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weixin_39821260 2019-09-18 10:30:29
这是一篇有关瞬时频率的文献,里面讲述了瞬时频率有关的基础知识还有相关的求解方法
相关下载链接://download.csdn.net/download/guomeina123/9329501?utm_source=bbsseo
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OpenH264 是思科公司发布的一个开源的 H.264 编码和解码器。编码器特性Constrained Baseline Profile up to Level 5.2 (4096x2304)Arbitrary resolution, not constrained to multiples of 16x16Rate control with adaptive quantization, or constant quantizationSlice options: 1 slice per frame, N slices per frame, N macroblocks per slice, or N bytes per sliceMultiple threads automatically used for multiple slicesTemporal scalability up to 4 layers in a dyadic hierarchySpatial simulcast up to 4 resolutions from a single inputLong Term Reference (LTR) framesMemory Management Control Operation (MMCO)Reference picture list modificationSingle reference frame for inter predictionMultiple reference frames when using LTR and/or 3-4 temporal layersPeriodic and on-demand Instantaneous Decoder Refresh (IDR) frame insertionDynamic changes to bit rate, frame rate, and resolutionAnnex B byte stream outputYUV 4:2:0 planar input解码器特性Constrained Baseline Profile up to Level 5.2 (4096x2304)Arbitrary resolution, not constrained to multiples of 16x16Single thread for all slicesLong Term Reference (LTR) framesMemory Management Control Operation (MMCO)Reference picture list modificationMultiple reference frames when specified in Sequence Parameter Set (SPS)Annex B byte stream inputYUV 4:2:0 planar output支持的操作系统Windows 64-bit and 32-bit (initial release is only 32-bit, 64-bit will follow soon)Mac OS X 64-bit (initial release does not include this target, will follow soon)Linux 64-bit and 32-bit (initial release is only 32-bit, 64-bit will follow soon)Android 32-bit (initial release does not include this target, will follow soon)iOS 64-bit and 32-bit (not supported yet, may be added in the future)支持的处理器Intel x86 optionally with MMX/SSE (no AVX yet, help is welcome)ARMv7 optionally with NEON (initial release does not include this target, will follow later)Any architecture using C/C fallback functions 标签:OpenH264
很实用的时频分析工具箱,包括短时傅里叶正反变换等,很好,很强大哦~~分享给大家,包括以下函数的源代码: % sigmerge - Add two signals with given energy ratio in dB. % % Choice of the Instantaneous Amplitude % amexpo1s - Generate one-sided exponential amplitude modulation. % amexpo2s - Generate bilateral exponential amplitude modulation. % amgauss - Generate gaussian amplitude modulation. % amrect - Generate rectangular amplitude modulation. % amtriang - Generate triangular amplitude modulation. % % Choice of the Instantaneous Frequency % fmconst - Signal with constant frequency modulation. % fmhyp - Signal with hyperbolic frequency modulation. % fmlin - Signal with linear frequency modulation. % fmodany - Signal with arbitrary frequency modulation. % fmpar - Signal with parabolic frequency modulation. % fmpower - Signal with power-law frequency modulation. % fmsin - Signal with sinusoidal frequency modulation. % gdpower - Signal with a power-law group delay. % % Choice of Particular Signals % altes - Altes signal in time domain. % anaask - Amplitude Shift Keyed (ASK) signal. % anabpsk - Binary Phase Shift Keyed (BPSK) signal. % anafsk - Frequency Shift Keyed (FSK) signal. % anapulse - Analytic projection of unit amplitude impulse signal. % anaqpsk - Quaternary Phase Shift Keyed (QPSK) signal. % anasing - Lipschitz singularity. % anastep - Analytic projection of unit step signal. % atoms - Linear combination of elementary Gaussian wave packets. % dopnoise - Generate complex Doppler random signal. % doppler - Generate complex Doppler signal. % klauder - Klauder wavelet in time domain. % mexhat - Mexican hat wavelet in time domain. % tftb_window - Window generation (previously window.m). % % Addition of Noise % noisecg - Analytic complex gaussian noise. % noisecu - Analytic complex uniform noise. % % Modification % scale - Scale signal using Mellin transform. % % % Processing Files % % Time-Domain Processing % ifestar2 - Instantaneous frequency estimation using AR2 modelisation. % instfreq - Instantaneous frequency estimation. % loctime - Time localization characteristics. % % Frequency-Domain Processing % fmt - Fast Mellin transform % ifmt - Inverse fast Mellin transform. % locfreq - Frequency localization characteristics. % sgrpdlay - Group delay estimation. % % Linear Time-Frequency Processing % tfrgabor - Gabor representation. % tfrstft - Short time Fourier transform. % % Bilinear Time-Frequency Processing in the Cohen's Class % tfrbj - Born-Jordan distribution. % tfrbud - Butterworth distribution. % tfrcw - Choi-Williams distribution. % tfrgrd - Generalized rectangular distribution. % tfrmh - Margenau-Hill distribution. % tfrmhs - Margenau-Hill-Spectrogram distribution. % tfrmmce - MMCE combination of spectrograms. % tfrpage - Page distribution. % tfrpmh - Pseudo Margenau-Hill distribution. % tfrppage - Pseudo Page distribution. % tfrpwv - Pseudo Wigner-Ville distribution. % tfrri - Rihaczek distribution. % tfrridb - Reduced interference distribution (Bessel window). % tfrridh - Reduced interference distribution (Hanning window). % tfrridn - Reduced interference distribution (binomial window). % tfrridt - Reduced interference distribution (triangular window). % tfrsp - Spectrogram. % tfrspwv - Smoothed Pseudo Wigner-Ville distribution. % tfrwv - Wigner-Ville distribution. % tfrzam - Zhao-Atlas-Marks distribution. % % Bilinear Time-Frequency Processing in the Affine Class % tfrbert - Unitary Bertrand distribution. % tfrdfla - D-Flandrin distribution. % tfrscalo - Scalogram, for Morlet or Mexican hat wavelet. % tfrspaw - Smoothed Pseudo Affine Wigner distributions. % tfrunter - Unterberger distribution, active or passive form. % % Reassigned Time-Frequency Processing % tfrrgab - Reassigned Gabor spectrogram. % tfrrmsc - Reassigned Morlet Scalogram time-frequency distribution. % tfrrpmh - Reassigned Pseudo Margenau-Hill distribution. % tfrrppag - Reassigned Pseudo Page distribution. % tfrrpwv - Reassigned Pseudo Wigner-Ville distribution. % tfrrsp - Reassigned Spectrogram. % tfrrspwv - Reassigned Smoothed Pseudo WV distribution. % % Ambiguity Functions % ambifunb - Narrow band ambiguity function. % ambifuwb - Wide band ambiguity function. % % Post-Processing or Help to the Interpretation % friedman - Instantaneous frequency density. % holder - Estimate the Holder exponent through an affine TFR. % htl - Hough transform for detection of lines in images. % margtfr - Marginals and energy of a time-frequency representation. % midscomp - Mid-point construction used in the interference diagram. % momftfr - Frequency moments of a time-frequency representation. % momttfr - Time moments of a time-frequency representation. % plotsid - Schematic interference diagram of FM signals. % renyi - Measure Renyi information. % ridges - Extraction of ridges. % tfrideal - Ideal TFR for given frequency laws. % % Visualization & backup % plotifl - Plot normalized instantaneous frequency laws. % tfrqview - Quick visualization of time-frequency representations. % tfrview - Visualization of time-frequency representations. % tfrparam - Return the paramaters needed to display (or save) a TFR. % tfrsave - Save the parameters of a time-frequency representation. % % % Other % disprog - Display progression of a loop. % divider - Find dividers of integer such that product equals integer. % dwindow - Derive a window. % integ - Approximate integral. % integ2d - Approximate 2-D integral. % izak - Inverse Zak transform. % istfr1 - returns true if a distribution is Cohen's class type 1 (spectrogram) % istfr2 - returns true if a distribution is Cohen's class type 2 (Wigner-Ville) % istfraff - returns true is a distribution is an affine class member % kaytth - Kay-Tretter filter computation. % modulo - Congruence of a vector. % movcw4at - Four atoms rotating, analyzed by the Choi-Williams distribution. % movpwdph - Influence of a phase-shift on the interferences of the pWVD. % movpwjph - Influence of a jump of phase on the interferences of the pWVD. % movsc2wv - Movie illustrating the passage from the scalogram to the WVD. % movsp2wv - Movie illustrating the passage from the spectrogram to the WVD. % movwv2at - Oscillating structure of the interferences of the WVD. % odd - Round towards nearest odd value. % sigmerge - Add two signals with given energy ratio in dB. % zak - Zak transform. % griffitc - Test signal example C of Griffiths' paper. % lambdak - Evaluate lambda function for Affine Wigner distribution. % umaxbert - Determination of the maximum value of u for Bertrand distribution. % umaxdfla - Determination of the maximum value of u for D-Flandrin distribution. % umaxunte - Determination of the maximum value of u for Unterberger distribution.
【资源说明】 基于Matlab的蒙特卡洛仿真代码+项目说明(毕设).zip基于Matlab的蒙特卡洛仿真代码+项目说明(毕设).zip 写通信方面的论文时,其中会涉及到公式仿真,本代码是我在做毕业设计过程中用到的蒙特卡洛仿真代码。 由于代码中只涉及到公式的理论部分和公式最终表达式,不涉及到具体的推导细节,所以可以公开。 论文模型简介(System Model Brief Intro) 论文涉及的是物理层安全课题,将通信系统模拟为一个源节点、一个目的节点、一个窃听节点,假设由于距离的遥远,源节点不能直接跟目的节点进行通信,必须借助一个中间节点,类似于基站通信。这个课题模拟一个多中间节点的模型,将其中一个作为最优中继,其他的作为友好干扰辅助节点。 代码模块说明(Code Module) # fun1.m 函数体 方案:最优中继选择,其他的中间节点作为友好干扰辅助 实际值和理论值仿真 仿真内容:窃听概率(Intercept Probability) # fun2.m 函数体 方案:最优中继选择,其他的中间节点里面选择一个作为友好干扰辅助 实际值和理论值仿真 仿真内容:窃听概率(Intercept Probability) # fun3.m 函数体 方案:两种方案公式相同 实际值和理论值仿真 仿真内容:中断概率(Outage Probability) # Instantaneous_fun1.m 中间节点数分别为2、4、6时,调用fun1函数 # Instantaneous_fun2.m 中间节点数分别为2、4、6时,调用fun2函数 # Instantaneous_fun3.m 中间节点数分别为2、4、6时,调用fun3函数 # SRT_ORMJS.m 方案:最优中继选择,其他的中间节点作为友好干扰辅助 窃听概率和中断概率的性能折衷(Security-Reliability Tradeoff) # SRT_ORSJS.m 方案:最优中继选择,其他的中间节点里面选择一个作为友好干扰辅助 窃听概率和中断概率的性能折衷(Security-Reliability Tradeoff) 【备注】 1.项目代码均经过功能验证ok,确保稳定可靠运行。欢迎下载体验! 2.主要针对各个计算机相关专业,包括计算机科学、信息安全、数据科学与大数据技术、人工智能、通信、物联网等领域的在校学生、专业教师、企业员工。 3.项目具有丰富的拓展空间,不仅可作为入门进阶,也可直接作为毕设、课程设计、大作业、初期项目立项演示等用途。 4.当然也鼓励大家基于此进行二次开发。在使用过程中,如有问题或建议,请及时沟通。 5.期待你能在项目中找到乐趣和灵感,也欢迎你的分享和反馈!

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