Description: 线程同步是一个非常大的话题，包括方方面面的内容。从大的方面讲，线程的同步可分用户模式的线程同步和内核对象的线程同步两大类。用
户模式中线程的同步方法主要有原子访问和临界区等方法。其特点是同步速度特别快，适合于对线程运行速度有严格要求的场合。
在MFC中封装了CCritionSection等对象可以对共享资源进行锁定
-thread synchronization is a very big issues, including all aspects of the content. From the side, thread synchronization can be divided into user mode and kernel threads simultaneously targeting two types of thread synchronization. User mode thread synchronization method main atomic visit and the critical areas were used. Its characteristics are synchronous speed faster suited to the thread running speed strict requirements of the occasion. Packaging in the MFC CCritionSection and other objects can share resources lock Platform: |
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Author:lst |
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Description: 使用非线性动力学中的一维和二维耦合格子模型研究两个声光双稳系统的时空混沌同步.将驱动系统的输出以适当的比例耦合到响应系统并进行均衡 , 能实现两系统的时空混沌同步.利用计算最大条件Lyapunov指数 , 给出达到同步所需的最小耦合强度与系统参数的关系. 数值实验表明 ,在小噪声影响时仍然可以实现两系统的同步 , 此法具有一定的抗干扰能力.-The use of nonlinear dynamics of one-dimensional and two-dimensional lattice model of coupled two acousto-optic bistable system of space-time chaos synchronization. Will drive the output coupling ratio appropriate to the response system and a balanced, able to realize the two systems spatiotemporal chaos synchronization. the use of calculating the maximum Lyapunov index, given the minimum required to achieve synchronous coupling strength and system parameters. Numerical experiments show that the effect of small noise can still realize the synchronization of two systems, this method has certain anti- interference. Platform: |
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Author:xiaowang |
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Description: 扩展频谱技术有多种基本实现方式，本文主要介绍的是直接序列
扩频技术，特别针对二进制的PSK 调制解调技术，直接序列扩频系统的抗干
扰能力分析与直接序列扩频系统的同步方法，并进行了相关仿真分析-Spread spectrum technology has a wide range of basic ways, the introduction of this paper is a direct sequence spread spectrum technology, particularly for binary PSK modulation and demodulation techniques, direct sequence spread spectrum system, anti-jamming capability analysis and direct sequence spread spectrum system synchronization method and simulation analysis of the relevant Platform: |
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Author:luoluo |
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Description: 本文首先概述了OFDM 的原理、特征和关键技术，介绍了系统需要的几种同步。然后就同步误差对系统性能的影响进行了简单的分析，表明定时偏差和采样频率偏差将会引入码间干扰，载波频率偏差导致载波间干扰的发生。因此，在OFDM系统接收机中定时的确定、载波频率偏差和采样频率偏差的纠正是信号恢复的关键。之后对OFDM系统同步的几种实现方法进行了介绍，分析了各同步方法的性能。-The paper first outlines the principles of OFDM, features and key technologies, the system needs to introduce several synchronization. Synchronization error and then the impact on system performance for a simple analysis, show that the timing deviation and the sampling frequency deviation will introduce inter-symbol interference, the carrier frequency deviation led to the occurrence of ICI. Therefore, in OFDM system receiver to determine the timing, carrier frequency offset and sampling frequency offset correction signal to restore the key. After the OFDM system to achieve synchronization of several methods of introduction, an analysis of the performance of the synchronization method. Platform: |
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Author:dajinyu |
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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: |
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Author:the13thstone |
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Description: 各种同步实验及系统设计。包括：同步载波提取、帧同步信号提取实验、位同步信号提取实验以及衰落信道帧同步电路设计与实现和位同步的提取方法设计。-Various synchronization experiment and system design. Including: synchronous carrier extraction, frame synchronization signal extraction experiments, bit synchronization signal extraction experiment and fading channel frame synchronization circuit design and implementation and bit synchronization method of extracting the design. Platform: |
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Author:Kerwin |
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Description: OFDM载波同步方法，对开发第四代通信系统的人来说，非常有用。-OFDM carrier frequency synchronization method, on the development of fourth generation communication system of people, very useful. Platform: |
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Author:刘斌 |
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Description: 《数字通信》(第4版)是数字通信领域的一本经典教材,通过对概率论及随机过程的复习,详细介绍了数字和模拟信源编码、数字调制信号和窄带信号与系统的特征、加性高斯白噪声中数字通信的调制和最佳调制与检测方法、基于最大似然准则的载波相位估计和定时同步的方法、不同信道模型的信道容量及随机编码、带限信道的信号设计、受到符号间干扰恶化信号的解调与检测问题、自适应信道均衡、多信道与多载波调制、扩展频谱信号和系统、衰落信道上的数字通信。 -" Digital communication" (4th edition) is a digital communications of a classic textbook in the field, through the review process, the probability of randomly addressed, details of the digital and analog source coding, digital modulation signal and the narrowband signal and system characteristics, additive white Gaussian noise in digital communication modulation and the best modulation and detection methods, based on maximum likelihood criterion of carrier phase estimation and time synchronization method, different channel model of channel capacity and random coding, band-limited channel signal design by ISI worse signal demodulation and detection, adaptive channel equalization, multi-channel and multi-carrier modulation, spread spectrum signals and systems, fading channel digital communications. Platform: |
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Author:ng |
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Description: 功能：该程序用于仿真时间同步算法双向不等时间同步方法（TWT-UTD）与无时漂往返校时方法（RTT）。输入：节点间距离、钟漂，输出：两幅同步误差比对图。-Features: The program for the simulation time synchronization method of time synchronization algorithm for two-way ranging (TWT-UTD) and no drift from the time when the method of school (RTT). Input: the distance between nodes, clock drift, output: 2 synchronization errors of the map. Platform: |
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Author:许明 |
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Description: dsss有关的位同步帧同步数字锁相法实现位同步-dsss the bit synchronization method to achieve frame synchronization bit synchronous digital lock Platform: |
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Author:liufei |
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Description: 实现了liu和lv系统的非线性反馈同步，仿真文献为《一种实现混沌同步的非线性反馈方法》-Based on linear control theory, a chaos synchronization method is proposed in this paper. This method can achieve
chaos synchronization efficiently and the synchronization is overall asymptotic stable. Platform: |
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Author:胡燕 |
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Description: 多天线正交频分复用(MIMO-OFDM,Multiple-Input and Multiple-Output Orthogonal Frequency Division Multiplex)系统中,精确的符号定时同步可使接收端解调数据时消除载波频率偏移和符号间干扰。而由于MIMO空间信道复杂度较高,使得单天线OFDM系统的同步方法不能直接应用于MIMO-OFDM系统中。提出的两步同步方法首先利用时域导频作为第一步同步进行粗同步,然后利用循环交织前缀作为第二步同步对每一个MIMO-OFDM符号进行同步偏差调整。需要指出的是,两次同步过程均可以产生尖锐的相关峰,使得同步精度大为提高。-Accurate timing synchronization of symbol is important for MIMO-OFDM system,and it can eliminate the integral frequency shift of carrier and intersymbol interference.Two-step timing synchronization method is proposed in this thesis.First,the time-domain pilot is employed to obtain coarse timing synchronization,then the interleaved cyclic prefix and maximum likelihood estimation method are adopted to adjust the synchronization difference,through which the correlational characteristic of that window could be ... Platform: |
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Author:王睿 |
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