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OFDM_send_matlab程序 (OFDM_send_matlab procedures)

Mersenne Twister随机数发生器（Mersenne Twister generator,MTG for short）是Makoto Matsumoto于1998年对TGFSRG(旋转广义反馈移位寄存器发生器)的更进一步改进。(Mersenne Twister random number generator (Mersenne Twister generator, MTG for short) is Makoto Matsumoto in 1998 TGFSRG (rotation generalized feedback shift register generator) is further improved.)

这是个BCH的信道编码程序，提供给大家，希望给大家以帮助(it is a program of encode and decode of bch,wish it can help you)

用双线性变换法设计IIR数字滤波器 滤波就是将外界干扰的不需要的频率滤除掉，一面影响要测试数据的结果。比如如果是心电波的话，如果这是外界有很大的噪声干扰，滤波就是把不必要的信号给抑制掉，以便对心跳的正常测试。通过图比较，滤波后的明显比之前的要平滑，就是滤去干扰噪声的结果。采样间隔对实验有影响，取的过大会导致频率混叠。(Bilinear transformation method using digital filter IIR filter design is to outside interference filter out unwanted frequencies, while the impact to test data results. For example, if it is so heart waves, if this is a great noise outside interference, filtering is unnecessary signal out to the curb in order to test the normal heartbeat. Through chart comparison, after filtering than before to smooth the noise interference is the result of least squares. Sampling interval of the experiment affect take-off frequency of the General Assembly leading to aliasing.)

在计算机上产生一组实验数据，首先产生一段零均值白噪声数据u（n）,令功率为 ，让u(n)通过一个三阶FIR： 得到y(n). .y(n)上加三个实正弦信号f1’=0.1,f2’=0.25,f3’=0.26调整 和正弦信号幅度信噪比大致为10dB,50dB,50dB. (1) 令N=256,描绘xn波形； (2)得出真实功率谱密度 . (3) 利用此实验数据Pisarenko谐波分解法估计该实验数据的正弦频率及幅度。 (On the computer to generate a set of experimental data, first generate a zero mean white noise data u (n), so that power, let u (n) through a third-order FIR: get y (n).. Y (n) added three real sinusoidal signal f1 ' = 0.1, f2' = 0.25, f3 ' = 0.26 and sine signal amplitude adjustment signal to noise ratio is approximately 10dB, 50dB, 50dB. (1) that N = 256, depicted xn waveform (2) the true power spectral density obtained. (3) using this experimental data, Pisarenko harmonic decomposition method to estimate the experimental data of the sinusoidal frequency and amplitude.)

algorithmic trading strategy backtesting for MATLAB

this code is used to show the result of power flow solution of a power system

说明：  新英格兰10机39节点系统，用于电力系统仿真(New England 10-machine 39 node system for power system simulation)

说明：  本程序包括树木、草以及鲜花的加载，花和草可以在风中摆动，这个动态森林很逼真(This procedure, including trees, grass and flowers of the load, flowers and grasses can be swinging in the wind, the dynamics of forest is very realistic)

Eigenvalues and eigenvectors examples