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CyclonePLL
- Cyclone™ FPGA具有锁相环（PLL）和全局时钟网络，提供完整的时钟管理方案。Cyclone PLL具有时钟倍频和分频、相位偏移、可编程占空比和外部时钟输出，进行系统级的时钟管理和偏移控制。Altera® Quartus® II软件无需任何外部器件，就可以启用Cyclone PLL和相关功能。本文将介绍如何设计和使用Cyclone PLL功能。 PLL常用于同步内部器件时钟和外部时钟，使内部工作的时钟频率比外部时钟更高，时钟延迟和时钟偏移最小，减小或调整时钟
BlindEstimation
- This file contains a matlab file for blind carrier estimation which compute the phase and frequency offset of carrier due to Doppler shift.
OQPSK-Demodulator-projekt
- OQPSK Demodulation Project in Matlab. OQPSK means offset quadrature phase shift keying. an important modulation scheme in IEEE 802.15.4
sync-4-ofdm
- Joint maximum likelihood (ML)symbol-time and carrier-frequency offset estimator in orthogonal frequency-division multiplexing(OFDM) systems.-Joint maximum likelihood (ML)symbol-time and carrier-frequency offset estimator in orthogonal frequency-divi
SIG_1KHz
- 任意移相方波信号产生的VHDL代码。输入任意一个的相位偏移值就都能产生与参考方波有指定相位差的同频信号。-Square-wave signal of arbitrary phase shift generated by VHDL code. Enter any one of the phase offset can be generated on a designated phase with the reference square wave signal the same frequency
qpsk_simulink
- In this simulink model , QPSK modulation and demodulation is simulated .A square root raised cosine pulse shaped signal is modulated and given as input to the demodulator.The received signal is demodulated and given to the detector where it is mat
OFDM
- OFDM通信系统调制解调 包括数字前端处理、卷积编码、峰均值抑制、符号定时、频偏检测、信道估计、相位补偿等-OFDM modulation and demodulation communication system including digital front-end processing, convolution coding, the mean peak inhibition, symbol timing, frequency offset detection, channel estim
QAM_16
- 16QAM载波同步的影响仿真，针对有频偏，有相偏，无频偏相偏情况下的星座图。-16QAM carrier synchronization of simulation, for a frequency offset, a phase offset, phase offset without offset under the constellation.
bishecode
- 这个程序是用在LDPC加EM中的，自己编的有很好的性能，用来估计依稀未知的参数，比如相偏频偏之类的-This procedure is used in LDPC EM in Canada, his series have good performance, used to estimate the unknown parameters vaguely, such as phase offset of the class of partial
A_Millimeter-Wave_Circuit_Technique
- An inductive feedback technique increases the speed of resonant circuits by 62 , allowing operation near the of transistors. The technique leads to a fundamental oscillator operating at 128 GHz with a power dissipation of 9 mW and a phase noi
QAMXIANGP
- 本程序仿真了16QAM信号的载波相偏估计的HOS算法，整个算法实现分为（1）模拟发送端发送16QAM信号；（2）加入相偏来模拟通过信道后有相偏的测试信号；（3）利用HOS算法进行相偏估计与纠正；（4）输出星座图。-This procedure simulated a 16QAM signal carrier phase offset estimate of the HOS algorithm, the algorithm is divided into (1) analog transmitte
PN4
- 语言：VHDL 功能：该PN4序列的特点为将一个4位序列的前两位取异或，再让序列左移一位，用异或的结果作为序列的最后一位。序列周期是15，即15位伪随机序列。其中包括序列的产生模块和检测模块。对于误码检测，首先捕获相位。然后，规定测试的码的总个数，统计这些码中有多少个不能满足PN序列特点的，用计数器统计个数。如果发现误码过多，可能是相位失调，重新捕获相位，再进行误码检测。 仿真工具：modelsim 综合工具：quartus -Language: VHDL function:
B07_Ivanovs
- Continuous Phase Modulation (CPM) advantage compare with OQPSK (Offset Quadrant Phase Shift Key)
Blind-frequency-offset
- This is a file for Blind frequency offset estimation for overlap PCC-OFDM systems in presence of phase noise
Offset-Qpsk-Vs-Qpsk
- difference between quadrature phase shift keying and offset quadrature phase shift keying
Single-phase-inverter
- 单相逆变器并网控制和有源频率偏移孤岛检测-Single-phase inverter and network control and active islanding detection of frequency offset
shiyan
- OFDM中的信道均衡技术对于研究如何消除噪声干扰以及去除相位偏移的有着重要的作用-OFDM channel equalization techniques in the study of how to eliminate noise and to remove the phase offset has an important role in
Baseline-Estimation-Algorithm
- ：为有效减少大面积、多套干涉数据基线估计所需的地面控制点数量、降低接边处反演高程的差异，提出考虑干涉 相位偏置的犐狀犛犃犚区域网平差基线估计方法。采用中国科学院电子学研究所机载犐狀犛犃犚系统获取的多套干涉数据进行 了区域网平差基线估计试验，利用少量地面控制点完成了各套干涉数据的基线估计，减小接边处反演高程的差异，验证 该基线估计方法的有效性。-Baseline Estimation is important for deriving accurate heights in proce
A-new-calibration-algorithm
- 干涉参数定标对于机载双天线InSAR（Interferometric Synthetic Aperture Radar）系统的大面积高精度数字高程模型（DEM，Digital Elevation Model）获取具有重要意义。为了高效地进行干涉参数定标，本文从双天线InSAR获取DEM的基本原理出发，构建了一种新的考虑干涉相位偏置、基线长度和基线水平角三个干涉参数的外定标模型，设计了外定标模型的未知参数解算方案。利用GPS（Global Position System，全球定位系统）实测的高程控
cma_gaijin
- 此程序为改进后的cma算法，纠正了相位的偏移，对于研究cma算法的有帮助-This program improved cma algorithm to correct the phase offset for cma algorithm