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四阶龙格库塔法,大学MALAB实践课程 需要的请下载(Fourth-order Runge-Kutta method, the University needs MALAB practical courses please download)

E-book - Digital Signal Processing - Proakis & Ingle.

1.理解显式差分格式的依赖区域。写出所给微分方程的依赖区域。 2.会求显式差分格式的截断误差。 3.能写出显式差分格式的CFL条件，显式差分格式的稳定性条件，写出显式差分格式的收敛性条件。 (Understanding the explicit difference scheme dependent region. Write to differential equations dependent region. 2 will seek explicit difference scheme truncation error. Explicit Difference Scheme CFL conditions, the stability condition of the explicit difference scheme able to write, write explicit difference scheme convergence conditions.)

米散射相函数对比，包括散射相函数抽样，不同波长，不同折射率(The contrast of the phase function of the rice scattering, including the scattering phase function sampling, the different wavelengths and the different refractive index)

说明：  GENE算法的应用，分割相关的肝脏图。用遗传算法找到最优阈值，然后选择canny算子(the application of GENE algorithm in matlab)

music算法进行到达角（AOA）定位的仿真源代码，希望对大家有帮助(music DOA algorithm (AOA) positioning the simulation source code, we want to help)

In a multiple transmit antenna, single antenna per receiver downlink channel with limited channel state feedback, we consider the following question: given a constraint on the total system-wide feedback load, is it referable to get low-rate/coarse channel feedback from a large number of receivers or high-rate/high-quality feedback from a smaller number of receivers? Acquiring feedback from many receivers allows multi-user diversity to be exploited, while high-rate feedback allows for very precise selection of beamforming directions. We show that there is a strong preference for obtaining high-quality feedback, and that obtaining near-perfect channel information from as many receivers as possible provides a significantly larger sum rate than collecting a few feedback bits from a large number of users.

说明：  里面包含多种综合评价方法，如层次分析法、模糊综合评判、基于可拓学的综合评价方法、数据包络分析法、TOPSIS分析法、熵权法以及人工神经网络分析法(It contains many comprehensive evaluation methods, such as analytic hierarchy process, fuzzy comprehensive evaluation, extension-based comprehensive evaluation method, data envelopment analysis method, TOPSIS analysis method, entropy weight method and artificial neural network analysis method.)

说明：  首先，建立两个模拟信号的数学模型 有用信号 干扰信号。两个信号的中心频率、信号带宽等参数由学生自己选定，要求两个信号的频谱不重叠 分别画出三个模拟信号的时域波形和频谱图；然后，根据x_a (t)的中心频率和带宽，按照奈奎斯特采样定理选择采样频率fs，分别对信号s_a1 (t)、s_a2 (t)、x_a (t)进行时域采样，得到离散信号s_1 (n)、s_2 (n)、x(n)。利用FFT算法分析离散信号的频谱，分别画出三个离散信号的时域波形和频谱图； 接着，设计数字滤波器H(z)，要求该滤波器对干扰信号s_2 (n)的衰减大于40dB。提出滤波器的设计指标，并设计滤波器，给出滤波器的设计结果，绘制滤波器的幅频特性和相频特性曲线，验证滤波器的设计结果是否达到设计指标要求；此外，选择实现数字滤波器H(z)的结构，画出滤波器结构信号流图；然后，将合成信号x(n)输入数字滤波器H(z)，按照所选择的滤波器结构，设计计算机程序计算滤波器的输出响应y(n)，画出y(n)的时域波形和频谱图；(the synthetic signal x (n) is input into the digital filter H (z). According to the selected filter structure, a computer program is designed to calculate the output response y (n) of the filter, and the time-domain waveform and spectrum diagram of Y (n) are drawn)

采用ARX进行建模，迭代的方法进行油价预测，油价数据从国际网站上下载，预测效果较好(ARX modeling)