Description: 基于DVB-T的二维插值信道估计和均衡。
在时域和频域对DVB传输码流进行信道估计和均衡。-based on the DVB-T's two-dimensional interpolation channel estimation and balanced. In the time domain and frequency domain for DVB transport stream for channel estimation and balanced. Platform: |
Size: 2048 |
Author:孙剑 |
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Description: 802.11a OFDM MATLAB仿真代码,包括OFDM映射,IDFT/DFT,同步(时间/频率同步)和信道估计,以及频率偏移的估计等一系列代码-802.11a OFDM MATLAB simulation code, including OFDM mapping, SINGLE/DFT, synchronous (time/frequency synchronization) and channel estimation, and the estimated frequency offset a series of code Platform: |
Size: 25600 |
Author:耿毅 |
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Description: ML Estimation of frequency, phase, and amplitude of a sinusoid from discrete time samples
MLEsim.m -ML Estimation of frequency, phase, and amplitude of a sinusoid from discrete time samples MLEsim.m Platform: |
Size: 1024 |
Author:老邢 |
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Description: Speech analysis and parameter extraction Short-term analysis, frames and windows Time-domain analysis: energy, zero-crossings, statistic parameters, autocorrelation
Frequency-domain analysis: spectra and spectrograms Cepstral analysis Linear prediction analysis Pitch and formant estimation
to run the application please tape menu
Platform: |
Size: 2220032 |
Author:栗子 |
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Description: 现在我终于找到了一份,它以FUNCTION的形式,再现了OFDM映射,IDFT/DFT,同步(时间/频率同步)和信道估计,以及频率偏移的估计等一系列代码.希望大家能从中得到你需要的东西.
-Now I finally found a copy of it to the form of FUNCTION, reproduces OFDM mapping, IDFT/DFT, synchronized (time/frequency synchronization), and channel estimation, as well as the frequency deviation of the estimated range of the code. I hope that everyone will be you need. Platform: |
Size: 35840 |
Author:周致远 |
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Description: The Yin algorithm was developed by Alain de Cheveigné of IRCAM-CNRS and Hideki Kawahara of Wakayama University. It allows for real-time continuous (for each sample) fundamental frequency estimation.
It features a very low error rate and few tuning parameters.
This implementation is a C++ template, with EMM support for faster processing. Developped in Visual C++ 6.0, but should compile with other compilers.-The Yin algorithm was developed by Alain de Cheveigné of IRCAM-CNRS and Hideki Kawahara of Wakayama University. It allows for real-time continuous (for each sample) fundamental frequency estimation.
It features a very low error rate and few tuning parameters.
This implementation is a C++ template, with EMM support for faster processing. Developped in Visual C++ 6.0, but should compile with other compilers. Platform: |
Size: 12288 |
Author:_tika_ |
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Description: 以FUNCTION的形式,再现了OFDM映射,IDFTDFT,同步(时间频率同步)和信道估计,以及频率偏移的估计等一系列代码.-To FUNCTION in the form of, reproduce OFDM mapping, IDFTDFT, synchronized (time and frequency synchronization), and channel estimation and frequency offset estimation and a series of codes. Platform: |
Size: 17408 |
Author:王琴 |
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Description: 数字驱动由于其控制算法的灵活性可以有效地提高科氏质量流量计的工作性能。针对数字驱动的启振问题，本文基于模型分析和实验仿真，提出了正负阶跃交替激励启振方法。该方法通过跟踪检测传感器自激输出信号相位进行正负阶跃交替激励，使流量管的振动幅值持续、可靠地快速增大，进而结合非线性幅值控制算法和频率估计，可使流量管启振时间大幅度地缩短，克服了传统启振方法的局限性。-Digital drive control algorithm because of its flexibility can improve the Coriolis mass flowmeter performance. Kai Chun for digital drive, this paper model-based analysis and experimental simulation, some positive and negative incentives Kai vibration method of alternating step. The method by tracking detection sensor output signal phase for self-excited alternating positive and negative step excitation, so that flow tube vibration amplitude sustained and reliable rapid increase can be combined with nonlinear amplitude control algorithm and frequency estimation, allows flow Kai Chun tube significantly reduced the time to overcome the limitations of traditional methods of the Kai oscillator. Platform: |
Size: 369664 |
Author:bonobo |
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Description: 频域不同导频密度的信道估计在被研究，并且在高低时延信道其信道估计被固定了导频分配时域。频域信道估计是基于插补，多项式的广义线性模型（或最小二乘法）和维纳滤波（或线性最小均方误差法）的方法。时域的信道估计是用线性插补完成的。我们通过测量在基于克拉克散射模型的瑞利衰落信道上并带有QPSK调制的粗误码率，已经比较了所有这些方案的结果。-Different pilot density in frequency domain channel estimate to research, and its high and low delay channel estimation channel was fixed allocation of time-domain pilot. Frequency domain channel estimation is based on interpolation, polynomial generalized linear model (or least squares) and the Wiener filter (or linear minimum mean square error method) method. Time domain channel estimation is done using linear interpolation. We are by measuring the scattering model based on Clark and Rayleigh fading channels with QPSK modulation bit error rate of crude, has compared the results of all these programs. Platform: |
Size: 2505728 |
Author:雨儿 |
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Description: An effecient algorithm has been proposed by
Schmidl and Cox for carrier frequency estimation in orthogonal
frequency-division multiplexing systems. The scheme is based
on the transmission of a training symbol composed of two
identical halves in the time domain. In this paper we extend
this algorithm by considering a training symbol composed of
L>2 identical parts. This makes it possible to achieve a better
accuracy at the cost of some increase in computational load. The
estimation range can be made as large as desired without the
need of a second training symbol, as required by the Schmidl
and Cox method. Platform: |
Size: 115712 |
Author:ashish |
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Description: 是一个对产生的高斯脉冲，进行时延和频移联合估计的一个很好的例子-Is a on the occasion of gaussian pulse, time delay and frequency shift joint estimation of a good example Platform: |
Size: 1024 |
Author:zhoubiquan |
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Description: 本次实验主要是对一个正弦信号加入高斯白噪声，然后通过傅里叶变换对正弦信号进行谱估计。最后要用matlab进行仿真，得到正弦函数的时域和频域波形，关键找出信噪比和正弦信号频谱的均方误差之间的关系。-The experiment is a sinusoidal signal which is to white Gaussian noise, then by Fourier transform of the sinusoidal signal spectrum estimation. Finally, using the matlab simulation, sine function in time domain and frequency domain waveforms. Platform: |
Size: 39936 |
Author:zjc |
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Description: 1. Linear Model Estimation: using time and frequency domain data
2. Nonlinear Black Box Model Estimation
3. Nonlinear Grey Box Model Estimation
Platform: |
Size: 13312 |
Author:Neda |
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Description: Orthogonal Frequency Division Multiplexing (OFDM)
systems are more sensitive to timing and frequency offsets than
single carrier systems. This Paper presents a method of joint time
and frequency synchronization for OFDM systems. The
synchronization technique is examined in both AWGN and
multipath fading environments. Compared with conventional
schemes, the proposed schemes can achieve smaller mean and mean
square error (MSE) obtained by simulations. Platform: |
Size: 3072 |
Author:monia |
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Description: 根据OFDM的时频特性,提出了一种新的空间测距方法.首先在时域对OFDM信号进行相关处
理,得到距离的粗估计,在粗估计的基础上,利用OFDM不同子载波数据之间的相位差,得到距离的精
确估计,根据精确估计的结果对粗估计的结果进行校正,从而得到最终的距离估计值.仿真结果表明,该
方法的测距精度比采用延迟锁定环的伪码测距方法至少提高了4倍,并且在信噪比大于20 dB时,可以
达到厘米级.
-According to the properties of OFDM in the time and frequency domains, a novel ranging
method in space is proposed. The coarse estimation of range can be obtained from the correlation of the
waveforms of OFDM signals in the time domain, and the fine estimation is obtained from the phase
differences between the sub-carriers in the frequency domain. The fine estimation is then adopted to
correct the coarse estimation, and the final estimation of range is achieved. Simulation results show that
the ranging accuracy of the proposed method is more than 4 times better than that of pseudo-code
ranging. Furthermore, the ranging accuracy is close to the centimeter level when the signal-to-noise ratio
is beyond 20 dB.
Platform: |
Size: 56320 |
Author:wangmingxiao |
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Description: 本书运用现代信号处理的理论，系统地介绍了分数阶Fourier变换的定义与特性，分数阶Fourier分析的基本原理与方法及其典型的应用。内容包括：分数阶Fourier变换的起源与发展、定义与基本特性；分数阶Fourier变换与其他时频分析工具的关系；分数阶Fourier变换的快速算法；分数阶Fourier变换在信号的检测与参数估计、雷达信号处理、时频域滤波以及通信信号处理中的应用。-The book is the use of modern signal processing theory, the system introduces the definition and characteristics of the fractional Fourier transform, fractional Fourier analysis of the basic principles and methods of its typical applications. Include: the origin and development of the fractional Fourier transform, the definition and basic characteristics fractional Fourier transform relationship with other time-frequency analysis tool fractional Fourier transform algorithm fractional Fourier transform in signal detection and parameter estimation The radar signal processing, time and frequency domain filtering and communication signal processing applications. Platform: |
Size: 5990400 |
Author:jj |
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Description: 基于matlab的OFDM仿真程序；
我再论坛找了很多OFDM的代码和文章,但总有遗患,为什么呢原因是大部分只有简单的映射,IDFTDFT变换等等,但主要的同步和信道估计去没有人提出来,甚至做出来..
现在我终于找到了一份,它以FUNCTION的形式,再现了OFDM映射,IDFTDFT,同步(时间频率同步)和信道估计,以及频率偏移的估计等一系列代码.-Based on the OFDM matlab simulation program I' ll find a lot of forums and articles OFDM code, but there are left suffering, why because most only simple mapping, IDFTDFT transformation, etc., but the main synchronization and channel estimation to no one proposed, and even do it .. and now I finally found a copy of it in the form FUNCTION, Reproduction of OFDM mapping, IDFTDFT, synchronous (time and frequency synchronization) and channel estimation, and the estimated frequency offset a series of code. Platform: |
Size: 26624 |
Author:qinxuechen |
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Search - time and frequency estimation