Description: This paper investigates the design of joint frequency
offset and carrier phase estimation of a multi-frequency time division
multiple access (MF-TDMA) demodulator that is applied to
a digital video broadcasting—return channel system via satellite
(DVB-RCS). The proposed joint estimation algorithm is based on
the interpolation technique for two correlation values in the frequency
and phase domains. This simple interpolation technique
can significantly improve frequency and phase resolution capabilities
of the proposed technique without increasing the number of
the correlation values. In addition, the overall block diagram of a
digital communications receiver for DVB-RCS is presented, which
was designed using the proposed estimation algorithms.
Index Terms—Carrier phase estimation, DVB-RCS, frequency
offset estimation, interpolation, joint estimation, MF-TDMA.-This paper investigates the design of joint frequencyoffset and carrier phase estimation of a multi-frequency time divisionmultiple access (MF-TDMA) demodulator that is applied toa digital video broadcasting-return channel system via satellite (DVB-RCS). The proposed joint estimation algorithm is based onthe interpolation technique for two correlation values in the frequencyand phase domains. This simple interpolation techniquecan significantly improve frequency and phase resolution capabilitiesof the proposed technique without increasing the number ofthe correlation values. In addition, the overall block diagram of adigital communications receiver for DVB-RCS is presented, whichwas designed using the proposed estimation algorithms.Index Terms-Carrier phase estimation, DVB-RCS, frequencyoffset estimation, interpolation, joint estimation, MF-TDMA. Platform: |
Size: 500736 |
Author:吴大亨 |
Hits:
Description: 几个BOC 信号的分析例程，全球卫星导航系统将普遍采用BOC调制信号作为扩频测距信号，BOC信号自相关函数呈现多个相关峰，传统扩频接收机所用的延迟锁定环（DLL）无法对该信号正确地进行码相位的-Several BOC signal analysis routines, the global satellite navigation system will be widely used BOC modulation signal as a spread spectrum ranging signal, BOC signal auto-correlation function shows a number of correlation peak, the traditional spread-spectrum receiver using delay locked loop (DLL) the signal can not be correctly code phase Platform: |
Size: 7168 |
Author:andy |
Hits:
Description: 用Matlab产生一满足条件的窄带随机过程，编写子程序计算该随机过程的均值函数，自相关函数，功率谱，包络，包络平方及相位的一维概率密度画出相应的图形-Generated using Matlab to meet the conditions of a narrow-band random process, the preparation of random process subroutine to calculate the mean function, auto-correlation function, power spectrum, envelope, square envelope and phase probability density of the one-dimensional graphics to draw the corresponding Platform: |
Size: 1024 |
Author:qiwenchao |
Hits:
Description: 通过MATLAB软件；通过仿真得出性能曲线；从而比较bpsk的性能-The bit-error rate (BER) of binary phase-shift keying
in Rayleigh fading, using the Alamouti transmission scheme and
receiver selection diversity in the presence of channel-estimation
error, is studied. Closed-form expressions for the BER of log-likelihood
ratio selection, signal-to-noise ratio (SNR) selection, switchand-
stay combining selection, and maximum ratio combining are
derived in terms of the SNR and the cross-correlation coefficient
of the channel gain and its corrupted estimate. Two new selection
schemes, space–time sum-of-squares combining selection diversity
and space–time sum-of-magnitudes selection diversity, are
proposed and proven to provide almost the same performance as
SNR selection, but with much simpler implementations. The effects
of channel- Platform: |
Size: 340992 |
Author:刘小洋 |
Hits:
Description: 基于Processed histogram的人脸识别方法，方法简单，识别率高，参考文献“Face Recognition using processed histogram and phase only correlation”-Recognizing objects from large image databases, histogram based methods have proved simplicity and usefulness in last decade. Initially, this idea was based on color histograms that were launched by swain. This algorithm presents the first part of our proposed technique named as “Histogram processed Face Recognition”. Platform: |
Size: 4342784 |
Author:GJ |
Hits:
Description: An 8-QAM communications channel simulation in Simulink, constructed from a 16-QAM model and using an I,Q correlation receiver.
QAM (quadrature amplitude modulation) is a method of combining two amplitude-modulated (AM) signals into a single channel, thereby doubling the effective bandwidth. QAM is used with pulse amplitude modulation (PAM) in digital systems, especially in wireless applications. In a QAM signal, there are two carriers, each having the same frequency but differing in phase by 90 degrees (one quarter of a cycle, from which the term quadrature arises). One signal is called the ‘I’ signal, and the other is called the ‘Q’ signal. Mathematically, one of the signals can be represented by a sine wave, and the other by a cosine wave. The two modulated carriers are combined at the source for transmission. At the destination, the carriers are separated, the data is extracted from each, and then the data is combined into the original modulating information. -An 8-QAM communications channel simulation in Simulink, constructed from a 16-QAM model and using an I,Q correlation receiver.
QAM (quadrature amplitude modulation) is a method of combining two amplitude-modulated (AM) signals into a single channel, thereby doubling the effective bandwidth. QAM is used with pulse amplitude modulation (PAM) in digital systems, especially in wireless applications. In a QAM signal, there are two carriers, each having the same frequency but differing in phase by 90 degrees (one quarter of a cycle, from which the term quadrature arises). One signal is called the ‘I’ signal, and the other is called the ‘Q’ signal. Mathematically, one of the signals can be represented by a sine wave, and the other by a cosine wave. The two modulated carriers are combined at the source for transmission. At the destination, the carriers are separated, the data is extracted from each, and then the data is combined into the original modulating information. Platform: |
Size: 11264 |
Author:Griffin Wright |
Hits:
Description: xwch_test.m是主测试文件；biaoji.mat存放滤波器系数；xiangweicha.m用FFT计算相位差。
仿真框架为：
1.标记信号和双音信号续接作为发送信号；
2.对双音中一个频率分量的相位做偏移，再经过一个低通滤波器（引入线性相位，模拟收发不能同步测量现象）后，作为收到的信号；
3.用一个检测信号对收发信号进行相关运算；
4.画出收发信号以及相关处理后的信号。找出相关信号的那个尖点，从而推算出收发双音信号0相位点；
5. 输入0相位点位置，计算相对相位差。-xwch_test.m is the main test file biaoji.mat store filter coefficients xiangweicha.m calculated using FFT phase difference. Simulation framework: 1. Mark signals and then as a two-tone signal continued to send signals 2. On a two-tone frequency components of the phase shift to do, and then through a low pass filter (the introduction of linear phase, simulation can not simultaneously send and receive measuring the phenomenon), the as received signal 3. using a detection signal of the transceiver signal correlation operation 4. draw send and receive signals and related processed signal. Correlated signal of the cusp, which calculate the two-tone signal transceiver 0 phase point 5. Enter 0 phase point position, calculate the relative phase difference. Platform: |
Size: 51200 |
Author:曹艳平 |
Hits:
Description: 用matlab实现小波压缩和小波重构程序，并且通过相位相关对图像进行了拼接。-Using matlab wavelet compression and wavelet reconstruction implementation procedures, and phase correlation of the image by the stitching. Platform: |
Size: 261120 |
Author: |
Hits:
Description: 本文利用软件相移技术得到相互正交的参考正弦波信号；通过互相关算法，完成了软正交矢量型LIA相关器的具体实现；利用该方法实现了对微弱信号幅值和相位的检测，有效地抑制干扰，减少了硬件电路成本。通过Matlab仿真，验证了该算法具有一定的优越性。-In this paper, the software technology is orthogonal to the phase shift of the reference sine wave signal through cross-correlation algorithm to complete the implementation of soft orthogonal vector LIA correlator achieved using this method for detecting a weak signal amplitude and phase, effectively suppress the interference and reduce the cost of the hardware circuit. By Matlab simulation show that the algorithm has certain advantages. Platform: |
Size: 176128 |
Author:君子兰 |
Hits:
Description: 近场声源定位TDOA的MATLAB仿真，采用传统的相关算法CC和广义相关算法中的相位转换算法GCC_PHAT-Sound localization of MATLAB simulation, using the traditional algorithms of CC and phase transformation algorithm of generalized correlation algorithm GCC PHAT Platform: |
Size: 906240 |
Author:尹仁超 |
Hits:
Description: 重要参数的提取，应用小区域方差对比，程序简单，采用波束成形技术的BER计算，三相光伏逆变并网的仿真，相关分析过程的matlab方法，供做算法研究人员参考，使用高阶累积量对MPSK信号进行调制识别，用MATLAB实现动态聚类或迭代自组织数据分析。- Extract important parameters, Application of small area variance comparison, simple procedures, By applying the beam forming technology of BER Three-phase photovoltaic inverter and network simulation, Correlation analysis process matlab method, Algorithm for researchers to do reference, Using high-order cumulants of MPSK signal modulation recognition, Using MATLAB dynamic clustering or iterative self-organizing data analysis. Platform: |
Size: 8192 |
Author:aketm |
Hits:
Description: 非归零型差分相位调制信号建模与仿真分析 ，仿真效率很高的，插值与拟合，解方程，数据分析，仿真效果非常好，采用加权网络中节点强度和权重都是幂率分布的模型，详细画出了时域和频域的相关图，用MATLAB实现动态聚类或迭代自组织数据分析，多抽样率信号处理。- NRZ type differential phase modulation signal modeling and simulation analysis, High simulation efficiency, Interpolation and fitting, solution of equations, data analysis, Simulation of the effect is very good, Using weighted model nodes in the network strength and weight are power law distribution, Correlation diagram shown in detail the time domain and frequency domain, Using MATLAB dynamic clustering or iterative self-organizing data analysis, Multirate signal processing. Platform: |
Size: 12288 |
Author:arcfeuer |
Hits:
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 |
Hits:
Description: 用MATLAB实现动态聚类或迭代自组织数据分析，ICA（主分量分析）算法和程序，一种噪声辅助数据分析方法,研究生时的现代信号处理的作业，包括回归分析和概率统计，三相光伏逆变并网的仿真，欢迎大家下载学习，包括广义互相关函数GCC时延估计。- Using MATLAB dynamic clustering or iterative self-organizing data analysis, ICA (Principal Component Analysis) algorithm and procedures, A noise auxiliary data analysis method, Modern signal processing jobs when the graduate, Including regression analysis and probability and statistics, Three-phase photovoltaic inverter and network simulation, Welcome to download the study, Including the generalized cross-correlation function GCC time delay estimation. Platform: |
Size: 6144 |
Author:ytkxi |
Hits:
Description: 是一种双隐层反向传播神经网络，有均匀线阵的CRB曲线，相关分析过程的matlab方法，采用的是脉冲对消法，用MATLAB实现的压缩传感，抑制载波型差分相位调制。- Is a two hidden layer back propagation neural network, There ULA CRB curve, Correlation analysis process matlab method, It uses a pulse of consumer law, Using MATLAB compressed sensing, Suppressed carrier type differential phase modulation. Platform: |
Size: 6144 |
Author:kmfwga |
Hits:
Description: 包括广义互相关函数GCC时延估计，利用matlab针对图像进行马氏距离计算 ,可以得到很精确的幅值、频率、相位估计。- Including the generalized cross-correlation function GCC time delay estimation, Using matlab to calculate the Mahalanobis distance for the image, You can get a very accurate amplitude, frequency, phase estimation. Platform: |
Size: 6144 |
Author:ssbwvuna |
Hits:
Search - phase correlation using matlab