的干扰，以得到本小区的纯净信道估计结果。-TD-SCDMA system, joint detection of channel estimation, channel estimation and post-processing, channel estimation and post-processing the serial interference cancellation algorithm source code. Among them, frequency-domain channel estimation using fast FFT method to reduce computational complexity post-processing detection method used to activate windows, leaving only the active user' s multi-path information, the remaining set 0, in order to achieve the purpose of reducing interference and noise serial interference cancellation can be Multi-cell channel estimation to eliminate the interference in order to get the purity of the cell channel estimation result.
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Size: 5120 |
Author: 梦 |
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Description: OFDM下行的仿真1、产生要传输随机数；
2、进行调制；
3、串并转换；
4、进行IFFT操作（代码中有用到共轭对称向量的IFFT为实数进行简化计算）；
5、增加循环前缀；
6、并串转换；
7、输出前滤波；
8、增加信道噪声（加性高斯白噪声）；
9、接收端串并转换；
10、去除循环前缀；
11、进行FFT变换；
12、信号解调；
13、误比特率计算；
-OFDM downlink simulation 1, have to be transmitted random number 2, the modulation 3 series and transforms 4, the IFFT operation (code useful to conjugate symmetric vector of the IFFT of real numbers to simplify calculations) 5, the increase in circulating prefix 6, and string conversion 7, the output before the filter 8, increased channel noise (additive white Gaussian noise) 9, the receiver string and conversion 10, removal of cyclic prefix 11, the FFT transform 12 , the signal demodulation 13, bit error rate
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Size: 112640 |
Author: 刘洋 |
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Description: channel noise estimation for different modulators DQPSK, QAM in simulink
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Size: 20480 |
Author: Kris |
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Description: randn函数产生高斯白噪声信道，明显说明了randn函数的用法。-randn function generates white Gaussian noise channel, clearly illustrates the use randn function.
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Size: 2048 |
Author: 张文娟 |
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Description: 莱斯衰落信道的MATLAB程序，关于信道噪声分析的，有图像-Rice fading channel MATLAB program, on the channel noise analysis, there are images
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Size: 14336 |
Author: 乔文艳 |
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