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Description: 《MIMO-OFDM关键技术的研究和完整仿真平台的建立》，建立了一个完整的MIMO-OFDM的仿真平台，为实际的硬件平台提供解决方案，给出性能评估。为建立这个完整的仿真平台，本文从MIMO-OFDM信号模型，提出系统实现的各个关键技术:帧同步和载波频偏估计、信道估计、采样同步和载波跟踪、空时/频编解码。- MIMO-OFDM key technology research and the establishment of a complete simulation platform , the establishment of a complete MIMO-OFDM simulation platform, for the actual hardware platform to provide solutions, given performance evaluation. For the establishment of the integrity of the simulation platform, this article from the MIMO-OFDM signal model, the system in all key technologies: frame synchronization and carrier frequency offset estimation, channel estimation, sampling synchronization and carrier tracking, space-time/frequency codecs.
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Author: 李继龙 |
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Description: OFDM仿真程序MATLAB
接收端采用的算法和程序流程与发送端发送的OFDM符号的帧结构有关系。具体的帧结构，以及定时估计，频偏估计，剩余误差跟踪的算法可参考算法说明文档-MATLAB simulation program OFDM receiver algorithm and procedures used in processes and the sending end to send the frame structure of OFDM symbols are. Concrete frame structure, as well as the timing estimation, frequency offset estimation, the remaining error tracking algorithm algorithm can refer to documentation
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Description: ofdm 介绍的文章，含原理与实例论证（含图） ，附件中是仿真代码，可单步跟踪查看，很好的学习资料-OFDM introduction of the article, including theory and examples of argumentation (including map), the annex is the simulation code, can single-step tracking of view, a very good learning materials
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Size: 74752 |
Author: 郭廷廷 |
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Description: I need estimation channel MIMO-OFDM because I do synchronous CFO and SFO by tracking algorithm Obelix-I need estimation channel MIMO-OFDM because I do synchronous CFO and SFO by tracking algorithm Obelix
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Size: 10240 |
Author: bachka |
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Description: OFDM 频率跟踪算法，用于DVB-H, CMMB 和OFDM demoduator 设计-Frequency tracking algorithm for DVB-H, design for OFDM demodualtor
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Size: 13312 |
Author: Wei Hua |
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Description: 接收端采用的算法和程序流程与发送端发送的OFDM符号的帧结构有关系。具体的帧结构，以及定时估计，频偏估计，剩余误差跟踪的算法可参考算法说明文档。-Receiver used algorithms and program flow with the sender sends the frame structure of OFDM symbols are. Concrete frame structure and timing estimates, frequency offset estimation, the remaining error tracking algorithm can reference algorithm documentation.
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Author: keven |
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Description: 该模型实现了一个通用的OFDM TX和RX，这是不依赖于任何特定的行业标准。该模型的目标是开发和研究不断（不是“突发”）载波同步和定时跟踪方案。该技术纳入然后可以扩展和修改，以标准的具体通讯套件。该模型采用了“收购”技术，它利用了循环前缀相关属性，以赶在试图完成罚款跟踪算法一帧的边界粗略的估计。该模型实现了一个16点64循环前缀的OFDM载波波形。在OFDM符号有16个飞行员，3后卫音（0，带边幅），并使用45 QAM的剩余数据流4。
这包括最新型的衰落信道，误码率计算，并改善控制回路动态。-This model implements a generic OFDM TX and RX, which is not tied to any particular industry standard. The objective of this model is to develop and explore a continuous (not “bursty”) carrier and timing tracking synchronization scheme. The techniques incorporated can then be extended and modified to suite specific communications standards. The model uses an “acquisition” technique that exploits the correlation properties of the cyclic prefix to get a rough estimate of the frame boundary before attempting to accomplish the fine tracking algorithms. The model implements a 64 carrier OFDM waveform with a 16 point cyclic prefix. The OFDM symbol has 16 pilots, 3 guard tones (0 amplitude at band edge) and uses 4 QAM for the 45 remaining data streams.
This latest model includes a fading channel, BER computation, and improved control loop dynamics.
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Author: zaaa |
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Description: In this paper, we present a novel data-based method for simultaneous Maximum Likelihood
(ML) symbol and carrier-frequency o畇et estimation in Orthogonal frequencydivision
multiplexing (OFDM) systems. Statistical properties introduced by the cyclic
pre痻, a guard space between OFDM symbols, provide su眂ient information about the
unknown parameters. It is shown that the redundancy introduced by this cyclic pre痻
allows the estimation to be performed without additional pilots. Simulations show that
the performance of the frequency estimator is applicable in a tracking mode while the
timing estimation can be used in an acquisition mode.
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Size: 512000 |
Author: ashish |
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Description: 一个OFDM符号128个有效符号，插入128个虚拟子载波
符号率（即有效数据率）fsymbol，而发送速率（需要包括虚拟子载波）2fsymbol
输入的数据需要2倍的发送数据率，以便进行内插，实现位定时跟踪，即4倍fsymbol采样率的调制信号
OFDM symbol Nfft=128 points
一个OFDM符号数据点 Nfft*2 = 256 ， Guard Interval点 ＝Ng*2=64
- a OFDM symbol 128 effective symbols, insert 128 virtual sub-carrier
symbol rate (i.e. valid data rate), and fsymbol sending rate (need to include virtual sub-carrier) 2fsymbol
input data need 2 times the sending data rate for interpolation, realize a timing tracking, namely fsymbol sampling rates four times the modulation signal
OFDM symbol Nfft = 128 points
a OFDM symbol of data points Nfft* 2 = 256, Guard Interval point = Ng* 2 = 64
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Author: fine |
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Description: 一个非常完整的ofdm程序。接收端采用的算法和程序流程与发送端发送的OFDM符号的帧结构有关系。包括具体的帧结构，以及定时估计，频偏估计，剩余误差跟踪的算法-Ofdm a very complete program. Receiver using the algorithm and program flow with the sender sends the frame structure of OFDM symbols are related. Including specific frame structure and timing estimation, frequency estimation, residual error tracking algorithm
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Size: 253952 |
Author: 刘雪芳 |
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Description: 频率同步是宽带OFDM系统中的关键技术，IEEE 802.11a 采用OFDM技术，利用其前导序列的重复结构，提出了一种分步的粗细频偏捕获与校正算法，同时为了补偿时域同步后的残余相差和适应信道的时变特性，还提出了一种基于频域导频的相位跟踪方案-Frequency synchronization is a key technology in the broadband OFDM systems, IEEE 802.11a uses OFDM technology, the use of the repetitive structure of the leader sequence, the thickness of a step frequency offset capture and correction algorithm, when the order to compensate at the same time domain synchronous residualthe difference between and adapt to the time-varying characteristics of the channel is also proposed based on frequency domain pilot phase tracking scheme
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Author: Chaos |
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Description: 该模型实现一个不依赖于任何特定的行业标准通用的连续同步OFDMOFDM模型TX和RX。这个模型的目的是开发和探索出一条连续的（而不是“突发”）的载波和定时同步跟踪计划。然后使用该技术可以扩展和修改特定通信标准。-This model implements a generic OFDM TX and RX, which is not tied to any particular industry standard. The objective of this model is to develop and explore a continuous (not “bursty”) carrier and timing tracking synchronization scheme. The techniques incorporated can then be extended and modified to suite specific communications standards. The model uses an “acquisition” technique that exploits the correlation properties of the cyclic prefix to get a rough estimate of the frame boundary before attempting to accomplish the fine tracking algorithms. The model implements a 64 carrier OFDM waveform with a 16 point cyclic prefix. The OFDM symbol has 16 pilots, 3 guard tones (0 amplitude at band edge) and uses 4 QAM for the 45 remaining data streams.
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Size: 330752 |
Author: 林真天 |
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Description: 正交的OFDM信道仿真，很好的资料，质量高的源代码-Orthogonal tracking algorithm code
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Size: 2048 |
Author: zw |
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Description: wolf calculated Lyapunov exponent, Partially achieved tracking speed iterative relaxation algorithm, Minimum mean square error MSE calculation algorithm.
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Size: 6144 |
Author: mietenfunpan
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Description: Partially achieved tracking speed iterative relaxation algorithm, It has a wealth of parameter options, Waveform data analysis.
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Size: 6144 |
Author: jingkengqun
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Description: Including the area, perimeter, rectangular, elongation, Calculation of growth, entry-level program grains Partially achieved tracking speed iterative relaxation algorithm.
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Size: 58368 |
Author: 付小杰
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Description: lbox, cordic matlab simulation algorithm, Partially achieved tracking speed iterative relaxation algorithm.
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Size: 151552 |
Author: 王焕
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Description: Example tracking mean cheap, Accuracy can reach 98%, Several new methods sar image denoising.
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Size: 150528 |
Author: 乔德理
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Description: Numerical solution of differential equations method, Automatic identification in the matlab environment the size of the connected area, Partially achieved tracking speed iterative relaxation algorithm.
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Size: 150528 |
Author: benhiefei
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Description: It draws on principal component analysis algorithm (PCA), Partially achieved tracking speed iterative relaxation algorithm, The signal spectral analysis and filtering.
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Size: 41984 |
Author: 高军
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