lab3_sampling_zia

gps的matlab仿真工具包version3.01，函数和处理方法非常全，不错的gps开发仿真工具(gps the matlab simulation toolkit version3.01, function and processing method is very full, good development of simulation tools gps)

线性调频信号频谱估计，与线性调频信号相关MATLAB程序相关，采用二维峰值搜索方法。(Linear frequency modulation signal frequency estimation, and linear frequency modulation signal related MATLAB program, using two-dimensional peak search method.)

利用PSO算法对PID参数进行整定并画图，matlab程序，测试过可以使用(Using PSO to adjust and draw the parameters of PID)

这里面有两个程序，两个都是采用4QAM调制。不过个人觉得第一个更容易懂，因为写的很有条理。我改的那个程序就是根据这个来的。 不过在这里面有个问题就是信道系数只能是由高到低，大家可以试试，改成[0.227 0.46 0.688 0.46 0.227]这个是老师给我的仿真中常用的信道系数，这个成为归一化信道，就是系数平方和为1. 第二个程序没有涉及到信道系数，但是这个程序当中，在128个子载波中，前后有32个空载波，这个在OFDM中也是经常用的，这样可以降低误码率。 (And there are two programs, two are based on 4QAM modulation. But personally feel that the first is easier, because the writing is organized. I changed that procedure is based on the past. However, there is a problem in that there is only channel coefficients from high to low, we can try and change into [0.227 0.46 0.688 0.46 0.227] This is the teacher gave me the simulation channel coefficient commonly used, this became normalized channel, is coefficient of the square and is 1. The second program is not related to channel coefficients, but this program which, in the 128 sub-carriers, the before and after the 32 air carriers, the in OFDM is also often used, which can reduce the error rate.)

多种多任务学习算法的工具箱 有代码有使用手册 matlab版(the toolbox of multi-task learning algorithms (matlab version))

M&M载波恢复算法的MATLAB实现，很具有参考价值，精度满足要求(M&M algorithm for carrier frequency estimate)

改程序产生一个广义的奇异值分解。对于奇异方程而言，改方法非常有效。可以迅速求解方程。CGSVD Compact generalized SVD of a matrix pair in regularization problems(Change the program to generate a generalized singular value decomposition. For the singular equation, the change method is very effective. Equations can be solved quickly. CGSVD Compact generalized SVD of a matrix pair in regularization problems)

说明：  图像阈值分割技术在图像分割中具有重要的意义。遗传算法既可以对全局信 息高效利用，也减少了存储空间和计算量。利用遗传算法的优点，提出了一 种用改进遗传算法的图像分割的方法，可以将父代中适应度大的个体代替当前代 中的个体，保证了可以选出最优的个体。遗传算法是具有鲁棒性和自适应性的搜 索方法.通过实验对比，表明该方法具有快速、稳定分割的特点。(Image threshold segmentation technology is of great significance in image segmentation. Genetic Algorithms can be used for global information Efficient utilization of information also reduces storage space and computation. Based on the advantages of genetic algorithm, a new genetic algorithm is proposed. A method of image segmentation based on improved genetic algorithm can replace the current generation with individuals with large adaptability in the parent generation. The individual in the system ensures that the best individual can be selected. Genetic Algorithms are Robust and Adaptive Search The experimental comparison shows that the method has the characteristics of fast and stable segmentation.)

扩频接收机设计实例 matlab语言，做扩频的有很大参考价值。欢迎下载(spread spectrum receiver design examples Matlab language, so spreading the great reference value. Welcome to download)

说明：  一种新型的matlab生成随机线条的代码，用于后续处理(A new matlab code for generating random lines for subsequent processing)