Description: A new blind adaptive multiuser detection scheme based on a hybrid of Kalman filter and
subspace estimation is proposed. It is shown that the detector can be expressed as an anchored
signal in the signal subspace and the coefficients can be estimated by the Kalman filter using only
the signature waveform and the timing of the desired user.-A new blind adaptive multiuser detection s cheme based on a hybrid of the Kalman filter and subs pace estimation is proposed. It is shown that th e detector can be expressed as an anchored signa l in the signal subspace and the coefficients ca n be estimated by the Kalman filter using only th e signature waveform and the timing of the desir ed user. Platform: |
Size: 389120 |
Author:rifer |
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Description: We address the problem of blind carrier frequency-offset (CFO) estimation in quadrature amplitude modulation,
phase-shift keying, and pulse amplitude modulation
communications systems.We study the performance of a standard
CFO estimate, which consists of first raising the received signal to
the Mth power, where M is an integer depending on the type and
size of the symbol constellation, and then applying the nonlinear
least squares (NLLS) estimation approach. At low signal-to noise
ratio (SNR), the NLLS method fails to provide an accurate CFO
estimate because of the presence of outliers. In this letter, we derive
an approximate closed-form expression for the outlier probability.
This enables us to predict the mean-square error (MSE) on CFO
estimation for all SNR values. For a given SNR, the new results
also give insight into the minimum number of samples required in
the CFO estimation procedure, in order to ensure that the MSE
on estimation is not significantly affected by the outliers. Platform: |
Size: 1265664 |
Author:吴大亨 |
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Description: 基于卷积信号的MIMO系统盲信号估计，运用卷积的方法进行盲信道估计-Convolution-based MIMO system, blind signal signal is estimated using the method of convolution-blind channel estimation Platform: |
Size: 31744 |
Author:张张 |
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Description: 就通信系统而言，涉及到有线信道及非卫星无线信道的问题时，信道不再可以看成为恒参信道，信号往往是通过未知信道传播，通常把这样的信道称为盲信道。 本源代码对盲信道的参数进行估计，利用matlab仿真，对做盲信道的工程人员有一定的借鉴价值。-On communications systems, related to non-cable channels and the issue of satellite radio channel, channel no longer can be seen as a channel Constant reference signal is often spread through unknown channels, usually channel such as the blind channel. Source code for the blind channel estimation of the parameters, the use of matlab simulation, on the blind channel to do the engineering staff from a certain value. Platform: |
Size: 2048 |
Author:Jackson |
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Description: The channel estimation algorithm is based on a subspace approach. The method works only for identifiable STBCs (excluding >=1-rate STBCs). See publication [1] for more detail about the algorithm and the identifiability conditions. The zip file contains three m files.
- space_time_coding.m (perform space time coding)
- subspace_channel_estimation_STBC.m (channel estimation)
- one_shot.m (show an example)
To use these files, extract the three files in the same folder. Then, call the script one_shot in the matlab command window.
Reference:
[1] Ammar, N. Ding, Z. "Blind Channel Identifiability for Generic Linear Space-Time Block Codes" IEEE Transactions on Signal Processing Volume 55, Issue 1, Jan. 2007 Page(s):202 - 217-The channel estimation algorithm is based on a subspace approach. The method works only for identifiable STBCs (excluding >=1-rate STBCs). See publication [1] for more detail about the algorithm and the identifiability conditions. The zip file contains three m files.
- space_time_coding.m (perform space time coding)
- subspace_channel_estimation_STBC.m (channel estimation)
- one_shot.m (show an example)
To use these files, extract the three files in the same folder. Then, call the script one_shot in the matlab command window.
Reference:
[1] Ammar, N. Ding, Z. "Blind Channel Identifiability for Generic Linear Space-Time Block Codes" IEEE Transactions on Signal Processing Volume 55, Issue 1, Jan. 2007 Page(s):202- 217 Platform: |
Size: 458752 |
Author:kamini gupta |
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Description: 基于时空处理的盲二维角度和频率的联合估计，对阵列信号处理的有一定的帮助-Blind space-time processing based on two-dimensional angle and frequency of joint estimation of array signal processing is certainly helpful Platform: |
Size: 1025024 |
Author:小红 |
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Description: 这是一篇很好的有关信道估计的文章，
可以用来快速的了解信道估计的基本内容-In this paper, a method for fast blind estimation
of DS-SS signal is proposed which aims at the
Direct-Sequence Spread- Spectrum (DS-SS) signals
with parameters unknown. Considering the
characteristic that Pseudo-Random noise (PN)
sequence modulates the information symbol, we
make use of the method based on the second-order
cyclic-cumulant to estimate the period of PN
sequence, and then the method of segmented
cross-correlation to estimate the synchronous start
bit between the information symbols and the PN
codes. On base of this, a method of multiple
subsection cross-correlation average is used to
estimate the PN sequence. Computer simulations
show that the method can work well on signals at
low signal noise ratio (SNR). Platform: |
Size: 103424 |
Author:renkill |
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Description: 这是一篇很好的有关信道估计的文章，
可以用来快速的了解信道估计的基本内容-and MAI induced by multiple-input, multiple-output channels. In particular, this article
reviews the typical inverse filter criteria (IFC) based algorithm, super-exponential algorithm,
and constant modulus algorithm along with their relations, performance, and improvements.
Several advanced applications of these algorithms are illustrated, including
blind channel estimation, simultaneous estimation of multiple time delays, signal-tonoise
ratio (SNR) boost by blind maximum ratio combining, blind beamforming for
source separation in multipath, and multiuser detection for direct sequence/code division
multiple access (DS/CDMA) systems in multipath. Platform: |
Size: 1144832 |
Author:renkill |
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Description: 经典的CPM信号的载波、符号率、调制指数联合盲估计的IEEE文章-Classic CPM signal carrier, symbol rate, modulation index of the IEEE Joint blind estimation of the article Platform: |
Size: 369664 |
Author:王威 |
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Description: 波达方向估计一直是信号处理的经典问题，本文利用盲子空间思想，新颖独特。-DOA Estimation of signal processing has been a classical problem, we use the blind subspace thinking, innovative and unique. Platform: |
Size: 182272 |
Author:三秦游子 |
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Description: 给出了OFDM在卫星通信中的系统框图并
在Simulink中仿真实现，利用改进的CMA恒模算法进行盲均衡处理，来去除时变卫星信道对信号的影响,基于4阶累积量的方法
将OFDM信号与其他调制类型信号区分开来-OFDM is given in the satellite communication system block diagram and Simulation in Simulink using the modified constant modulus algorithm CMA for blind equalization, to remove the time-varying satellite channel on the signals, based on 4-order cumulant method OFDM signals and other types of signal modulation to distinguish Platform: |
Size: 3167232 |
Author:赵亮 |
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Description: 利用现代谱估计中的AR 模型求取仿真噪声信号和真实噪声信号的模型参数，然后利用这些参数求得信号的功率谱图，通过功率谱图定性地描述主噪声源和次噪声源。在利用信号功率谱图定性描述噪声源后，进一步地利用曲线相似度和曲线关联度定量的识别主噪声源和次噪声源-Use of modern spectral estimation of AR model to strike a realistic simulation of the noise signal and noise model parameters, and then use these parameters obtained by the signal power spectrum, power spectrum qualitatively described by the main noise source and the second noise source. In the use of qualitative description of the noise signal power spectrum of the source, the further use of the correlation curve and the curve of quantitative similarity identification of the main noise source and the second noise source Platform: |
Size: 1024 |
Author:于勇凌 |
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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: 基于盲源分离的CDMA伪码估计程序，该程序能在不知道信道信息的情况下，对CDMA信号的扩频码进行盲估计。-The pseudo-code of blind source separation of CDMA-based estimation procedures, the program can not know the channel information, the spreading code of the CDMA signal blind estimation. Platform: |
Size: 4096 |
Author:付卫红 |
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Description: 周期长码的直接序列扩频信号伪码周期的盲估计。运用了信号功率谱二次处理方法。-Direct sequence spread spectrum signal pseudo-code cycle blind estimation of the long cycle code. The use of the secondary processing method of the signal power spectrum. Platform: |
Size: 258048 |
Author:尹落尘 |
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Description: 非周期直接序列扩频信号PN码盲估计，利用了子空间跟踪算法。-Aperiodic direct sequence spread spectrum signal blind estimation of PN code using a subspace tracking algorithm. Platform: |
Size: 631808 |
Author:尹落尘 |
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Description: 采用加权网络中节点强度和权重都是幂率分布的模型，有小波分析的盲信号处理，基于互功率谱的时延估计，用MATLAB实现的压缩传感，仿真效果非常好，虚拟力的无线传感网络覆盖。-Using weighted model nodes in the network strength and weight are power law distribution, There Wavelet Analysis Blind Signal Processing, Based on the time delay estimation of power spectrum, Using MATLAB compressed sensing, Simulation of the effect is very good, Virtual power wireless sensor network coverage. Platform: |
Size: 9216 |
Author:ainxer |
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Description: 有小波分析的盲信号处理，添加噪声处理，基于互功率谱的时延估计，已调制信号计算其普相关密度，包括 MUSIC算法，ESPRIT算法 ROOT-MUSIC算法。- There Wavelet Analysis Blind Signal Processing, Add noise processing, Based on the time delay estimation of power spectrum, Modulated signals to calculate its density Pu-related, Including the MUSIC algorithm, ESPRIT algorithm ROOT-MUSIC algorithm. Platform: |
Size: 7168 |
Author:ajpdaxy |
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Description: 利用matlab GUI实现的串口编程例子，有小波分析的盲信号处理，主同步信号PSS在时域上的相关仿真，包含收发两个客户端的链路级通信程序,用于信号特征提取、信号消噪，是一种双隐层反向传播神经网络，music高阶谱分析算法，基于互功率谱的时延估计。-Use serial programming examples matlab GUI implementation, There Wavelet Analysis Blind Signal Processing, PSS primary synchronization signal in the time domain simulation related, Contains two clients receive link-level communications program, For feature extraction, signal de-noising, Is a two hidden layer back propagation neural network, music higher order spectral analysis algorithm, Based on the time delay estimation of power spectrum. Platform: |
Size: 5120 |
Author:zhnfm |
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