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.
標簽： extremely PLL-based important drivers
上傳時間： 2014-11-25
上傳用戶：asddsd
Java Power Player, our slogan is "Download once, reproduce everywhere". Java Power Player is an high-performances player written with 100％ pure-Java source code. No native libraries. Download Now!
標簽： Player Power Java everywhere
上傳時間： 2014-01-20
上傳用戶：l254587896
VHDL（Very High Speed Integrated Circuit Hardware Description Language）硬件描述語言設計規范講解
標簽： Description Integrated Hardware Language
上傳時間： 2014-01-18
上傳用戶：dyctj
利用子帶結構壓縮和擴展高速動態深度圖像----Compressing and Companding High Dynamic Range Images with Subband Architectures
標簽： Compressing Companding Architectu Dynamic
上傳時間： 2015-12-22
上傳用戶：zhaoq123
image enhancement in frequency domain
標簽： enhancement frequency domain image
上傳時間： 2014-08-13
上傳用戶：小寶愛考拉
This directory contains example ADSPBF535 code, written in assembly, that changes the frequency and voltage using the push button switches on the board.
標簽： directory frequency contains assembly
上傳時間： 2014-01-03
上傳用戶：evil
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.
標簽： frequency-offset estimation quadrature amplitude
上傳時間： 2014-01-22
上傳用戶：牛布牛
VHDL（Very-High-Speed Integrated Circuit Hardware Description）
標簽： Very-High-Speed Description Integrated Hardware
上傳時間： 2015-12-30
上傳用戶：lht618
This paper investigates the design of joint frequency offset and carrier phase estimation of a multi-frequency time division multiple access (MF-TDMA) demodulator that is applied to a digital video broadcasting—return channel system via satellite (DVB-RCS). The proposed joint estimation algorithm is based on the interpolation technique for two correlation values in the frequency and phase domains. This simple interpolation technique can significantly improve frequency and phase resolution capabilities of the proposed technique without increasing the number of the correlation values. In addition, the overall block diagram of a digital communications receiver for DVB-RCS is presented, which was designed using the proposed estimation algorithms. Index Terms—Carrier phase estimation, DVB-RCS, frequency offset estimation, interpolation, joint estimation, MF-TDMA.
標簽： investigates estimation frequency carrier
上傳時間： 2015-12-30
上傳用戶：ls530720646
RBF of high order fundamental solution of 3D Helmholtz operator
標簽： fundamental Helmholtz operator solution
上傳時間： 2016-01-03
上傳用戶：wpwpwlxwlx
