Description: A system simulation environment in Matlab/Simulink of RFID is constructed in this paper.
Special attention is emphasized on the analog/RF circuit.Negative effects are concerned in the system
model,such as phase noise of the local oscillator,TX-RX coupling,reflection of the environment,
AWGN noise,DC offset,I/Q mismatch,etc.Performance of the whole system can be evaluated by
changing the coding method,parameters of building blocks,and operation distance.Finally,some
simulation results are presented in this paper.
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Size: 2099122 |
Author:liulang |
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Description: 利用Matlab编程模擬phase noise對OFDM signal的影響,希望供大家参考,Error vector magnitude (EVM) -simulation using Matlab programming phase noise of the impact of the OFDM signal hope that for your reference, Error vector magnitude (EVM) Platform: |
Size: 1024 |
Author:蔡宗軒 |
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Description: A system simulation environment in Matlab/Simulink of RFID is constructed in this paper.
Special attention is emphasized on the analog/RF circuit.Negative effects are concerned in the system
model,such as phase noise of the local oscillator,TX-RX coupling,reflection of the environment,
AWGN noise,DC offset,I/Q mismatch,etc.Performance of the whole system can be evaluated by
changing the coding method,parameters of building blocks,and operation distance.Finally,some
simulation results are presented in this paper.
Platform: |
Size: 2099200 |
Author:liulang |
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Description: 雷达信号处理,针对现代雷达信号处理的主要方式，运用数字信号处理理论和 Matlab 软件研究雷达信号处理的仿真
问题。提出了一个仿真模型，该模型可以仿真雷达信号、热噪声与杂波的产生和雷达系统中信号的动态处理
过程。用 Matlab 对某脉冲压缩雷达信号处理系统进行了仿真，得到了雷达系统中各个处理点上的具体信号形
式，既包含幅度信息，又包含相位信息，该模型能较好地满足对雷达信号处理的仿真要求，显示了用 Matlab
仿真雷达信号处理系统的方便、快捷的优点。
-Radar signal processing, radar signal processing for the modern major mode of use of digital signal processing theory and Matlab software simulation of the radar signal processing problems. Proposed a simulation model, the model can be simulation of radar signals, thermal noise and clutter of the radar system in the generation and dynamic signal processing. Using Matlab for a pulse compression radar signal processing system simulation, radar systems have been various points on the treatment of specific signal form contains both amplitude information, but also contains the phase information, the model can better meet the needs of radar signal processing simulation requirements, shows the Matlab simulation using radar signal processing system convenient, fast advantages. Platform: |
Size: 157696 |
Author:wp |
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Description: 研究了利用混沌相变进行弱信号检测的理论及仿真试验( 对基于)振子初值敏感性检测弱信号的方法分
析后指出，过渡过程会影响检测性能，提出一种改进的弱信号检测方法( 对仿真输入噪声生成和仿真步长选择进行
研究后建立了仿真模型，在典型噪声背景下检测弱正弦信号( 实验结-Studied the use of chaotic phase transitions for weak signal detection theory and simulation test (based on) the sensitivity of oscillator initial value method of weak signal detection analysis pointed out that the transition process will affect the detection performance, an improved method of weak signal detection ( on the simulation input noise generation and simulation step size selection study established a simulation model, in a typical background noise detection of weak sinusoidal signal (experimental colorectal Platform: |
Size: 16384 |
Author: |
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Description: 研究了利用混沌相变进行弱信号检测的理论及仿真试验( 对基于)振子初值敏感性检测弱信号的方法分
析后指出，过渡过程会影响检测性能，提出一个猜数游戏，一种改进的弱信号检测方法( 对仿真输入噪声生成和仿真步长选择进行
研究后建立了仿真模型，在典型噪声背景下检测弱正弦信号( 实验结-Studied the use of chaotic phase transitions for weak signal detection theory and simulation test (based on) the sensitivity of oscillator initial value method of weak signal detection analysis pointed out that the transition process will affect the detection performance, make a guess the number of games, an improved weak signal detection methods (for simulation input noise generation and simulation step size selection study established a simulation model, in a typical background noise detection of weak sinusoidal signal (experimental colorectal Platform: |
Size: 5120 |
Author: |
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Description: FM 的仿真程序，同时加有噪声，还可以看仿真图像，通过修改可以进行相位调制仿真，-FM of the simulation program, plus there is noise at the same time, you can see simulation images, can be carried out by modifying the phase modulation simulation, Platform: |
Size: 2048 |
Author:李淳风 |
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Description: 分析了相位噪声对正交频分复用(OFDM)系统的影响,发现相位噪声不仅产生
通用相角错误(CPE),而且还会产生载波间干扰(ICI),这都使OFDM系统的性能急剧恶
化,因此必须对CPE和ICI进行校正.文中给出了基于MSE准则的CPE校正方法,考虑到
ICI干扰主要来源于相邻信道,进而提出了基于LMS法则的自适应相邻信道干扰消除方
法.整个算法简单高效.仿真结果表明,所提出的算法大大改善了OFDM系统的性能-Analysis of phase noise on the orthogonal frequency division multiplexing (OFDM) system, the impact of phase noise was found not only from the general phase angle error (CPE), but also generate inter-carrier interference (ICI), which are so dramatically the performance of OFDM system worse, it is necessary CPE and ICI correction. This paper gives guidelines for CPE-based MSE correction methods, taking into account ICI mainly come from the adjacent channel interference, then presents a rule-based LMS adaptive adjacent channel interference cancellation method. the algorithm is simple and efficient. The simulation results show that the proposed algorithm greatly improved the performance of OFDM systems Platform: |
Size: 44032 |
Author:sunkai |
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Description: 二相相移键控（BPSK）调制解调过程的MATLAB仿真实现。ASK、FSK、PSK这三种数字调制方式在抗干扰噪声能力和信号频谱利用率等方面，以相干PSK的性能最好，目前已在中、高速传输数据时得到广泛应用。-Binary phase shift keying (BPSK) modulation and demodulation process, MATLAB Simulation. ASK, FSK, PSK modulation in the three digital noise interference and signal spectrum efficiency, etc., to the best performance of coherent PSK, is now in the middle and high-speed transmission data are widely used. Platform: |
Size: 22528 |
Author:秋田 |
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Description: 为了使数字信号在有限带宽的高频信道中传输，必须对数字信号进行载波调制。就频带利用率和抗噪声性能（或功率利用率）两个方面来看， QPSK系统最佳。QPSK是利用载波的四种不同相位差来表征输入的数字信息，是四进制移相键控（QPSK）。本项目用MATLAB软件对四进制移相键控信号在AWQN信道中传输进行了建模和仿真，通过对仿真得到的误码率和理论误码率进行比较和分析，从而证明了MATLAB软件仿真QPSK调制解调的可行性。-In order to make the digital signal in the high-frequency channel of limited bandwidth transmission of digital signal carrier modulation. Two in terms of bandwidth efficiency and anti-noise performance (or power utilization), QPSK system the best. QPSK, four different phase characterized by the input digital information using carrier quaternary phase shift keying (QPSK). This project using MATLAB software quaternary phase shift keying signal channel transmission in AWQN modeling and simulation, to compare and analyze the error rate obtained by the simulation and theoretical bit error rate, thus proving the simulation of MATLAB software QPSK modulation and demodulation of feasibility.- Platform: |
Size: 3072 |
Author:黄兰凤 |
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Description: 用matlab模拟的kalman的低通滤波器，附带代码说明
某系统接收端接收到的信号为
y=4*cos(2*pi*310*t)+2*sin(2*pi*40*t)
(G) 发现此信号夹杂了一个正弦噪声noise= 4*cos(2*pi*310*t)，
请设计一个带阻滤波器将此噪声滤除，从而恢复原信号。
要求：
（1）请写出具体的MATLAB程序，并详细解释每条程序
（2）画出滤波前后信号的频谱图
（3）画出所设计滤波器的幅频和相频特性图，并写出具体参数-Low-pass filter with kalman matlab simulation, with code shows the signal received by the receiving end of a system y = 4* cos (2* pi* 310* t)+2* sin (2* pi* 40* t ) (G) was found in this sinusoidal noise signal is mixed with a noise = 4* cos (2* pi* 310* t), Please design a bandstop filter to filter this noise, thereby restoring the original signal. Requirements: (1) Please write specific MATLAB program, and explain in detail each program (2) Draw the spectrum before and after filtering the signal (3) filter is designed to draw the amplitude and phase frequency characteristics map and write specific parameters Platform: |
Size: 574464 |
Author:lbx |
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Description: 包括最后计算压缩图像的峰值信噪比和压缩效果的源码,在matlab R2009b调试通过，三相光伏逆变并网的仿真。- Including the final calculation of the compressed image peak signal to noise ratio and compression of the source, In matlab R2009b debugging through, Three-phase photovoltaic inverter and network simulation. Platform: |
Size: 5120 |
Author:王艳桥 |
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Description: 该代码针对滚动轴承故障振动信号呈现出非线性、非平稳性及噪声背景较强等特点，为了有效提取故障特征，使用的一种共振稀疏分解（Resonance-based sparse signal decomposition，RSSD）与小波变换相结合的振动信号特征提取技术的相关仿真实验程序和轴承数据分解程序。其中，共振稀疏分解是基于品质因子可调小波变换与形态分量分析的一种新的信号分解方法，与常规的基于频带划分的信号分解方法不同，它依据信号各分量的振荡形态不同对信号进行分解。
同时还提供了可调谐 Q 因子小波变换 (TQWT)工具箱，TQWT 是类似于理性扩张小波变换（RADWT），但 TQWT 不要求伸缩因子是合理的。
同时也提供了MATLAB遗传算法工具箱Genetic Algorithm Toolbox的相关程序以及使用说明。
-In order to effectively extract the fault characteristics, a resonant sparse decomposition (RSSD) is used to compare the characteristics of the wavelet transform with the wavelet transform phase. In this paper, the resonant vibration signal of the rolling bearing is characterized by non-linearity, nonstationarity and strong noise background. Combined with the vibration signal feature extraction technology related to the simulation of experimental procedures and bearing data decomposition program. Platform: |
Size: 5875712 |
Author:聂凯 |
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Description: 本设计主要对4PSK调制方式的信号，利用MATLAB的m文件进行最佳接收机的设计与仿真。对输入的叠加噪声的4PSK调制信号进行接收，利用相关解调器来实现信号解调，及最大似然准则来实现检测器。在相关解调器中，接收信号分别与基函数 和 相乘再积分。在检测器中，利用相位来判断输出，从而最终得到接收的数据。采用随机二进制数通过4PSK调制后叠加高斯白噪声再对设计的接收机进行测试，从测试的结果可看出，在信噪比大于-8dB时，误码率为0，说明该接收机较好的实现了抗噪声性能。-The design of the main 4PSK modulation mode of the signal, the use of MATLAB m file for the best receiver design and simulation. The 4PSK modulated signal of the input superimposed noise is received, and the demodulator is realized by the relevant demodulator, and the maximum likelihood criterion is used to realize the detector. In the associated demodulator, the received signal is multiplied by the basis function and multiplied by the basis function. In the detector, the output is judged by the phase, and finally the received data is obtained. Using the random binary number through 4PSK modulation after the superposition of white noise and then the design of the receiver to test the test results can be seen in the signal to noise ratio greater than-8dB, the bit error rate is 0, indicating that the receiver is better The realization of the anti-noise performance. Platform: |
Size: 21504 |
Author:kangyuxiang |
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Description: The digital simulation system using MATLAB to illustrate the
Quadrature Amplitude Modulation (QAM). QAM is a modulation scheme to convey two digital bit
streams which can be converted to symbol signals by modulating the amplitudes and the phase of two
carrier waves. First, we transmit a signal composed of two different 1024 bit streams and modulate
them using QAM. Next, at the receiver, we demodulate them using an orthogornality of two carriers
and matched filters. We also conduct the error analysis of two sampled signals in order to observe how
the probability of making bit errors changes depending on the inverse of Power Spectral Density (PSD)
of Additive White Gaussian Noise (AWGN). Platform: |
Size: 713728 |
Author:khang
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Description: 利用MATLAB集成环境下的M文件，编写程序来实现MSK的调制解调，并绘制出解调前后的时域和频域波形及叠加噪声时解调前后的时频波形，根据运行结果和波形来分析该解调过程的正确性及信道对信号传输的影响。通过这次课程设计进一步加深了我对最小二进制相移键控（MSK）调制解调性能的理解与掌握，同时将课堂上学到的理论知识用于实践。增强了我在模拟仿真方面的能力，为以后系统开发和通信系统仿真打下了良好的基础。(The use of MATLAB in the integrated environment of M file, write a program to achieve MSK modulation and demodulation, and draw out the time-frequency waveform before and after demodulation in time domain and frequency domain waveform and the superimposed noise before and after demodulation, to analyze the correct and the channel of the demodulation process of signal transmission according to the operation results and waveform. Through this course design, I further deepen the understanding and mastery of the minimum binary phase shift keying (MSK) modulation and demodulation performance, at the same time, the theoretical knowledge learned in the classroom is used in practice. It enhances my ability in analog simulation, and lays a good foundation for future system development and communication system simulation.) Platform: |
Size: 595968 |
Author:史宾
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Description: 调幅系统信号处理，获得调幅信号后，再仿真产生本地载波，采用相干解调的方法对调幅信号进行解调，恢复出消息信号。在此过程中，需要关注本地载波的相位偏移以及传输过程中的噪声对解调效果的影响。(The amplitude modulation signal is processed, then the amplitude modulation signal is obtained, then the local carrier is generated by simulation, and the amplitude modulation signal is demodulated by coherent demodulation, and the message signal is recovered. In this process, it is necessary to pay attention to the phase shift of the local carrier and the effect of noise on the demodulation effect during the transmission process.) Platform: |
Size: 4056064 |
Author:wqh123
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Description: 仿真伪相位编码连续波雷达的信号处理。设码频为 5MHz，伪码周期内码长为511，雷达载频为 10GHz，输入噪声为高斯白噪声，视频输入信噪比为 -15dB，相干 积累总时宽不大于0ms，给出回波视频表达式，脉压和FFT后的表达式；仿真给 出脉压和FFT 后的输出图形；通过仿真说明各级处理的增益，与各级时宽和带宽的关系；仿真说明脉压时多卜勒敏感现象和多卜勒容限及其性能损失（脉压主旁比与多卜勒的曲线）(Simulation of pseudo phase coded CW radar signal processing. Suppose the code frequency is 5MHz, the code length in the pseudo code period is 511, the radar carrier frequency is 10GHz, the input noise is Gaussian white noise, the video input signal-to-noise ratio is - 15dB, the total coherent accumulation time width is not more than 0ms, the echo video expression, the expression after pulse pressure and FFT are given; the pulse pressure and FFT are given by simulation After that, the output graph; the relationship between the gain of each level of processing and the time width and bandwidth of each level through simulation; the phenomenon of Doppler sensitivity, Doppler tolerance and its performance loss during pulse compression (the curve of the ratio of main to side of pulse pressure and Doppler)) Platform: |
Size: 862208 |
Author:fvck123 |
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Search - simulation of phase noise in matlab