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Description: 同步 载波相位同步的过程是迫使本地振荡器与载波振荡器的使用在发射机在探测器在相位和频率的振荡过程被使用发射机。-carrier phase synchronization is the process of forcing the local oscillators in the detector to oscillate in phase and frequency with the carrier oscillator used at the transmitter
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Size: 956416 |
Author: zhangxiaoyu |
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Description: 介绍了ADF4360-8芯片的功能、内部结构、引脚排列及典型的应用电路及其评估板。ADF4360-8是集成的整数N合成器和压控振荡器（VCO）。芯片内嵌一个基准输入部分、N计数器和R计数器、相位频率检波器（PFD）和充电泵、多路复用器和锁定检波器、输入移位寄存器、控制锁存器、N计数锁存器、R计数锁存器。它可用于产生系统时钟，作为测试设备，用于无线局域网（LAN），作为闭路电视（CATV）设备。ADF4360-8EB1评估板可以让用户评估ADF4360-8频率合成器PLL的性能。
-Introduced the ADF4360-8-chip features, the internal structure of a typical pin and the application circuit and its evaluation board. ADF4360-8 is an integrated integer N synthesizer and voltage controlled oscillator (VCO). Input chip embedded part of a benchmark, N and R counters counter, phase frequency detector (PFD) and charge pump, and lock multiplexer detector, input shift register, control latch, N counter latch , R latch count. It can be used to generate system clock, as a test equipment for wireless local area network (LAN), as a closed-circuit television (CATV) equipment. ADF4360-8EB1 evaluation board allows users to assess the ADF4360-8 Synthesizer PLL performance.
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Size: 400384 |
Author: 庄乾章 |
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Description: An Analysis and Performance Evaluation of a Passive Filter Design Technique for Charge Pump PLL.pdf
This paper investigates the design of passive
loop filters for Frequency Synthesizers utilizing a Phase-
Frequency Detector and a current switch charge pump.-An Analysis and Performance Evaluation of a Passive Filter Design Technique for Charge Pump PLL.pdf This paper investigates the design of passive loop filters for Frequency Synthesizers utilizing a Phase-Frequency Detector and a current switch charge pump.
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Size: 129024 |
Author: 刘洋 |
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Description: 基于Matlab的伪码调相探测器系统仿真,毕业设计完整稿，适合做毕设的同学参考-Matlab code based on the pseudo-phase modulation detector system simulation, design of a complete draft graduation for students who do complete reference set
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Size: 841728 |
Author: 王男 |
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Description: 基于AD9954芯片和AD630芯片的简易阻抗测试仪，在系统中，用到两片AD9954，一片做为激励信号源，一片做为相敏检波输入信号，代码为系统主程序代码，AD9954驱动代码-AD630 chip based on the AD9954 chip and a simple impedance tester, in the system, use two AD9954, as an incentive signal source, a phase-sensitive detector as the input signal, this part of the code for the AD9954 chip driver code
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Size: 4096 |
Author: wangding |
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Description: In this simulink model , baseband binary detection is simulated .A rectangular pulse shaped signal is given as input to the detector.The received signal is matched filtered and down-sampled .The effects of symbol timing offset can be seen by varying the phase of down-sampling operation.The binary signal transmitted is recovered
at the detector output.-In this simulink model , baseband binary detection is simulated .A rectangular pulse shaped signal is given as input to the detector.The received signal is matched filtered and down-sampled .The effects of symbol timing offset can be seen by varying the phase of down-sampling operation.The binary signal transmitted is recovered
at the detector output.
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Size: 7168 |
Author: quail |
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Description: In this simulink model , baseband 8-ary PAM detection is simulated .A half-sine pulse shaped PAM signal is given as input to the detector.The received signal is matched filtered and down-sampled .The effects of symbol timing offset
can be seen by varying the phase of down-sampling
operation.The 8-ary PAM signal transmitted is recovered
at the detector output.
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Size: 8192 |
Author: quail |
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Description: In this simulink model , 16-QAM 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 matched filtered and down-sampled .The effects of symbol timing offset
can be seen by varying the phase of down-sampling
operation.The signal transmitted is recovered
at the detector output.-In this simulink model , 16-QAM 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 matched filtered and down-sampled .The effects of symbol timing offset
can be seen by varying the phase of down-sampling
operation.The signal transmitted is recovered
at the detector output.
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Size: 9216 |
Author: quail |
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Description: 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 matched filtered and down-sampled .The effects of symbol timing offset can be seen by varying the phase of down-sampling operation.The signal transmitted is recovered at the detector output.-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 matched filtered and down-sampled .The effects of symbol timing offset can be seen by varying the phase of down-sampling operation.The signal transmitted is recovered at the detector output.
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Size: 8192 |
Author: quail |
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Description: 以自适应线性组合器为时变谐波检测器的模型, 根据逆归最小乘自适应滤波算法较好的跟踪性能, 使之应用于时变谐波的跟踪检测。仿真表明该方法比以往的基于最小均方
自适应滤波算法的谐波幅值和相位参数的测定具有更好的跟踪效果。-Adaptive linear combiner with harmonic detector is too variable model, according to inverse normalized least square adaptive filter algorithm has better tracking performance, make application to track time-varying harmonic detection. Simulation shows that this method than LMS-based adaptive filtering algorithm for the harmonic amplitude and phase parameters of the determination with improved tracking.
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Size: 208896 |
Author: 韩一广 |
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Description: 采用ADS对环路中鉴相鉴频器和电荷泵进行联合仿真，优化整体性能。-By ADS on the loop phase frequency detector and charge pump joint simulation, optimizing the overall performance.
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Size: 21504 |
Author: weijianjun |
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Description: 通过分析8PSK 调制方式的载波恢复、定时恢复算法, 提出了一种适用于新一代数字卫星电视标准DVB S2
的全数字解调算法, 改进了相位频率检测( PFD) 算法以适合于8PSK 解调. 载波恢复采用频率检测( FD) 和相位频率
检测相结合的结构, 跟踪范围超过1 倍符号率. 采用Gardner TED 算法进行定时恢复.-By analyzing the 8PSK modulation carrier recovery, timing recovery algorithm is proposed for a new generation of digital television standard DVB S2 Satellite all-digital demodulation algorithm, improved phase-frequency detector (PFD) algorithm for 8PSK demodulation . carrier recovery using frequency detection (FD) and phase-frequency detector combined structure, tracking more than 100 times the symbol rate range. using Gardner TED algorithm timing recovery.
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Size: 199680 |
Author: 赵亮 |
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Description: 该算法通过设计180度相位翻转检测器，详细说明了相位翻转检测的原理和设计方法。简单实用-180 degrees by the algorithm design phase reversal detector, details the phase reversal of the detection principle and design method. Simple and practical
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Size: 2048 |
Author: 华电 |
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Description: 计算三相对称的代码。这可以被用来作为一个行和BLOB探测器。相位对称是照明和图像的对比度，对称不变测度。-Calculate the three-phase symmetrical code. This can be used as a line and BLOB detector. Phase symmetrical lighting and contrast of the image, the symmetric invariant measure.
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Size: 7168 |
Author: 王峰 |
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Description: 4FSK调制解调的matlab代码。采用相干解调的方式4FSK进行解调，与大多数方案的包络检波不同。基带信号用四种电平来表示，与调制信号相区分。-Demodulation matlab code 4FSK modulation. Coherent demodulation 4FSK demodulates Unlike most programs envelope detector,. The baseband signal is represented with four level distinguish phase with the modulation signal.
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Size: 6144 |
Author: 胡佳 |
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Description: This paper presents the simulation performance of the all-digital symbol timing recovery using the Gardner Timing Error Detector over π/4-DQPSK modulation. The open loop statistics, the S-curve and the normalized timing error variance, were investigated to show the stable tracking performance of the system. The symbol timing recovery has a second order loop transfer function, which was able to track down phase, and frequency offsets. Modulation was observed to have a performance of 2 dB lower from the theoretical BER curve.
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Size: 276480 |
Author: joel vilca |
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Description: 按照二维函数的特点和视觉机制,提出了用来捕捉纹理基元的纹理检测器函数,基于纹理检测器和扩展的小波变换,提出了基于能量分解的影像纹理多尺度分析方法,并按照神经动力学的侧抑制和端点抑制等理论,实现了对多尺度纹理特征的融合，这一多尺度分析方法直接将影像纹理能量在时间一尺度空间分解,包含了相位信息,避免了基于线性变换多尺度分解引起的能量与相位分离,为纹理分析提供了一个层次性的框架,有效提高了纹理的识别能力。-According to the characteristics of two-dimensional functions and visual mechanisms proposed to capture the texture primitive texture detector function, based on texture detector and extended wavelet transform, a multi-scale energy decomposition analysis method based on image texture and follow nerve and endpoint lateral inhibition kinetics of inhibition theory, to achieve the integration of multi-scale texture features, this multi-scale analysis methods directly to the image texture energy in a time scale spatial resolution, including the phase information, to avoid the multi-linear transformation based on energy scale decomposition caused by the phase separation of texture analysis provides a hierarchical framework, improve the ability to identify the texture.
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Size: 1391616 |
Author: guiyangyang |
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Description: Generation of ASK:
Amplitude shift keying - ASK - in the context of digital communication is a modulation process which imparts to a sinusoid two or more discrete amplitude levels 1. These are related to the number of levels adopted by the digital message. For a binary message sequence, there are two levels one of which is typically zero. Thus the modulated waveform consists of bursts of a sinusoid.
Demodulation of ASK:
ASK signal has a well defined envelope. Thus it is amenable to demodulation by an envelope detector. Some sort of decision-making circuitry is necessary for detecting the message. The signal, which is a binary sequence is recovered by using a correlator and decision making circuitry.
Matlab Program for Frequency shift keying
program for Quadrature Amplitude Modulation
Matlab program for phase shift keying
program for Quadrature Phase shift keying-Generation of ASK:
Amplitude shift keying - ASK - in the context of digital communication is a modulation process which imparts to a sinusoid two or more discrete amplitude levels 1. These are related to the number of levels adopted by the digital message. For a binary message sequence, there are two levels one of which is typically zero. Thus the modulated waveform consists of bursts of a sinusoid.
Demodulation of ASK:
ASK signal has a well defined envelope. Thus it is amenable to demodulation by an envelope detector. Some sort of decision-making circuitry is necessary for detecting the message. The signal, which is a binary sequence is recovered by using a correlator and decision making circuitry.
Matlab Program for Frequency shift keying
program for Quadrature Amplitude Modulation
Matlab program for phase shift keying
program for Quadrature Phase shift keying
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Size: 3072 |
Author: punitha sp |
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Description: 两相编码器应用程序,公制英制数据输出,在一种视频检测仪上使用-The two-phase encoder application, metricinch data output,Use on a video detector
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Size: 7168 |
Author: lb |
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Description: 这是一个人体呼吸频率检测的仿真程序，建立频率步进连续波雷达的回波模型，通过对回波数据进行ifft得到距离域一维像，通过回波相位相减的方法来获取人体呼吸频率-This is a human respiratory frequency detector simulation program, the establishment of a continuous stepped frequency radar echo model, through ifft echo data obtained the field one-dimensional image, to get through the human respiratory frequency echo phase subtraction method
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Size: 2048 |
Author: 李爽 |
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