Description: 使用VHDL設計一個適用於ETSI OFDM的時間和頻率同步處理器-use of a VHDL design ETSI OFDM applied to the time and frequency synchronization Processor Platform: |
Size: 1405564 |
Author:山姆大叔 |
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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: 使用VHDL設計一個適用於ETSI OFDM的時間和頻率同步處理器-use of a VHDL design ETSI OFDM applied to the time and frequency synchronization Processor Platform: |
Size: 1404928 |
Author:山姆大叔 |
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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: 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: Matlab的OFDM在多径Rayleigh信道下的同步
1. 假设频率已同步，设计OFDM一种具体的采用循环前缀进行时间同步方法，用Simulink进行仿真，画出比特信噪比与捕获概率的关系曲线。
2. 设时间已同步，设计OFDM一种具体的采用循环前缀进行频率同步方法，用Simulink进行仿真，画出比特信噪比与频率同步误差的关系曲线.-Matlab-OFDM in multipath Rayleigh channel synchronization 1. Assume that the frequency has been synchronized, the design of a specific OFDM cyclic prefix for time synchronization method, using Simulink simulation to depict the bit signal to noise ratio and the capture probability curve. 2. Set up time is synchronized to design a specific OFDM cyclic prefix for frequency synchronization method, using Simulink simulation to depict the bit signal to noise ratio and frequency synchronization error of the curve. Platform: |
Size: 21504 |
Author:the13thstone |
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Description: 一个基本的OFDM系统同步的仿真程序，包括时间同步和频率同步-A basic OFDM system simulation synchronization procedures, including time synchronization and frequency synchronization Platform: |
Size: 22528 |
Author:L |
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Description: 对OFDM系统中的时频同步算法进行了仿真，采用的是SC算法！-OFDM systems on time and frequency synchronization algorithm for the simulation, using the SC algorithm! Platform: |
Size: 2048 |
Author:eddy |
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Description: 一个ofdm的matlab程序，可以实现ofdm的频率同步和时间同步，可以运行，可以出图-a program of ofdm system in matlab,can execute the frequency synchronization and time synchronization,it can run Platform: |
Size: 1024 |
Author:邢昊 |
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Description: 一种基于PN训练序列的OFDM时频同步的新算法。通过构造倒序结构的同步训练序列-PN training sequence based on the OFDM time and frequency synchronization of the new algorithm. Structure by constructing a reverse synchronization of training sequences Platform: |
Size: 4096 |
Author:tianyu |
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Description: MIMO OFDM 技术将成为第4 代移动通信系统的关键技术, 因MIMO OFDM 对时间和频率偏移非常敏感,
因此MIMO OFDM 同步显得尤为重要。提出了一种新的MIMO OFDM 定时同步和频偏同步技术。以GCL 序列为基础设
计了一个新的符合MIMO OFDM 同步技术的导频序列, 通过对该导频序列进行2 次相关得到频率估计, 并将所得频率
运用到定时同步中, 得到更为准确的时间估计。仿真结果表明, 在相同的信噪比情况下, 该方法可以使得系统的误码
率和帧传送误码率相对传统方法得到进一步减小。-MIMO OFDM will become a key technology of the fourth generation mobile communications system. However, MIMO OFDM is
sensitive to the CFO and timing synchronization, so the MIMO OFDM synchronization technology is very important. This paper proposes an
accurate technique for timing and frequency synchronization of multiple input multiple output ( MIMO ) orthogonal frequency division
multiplexing ( OFDM) systems. The technique derives a new preamble signal based on GCL sequences, according with the MIMJO OFDM
synchronization. The carrier frequency offset ( CFO) estimation is obtained through taking double correlation operations on the preamble signal,
and used in the timing synchronization to gain accurate time estimation. The simulation results show that at the same SNR, the proposed method
can reduce the BER and the frame transmission BER of the system compared to the conventional method. Platform: |
Size: 408576 |
Author:蜡笔 |
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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: 2048 |
Author:monia |
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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: 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: 2048 |
Author:monia |
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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: 8192 |
Author:monia |
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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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Description: parie1: ICI Study generated by a synchronization error frequency in OFDM
partie2:Study of an Algorithm for Time Synchronization and Frequency in OFDM -parie1: ICI Study generated by a synchronization error frequency in OFDM
partie2:Study of an Algorithm for Time Synchronization and Frequency in OFDM Platform: |
Size: 102400 |
Author:takwa |
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Description: A Novel Time and Frequency Synchronization Scheme for OFDM Systems
A new training symbol is designed and a novel
time and frequency synchronization scheme for orthogonal frequency division multiplexing systems is proposed. The time synchronization is accomplished by using the symmetric conjugate of the training symbol in time domain and the frequency synchronization is finished by utilizing the good
autocorrelation of the training symbol in frequency domain.
The simulation results show that compared with conventional schemes, the proposed scheme gives a more accurate estimate of symbol timing and carrier frequency offset and provides a
wider acquisition range for the carrier frequency offset.1 Platform: |
Size: 321536 |
Author:Mohamed |
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Description: Time and Frequency Synchronization Techniques for
OFDM Systems operating in Gaussian and Fading
Channels: A Tutorial
The aim of this paper is to survey and compare
previous methods for Data-aided timing and frequency
synchronization of OFDM System. In the sequel, we propose a fast
and accurate FFT-based frequency offset estimation. The
synchronization techniques are examined in Gaussian andMultipath fading environments for comparison. The results of the
performance comparison are presented in terms of mean andmean-square error (MSE) obtained by simulations. The timing
offset estimator with best performance is chosen for system timingsynchronization. The FFT-based frequency offset estimation
method has significantly smaller MSE than others can beperformed using the same timing training symbol. Therefore,there is only one training symbol needed as preamble in whole
synchronization process.
Platform: |
Size: 340992 |
Author:Mohamed |
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Description: 基于IEEE802.11n MIMO-OFDM的时域同步和频域同步，经典算法和改进算法的对比，并且中英文均包含-Time domain based on IEEE802.11 n MIMO- OFDM synchronization and frequency synchronization, classic algorithms and the comparison of improved algorithm, and are included in both English and Chinese Platform: |
Size: 398336 |
Author:李玉 |
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Search - time and frequency synchronization ofdm