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FFT的算法的流程及在CCS平台上实现1024点的FFT变换(The flow of FFT algorithm and the 1024 point FFT transformation on CCS platform.)

文中图片放大显示特效图片放大popeye插件所属专题图片代码(In this article, the image enlargement display special effect picture enlargement Popeye plug-in belongs to thematic picture code)

说明：  实现线性的电力系统潮流计算，分别为首端电压末端功率和末端电压末端功率，可实现一定精度的迭代计算(Power flow calculation in power system)

用matlab产生一个频率为1Hz的余弦信源 ，设载波频率20Hz， ,试画出： ? AM及DSB调制信号的时域波形； ? 采用相干解调后的AM及DSB信号波形； ? AM及DSB已调信号的功率谱； ? 调整载波频率及m0，观察分的AM的过调与DSB反相点现象。(A cosine source with a frequency of 1Hz is generated by MATLAB, and the carrier frequency 20Hz is set. The time domain waveform of AM and DSB modulation signals; Adopt coherent demodulation of AM and DSB signal waveforms, The power spectrum of AM and DSB modulated signals, Adjust the carrier frequency and M0, observe the AM overshoot and DSB inverting point phenomenon.)

ofdm信道特性 Channel transmission simulator Channel transmission simulator ％ ％ inputs: ％ sig2 - noise variance ％ Mt - number of Tx antennas ％ Mr - number of Rx antennas ％ x - vector of complex input symbols (for MIMO, this is a matrix, where each column ％ is the value of the antenna outputs at a single time instance) ％ H - frequency selective channel - represented in block-Toeplitz form for MIMO transmission ％ N - number of symbols transmitted in OFDM frame ％ ％ outputs: ％ y - vector of channel outputs (matrix for MIMO again, just like x matrix) ％ create noise vector sequence (each row is a different antenna, each column is a ％ different time index) note: noise is spatially and temporally white(channel characteristics of OFDM Channel transmission simulatorChannel transmission simulator inputs: sig2- noise variance Mt- number of Tx antennas Mr- number of Rx antennas x- vector of complex input symbols (for MIMO, this is a matrix, where each column is the value of the antenna outputs at a single time instance) H- frequency selective channel- represented in block-Toeplitz form for MIMO transmission N- number of symbols transmitted in OFDM frame outputs: y- vector of channel outputs (matrix for MIMO again, just like x matrix) create noise vector sequence (each row is a different antenna, each column is a different time index) note: noise is spatially and temporally white)

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这是一个简单的时钟源码,虽然没什么用处,但可以玩玩吧!!(This is a simple clock source, although useless, but you can play it!!)

说明：  带有约束的粒子群算法，求自己需要的极大值极小值。(Particle swarm optimization with constraints)

说明：  计算傅立叶光学的实现，可以用于GS算法（需要改造），角谱算法的参考，基础算法本人已经验证，可实现衍射的计算，经开发可以用于DOE（衍射光学元件）的设计(The realization of computational Fourier optics can be used as a reference for GS algorithm and angular spectrum algorithm. The basic algorithm has been verified by myself, and can be used for the calculation of diffraction. The developed algorithm can be used for the design of DOE (Diffractive Optical Element).)

It is about finidng the real and reactive power given some harmonics in the system.