Jitter is extremely important in systems using PLL-based clock drivers. The effects of jitter range from not having any effect on system operation to rendering the system completely non-functional. This application note provides the reader with a clear understanding of jitter in high-speed systems. It introduces the reader to various kinds of jitter in high-speed systems, their causes and their effects, and methods of reducing jitter. This application note will concentrate on jitter in PLL-based frequency synthesizers.
标签： extremely PLL-based important drivers
上传时间： 2014-11-25
上传用户：asddsd
VB student result management system management system, brings the entire wrap the paper, has the very high reference value to the graduation project.
标签： management system the student
上传时间： 2015-12-03
上传用户：zxc23456789
IO 驱动 LCD , *** *** *** *** *** *** *** *** FILE NAME: IO_LCD MCU: HT46R22 MASK OPTION: WAKE-UP: PA6,PA7 PULL-HIGH: PA,PB,PC IIC: DISABLE PFD: DISABLE PWM: DISABLE WDT: ENABLE CLRWDT: ONE WDT CLOCK SOURCE: T1 WDT TIME OUT SELECT: WDT CLOCK SOURCE/32768 LVR: DISABLE OSC: CRYSTAL SYSVOLT: 3.0V SYSFRAG: 4000KHZ AUTHOR: RADOME HISTORY: 2005.08.
上传时间： 2014-12-21
上传用户：watch100
This my phd thesis for the WDM optical network optimization, which employs convex optimization techniques to solve the proposed integer problems. The computation complexity of my optimization framework is very low compared with other existing method and a performance bound is provided at the same time.
标签： optimization employs optical network
上传时间： 2015-12-27
上传用户：dongbaobao
使用Usb cy7c68013与DSP通信，现在已经能够很正确的传递（上传数据）了。 USB资源： 使用了Ep２，Ep６ Ep2, out auto Ep6, in auto FlagA－－－ PF3 FlagB－－－ PF6 FlagC－－－ PF1 需要 EP２ EMPTY EP6 FULL信号 因此 FlagA－－－ PF3 －－－ EP2空 －－－ ８ h FlagB－－－ PF6 －－－ EP6满 －－－ e h FlagC－－－ PF1 PINFLAGSAB＝0xE8 极性设置： PKTEND，EPEF，EPFF high 其他的低 因此 FIFOPINPOLAR = 0x23 包结束信号接在DSP 的 PF７ 上面。 以上结束06.11.28
上传时间： 2015-12-27
上传用户：youke111
Feature selection is a preprocessing technique frequently used in data mining and machine learning tasks. It can reduce dimensionality, remove irrelevant data, increase learning accuracy, and improve results comprehensibility. FCBF is a fast correlation-based filter algorithm designed for high-dimensional data and has been shown effective in removing both irrelevant features and redundant features
标签： preprocessing frequently selection technique
上传时间： 2014-01-19
上传用户：lindor
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.
标签： frequency-offset estimation quadrature amplitude
上传时间： 2014-01-22
上传用户：牛布牛
smsc911x 网卡驱动 This the users/programmers guide for the LAN911x Linux Driver The following sections can be found below * Revision History * Files * Features * Driver Parameters * Rx Performance Tuning * Tested Platforms * Rx Code Path * Tx Code Path * Platform Interface Descriptions
标签： 911x programmers 911 following
上传时间： 2014-12-02
上传用户：sssl
In this paper, we consider the problem of filtering in relational hidden Markov models. We present a compact representation for such models and an associated logical particle filtering algorithm. Each particle contains a logical formula that describes a set of states. The algorithm updates the formulae as new observations are received. Since a single particle tracks many states, this filter can be more accurate than a traditional particle filter in high dimensional state spaces, as we demonstrate in experiments.
标签： relational filtering consider problem
上传时间： 2016-01-02
上传用户：海陆空653
Rao-Blackwellised Particle Filters (RBPFs) are a class of Particle Filters (PFs) that exploit conditional dependencies between parts of the state to estimate. By doing so, RBPFs can improve the estimation quality while also reducing the overall computational load in comparison to original PFs. However, the computational complexity is still too high for many real-time applications. In this paper, we propose a modified RBPF that requires a single Kalman Filter (KF) iteration per input sample. Comparative experiments show that while good convergence can still be obtained, computational efficiency is always drastically increased, making this algorithm an option to consider for real-time implementations.
标签： Particle Filters Rao-Blackwellised exploit
上传时间： 2016-01-02
上传用户：refent
