dsss

用FFT计算信号的功率谱密度时，需要先计算FFT，再计算双边谱密度，然后计算单边谱密度。在matlab里注意FFt要除以采样点数，计算双边谱时要注意除以频率分辨率。 ( When calculated using the FFT power spectrum density signal, you need to calculate the FFT, and then calculate the bilateral spectral density, and then calculate the unilateral spectral density. In matlab in Note FFt divided by sampling points should be noted when calculating the bilateral spectrum divided by the frequency resolution.)

lstm实例+代码，包含详细注释，能运行，简单的房产价格预测实例(Lstm u5B9E u4F9 u4E09 u4EF3 u643 U6D4B u5B9E u4F8B)

V BLAST using zero forcing and symbol cancellation.

用规则线性判别方法（RLDA）进行人脸识别的matlab源程序，及相关的参考文章。(use regulations linear discriminant method (RLDA) face recognition Matlab source, and the relevant reference articles.)

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说明：  在机器学习问题中，很多的算法归根到底就是在求解一个优化问题，然而我们的现实生活中也存在着很多的优化问题，例如道路上最优路径的选择，商品买卖中的最大利润的获取这些都是最优化的典型例子，前面也陆续地有一些具体的最优化的算法，如基本的梯度下降法，牛顿法以及启发式的优化算法(PSO,ABC等)。(In machine learning problems, many algorithms are in the final analysis to solve an optimization problem. However, in our real life, there are also many optimization problems, such as the choice of the optimal path on the road, the acquisition of the maximum profit in the sale of goods. These are typical examples of optimization. There are also some specific optimization algorithms, such as basic gradient Descent method, Newton method and heuristic optimization algorithm (PSO, ABC, etc.).)

说明：  matlab程序，是用牛拉法求解电力系统功率非线性方程，比较简单啊，自己也是正在学习中ing(matlab，newton )

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4元FSK调制输出功率谱，基带码元传输间隔0.1s，FSK调制参数的频率间隔分别设置为5HZ和20Hz，(4 yuan FSK modulated output power spectrum, the baseband symbol transmission interval of 0.1s, the frequency interval FSK modulation parameters are set to 5HZ and 20Hz,)

说明：  牛顿公式、修正牛顿公式和斜激波关系式三种计算压力系数方法比较程序MATLAB源码(Newton' s formula, modified Newton formula and oblique shock relation three calculation pressure coefficient comparison procedures MATLAB source)