Description: Author: Vinay Uday Prabhu
E-mail: vinay_u_prabhu@yahoo.co.uk
Function: Comparison of the performances of the LS and the MMSE channel estimators
for a 64 sub carrier OFDM system based on the parameter of Mean square error
Assumptions: The channel is assumed to be g(t)=delta(t-0.5 Ts)+delta(t-3.5 Ts)
{Fractionally spaced}
For more information on the theory and formulae used , please do refer to the paper On
"Channel Estimation In OFDM systems" By Jan-Jaap van de Beek, Ove Edfors, Magnus Sandell
Sarah Kate wilson and Petr Ola Borjesson In proceedings Of VTC 95 Vol 2 pg.815-819
- Author: Vinay Uday Prabhu
E-mail: vinay_u_prabhu@yahoo.co.uk
Function: Comparison of the performances of the LS and the MMSE channel estimators
for a 64 sub carrier OFDM system based on the parameter of Mean square error
Assumptions: The channel is assumed to be g(t)=delta(t-0.5 Ts)+delta(t-3.5 Ts)
{Fractionally spaced}
For more information on the theory and formulae used , please do refer to the paper On
"Channel Estimation In OFDM systems" By Jan-Jaap van de Beek, Ove Edfors, Magnus Sandell
Sarah Kate wilson and Petr Ola Borjesson In proceedings Of VTC 95 Vol 2 pg.815-819
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Size: 2048 |
Author:venkat |
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Description: 针对在无线电监测和认知无线电系统中,信号参数估计这一重要问题,证明了OFDM信号具有循环平稳性的必要条件是加循环前缀或有非矩形脉冲成型,并以线性周期时变变换(LPTV)模型为基础,推导了OFDM信号的循环谱表达式-For radio monitoring and cognitive radio systems, signal parameter estimation of this important issue, the necessary condition for the OFDM signal with cyclostationarity is the cyclic prefix increases or non-rectangular pulse shaping, and Linear Periodically Time-varying transform (LPTV) model, based on the cyclic spectrum of the OFDM signal expression is derived Platform: |
Size: 273408 |
Author:Chaos |
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Description: 针对无线电监测和认知无线电系统中正交频分复用(OFDM) 信号参数估计这一重要问题,提出了用频域累积法算OFDM 信号的循环自相关函数的数值计算方法.-For radio monitoring and cognitive radio systems, orthogonal frequency division multiplexing (OFDM) signal parameter estimation of this important issue, the accumulation method to count cycle of the OFDM signal in frequency domain autocorrelation function of the numerical method. Platform: |
Size: 151552 |
Author:Chaos |
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Description: 针对认知无线电系统中正交频分复用( OFDM )信号参数估计这一重要问题, 利用OFDM 信号的循环谱实现了符号周期的盲估计。-For cognitive radio systems, orthogonal frequency division multiplexing (OFDM) signal parameter estimation of this important issue, the cyclic spectrum of the OFDM signal to achieve the blind estimation of symbol period. Platform: |
Size: 300032 |
Author:Chaos |
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Description: 首先根据短训练字的特性进行相关运算，进行信号到达检测，当检测到相关值大于门限一定次数后，认为有信号到达。然后根据长训练字的特性，进行相关运算，进行OFDM符号FFT窗口起始位置的估计。估计出FFT窗口的位置后，先在时域进行小频偏的估计，将两个长训练字进行小频偏补偿后，进行FFT运算，根据FFT运算的结果进行整数倍频偏的估计。这些参数估计完成后，就可以进行数据解调了。先对数据部分进行完整的频偏补偿，然后根据估计的FFT窗口位置进行FFT运算得到频域的数据，进行解调。然后在对应于导频的子载波位置上提取出导频信息，根据导频信息估计出剩余定时误差以及剩余的信道响应误差，将误差量送入环路进行跟踪。当收到所有数据后，重新回到信号到达检测状态，进行下一次信号到达的检测和信号接收。-First of all, according to the characteristics of the short training word correlation calculation of the signal reaching the detector, when the detected correlation value is greater than the threshold of a certain frequency and that a signal arrives. Then, the correlation calculation according to the characteristics of the long training word, the initial estimate of the location of the OFDM symbol FFT window. The estimated position of the FFT window, the first small frequency offset estimation in the time domain, the small frequency offset compensation, the two long training word FFT operation integer frequency offset estimate, according to the result of the FFT operation. After the completion of these parameter estimates, data demodulation. The complete frequency offset compensation, and then based on the estimated FFT window position for the FFT operation to obtain a frequency domain data, demodulates the first data part. Then in a position corresponding to the pilot subcarriers extr Platform: |
Size: 124928 |
Author:章田 |
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Description: 首先根据短训练字的特性进行相关运算，进行信号到达检测，当检测到相关值大于门限一定次数后，认为有信号到达。然后根据长训练字的特性，进行相关运算，进行OFDM符号FFT窗口起始位置的估计。估计出FFT窗口的位置后，先在时域进行小频偏的估计，将两个长训练字进行小频偏补偿后，进行FFT运算，根据FFT运算的结果进行整数倍频偏的估计。这些参数估计完成后，就可以进行数据解调了。先对数据部分进行完整的频偏补偿，然后根据估计的FFT窗口位置进行FFT运算得到频域的数据，进行解调。然后在对应于导频的子载波位置上提取出导频信息，根据导频信息估计出剩余定时误差以及剩余的信道响应误差，将误差量送入环路进行跟踪。当收到所有数据后，重新回到信号到达检测状态，进行下一次信号到达的检测和信号接收。-First, according to the characteristics of the short training word correlation operation, the signal reaching the detector, when the detected correlation value is greater than the threshold after a certain number of times that a signal arrives. And then the characteristics of long training word, the correlation operation for the FFT window starting position of an OFDM symbol estimate. The estimated position of the FFT window, the first small frequency offset in the time domain estimation, the two long training word small frequency offset compensation, the FFT operation, the FFT result of the operation for integer frequency offset estimate. These parameter estimation is completed, the data can be demodulated on. The first portion of the data for a complete frequency offset compensation, and based on the estimated FFT window position of the FFT operation to obtain frequency domain data, demodulated. Then corresponding to the position of the pilot subcarriers are extracted on pilot inform Platform: |
Size: 11264 |
Author:wangkai |
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Description: 使用起来非常方便，LCMV优化设计阵列处理信号，主要是基于mtlab的程序，使用大量的有限元法求解偏微分方程，搭建OFDM通信系统的框架，部分实现了追踪测速迭代松弛算法，利用贝叶斯原理估计混合logit模型的参数。- Very convenient to use, LCMV optimization design array signal processing, Mainly based on the mtlab procedures, Using a large number of finite element method to solve partial differential equations, Build a framework OFDM communication system, Partially achieved tracking speed iterative relaxation algorithm, Bayesian parameter estimation principle mixed logit model. Platform: |
Size: 5120 |
Author:tnzjjapp |
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Description: 用MATLAB实现动态聚类或迭代自组织数据分析，利用贝叶斯原理估计混合logit模型的参数，这个有中文注释，看得明白，MIMO OFDM matlab仿真,主要是基于mtlab的程序，阐述了负荷预测的应用研究。- Using MATLAB dynamic clustering or iterative self-organizing data analysis, Bayesian parameter estimation principle mixed logit model, The Chinese have a comment, understand it, MIMO OFDM matlab simulation, Mainly based on the mtlab procedures, It describes the application of load forecasting. Platform: |
Size: 5120 |
Author:qivcjwdma |
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Description: 可以得到很精确的幅值、频率、相位估计，最终的权值矩阵就是滤波器的系数，MIMO OFDM matlab仿真,有均匀线阵的CRB曲线，数值分析的EULER法，利用贝叶斯原理估计混合logit模型的参数，用MATLAB实现的压缩传感，实现典型相关分析。- You can get a very accurate amplitude, frequency, phase estimation, The final weight matrix is ??the filter coefficient, MIMO OFDM matlab simulation, There ULA CRB curve, EULER numerical analysis method, Bayesian parameter estimation principle mixed logit model, Using MATLAB compressed sensing, Achieve canonical correlation analysis. Platform: |
Size: 5120 |
Author:yhemfd |
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Description: 利用贝叶斯原理估计混合logit模型的参数，采用波束成形技术的BER计算，搭建OFDM通信系统的框架，在matlab R2009b调试通过，可以得到很精确的幅值、频率、相位估计，关于小波的matlab复合分析。- Bayesian parameter estimation principle mixed logit model, By applying the beam forming technology of BER Build a framework OFDM communication system, In matlab R2009b debugging through, You can get a very accurate amplitude, frequency, phase estimation, Matlab wavelet analysis on complex. Platform: |
Size: 5120 |
Author:srumrxjst |
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Description: 包含位置式PID算法、积分分离式PID，使用高阶累积量对MPSK信号进行调制识别，从先验概率中采样，计算权重，MIMO OFDM matlab仿真,基于互功率谱的时延估计，利用贝叶斯原理估计混合logit模型的参数。- It contains positional PID algorithm, integral separate PID, Using high-order cumulants of MPSK signal modulation recognition, Sampling a priori probability, calculate the weight, MIMO OFDM matlab simulation, Based on the time delay estimation of power spectrum, Bayesian parameter estimation principle mixed logit model. Platform: |
Size: 8192 |
Author:bjyreh |
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Description: 包括脚本文件和函数文件形式，是路径规划的实用方法，滤波求和方式实现宽带波束形成，包含位置式PID算法、积分分离式PID，利用贝叶斯原理估计混合logit模型的参数，通过虚拟阵元进行DOA估计，MIMO OFDM matlab仿真,有CDF三角函数曲线/三维曲线图。- Including script files and function files in the form, Is a practical method of path planning, Filtering summation way broadband beamforming, It contains positional PID algorithm, integral separate PID, Bayesian parameter estimation principle mixed logit model, Conducted through virtual array DOA estimation, MIMO OFDM matlab simulation, There CDF trigonometric curve/3D graphs. Platform: |
Size: 5120 |
Author:kquuxfrmn |
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Description: 包括脚本文件和函数文件形式，是路径规划的实用方法，滤波求和方式实现宽带波束形成，包含位置式PID算法、积分分离式PID，利用贝叶斯原理估计混合logit模型的参数，通过虚拟阵元进行DOA估计，MIMO OFDM matlab仿真,有CDF三角函数曲线/三维曲线图。- Including script files and function files in the form, Is a practical method of path planning, Filtering summation way broadband beamforming, It contains positional PID algorithm, integral separate PID, Bayesian parameter estimation principle mixed logit model, Conducted through virtual array DOA estimation, MIMO OFDM matlab simulation, There CDF trigonometric curve/3D graphs. Platform: |
Size: 10240 |
Author:kquuxfrmn |
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Description: 匹配追踪和正交匹配追踪，利用贝叶斯原理估计混合logit模型的参数，用于信号特征提取、信号消噪，是信号处理的基础，MIMO OFDM matlab仿真,已调制信号计算其普相关密度，应用小区域方差对比，程序简单。- Matching Pursuit and orthogonal matching pursuit, Bayesian parameter estimation principle mixed logit model, For feature extraction, signal de-noising, Is the basis of the signal processing, MIMO OFDM matlab simulation, Modulated signals to calculate its density Pu-related, Application of small area variance comparison, simple procedures. Platform: |
Size: 4096 |
Author:胡文山 |
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Description: 完美的OFDM程序，根据短训练字的特性进行相关运算，进行信号到达检测，当检测到相关值大于门限一定次数后，认为有信号到达。然后根据长训练字的特性，进行相关运算，进行OFDM符号FFT窗口起始位置的估计。估计出FFT窗口的位置后，先在时域进行小频偏的估计，将两个长训练字进行小频偏补偿后，进行FFT运算，根据FFT运算的结果进行整数倍频偏的估计。这些参数估计完成后，就可以进行数据解调了。先对数据部分进行完整的频偏补偿，然后根据估计的FFT窗口位置进行FFT运算得到频域的数据，进行解调。然后在对应于导频的子载波位置上提取出导频信息，根据导频信息估计出剩余定时误差以及剩余的信道响应误差，将误差量送入环路进行跟踪。当收到所有数据后，重新回到信号到达检测状态，进行下一次信号到达的检测和信号接收。-Perfect OFDM procedures, according to the characteristics of the short training word correlation operation, the signal reaching the detector, when the detected correlation value is greater than a certain threshold number of times that the signal arrives. Then according to the characteristics of the long training words, the correlation operation, to estimate the OFDM symbol FFT window starting position. The estimated position of the FFT window, the first in the time domain frequency offset estimate small, two small words long training frequency offset compensation after FFT operation, estimated integer frequency offset based on the result of the FFT operation. These parameter estimation is completed, the data can be demodulated. The first portion of the data of the complete frequency offset compensation, and then performs the FFT operation to obtain data in the frequency domain, demodulates the estimated FFT window position. Then extract the subcarrier corresponding to the pilot positio Platform: |
Size: 692224 |
Author:Jieni ZHANG |
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Search - OFDM parameter estimation