QPSK

M=4的双正交信号数字通信系统仿真实例，包括主程序和子程序全部内容，可以直接运行。(M = 4 of the pairs of orthogonal signal digital communication system simulation examples, including the main program and subroutines all, you can run directly.)

八种典型雷达辐射源信号仿真，包括不同参数的信号仿真，可用于信号分选等的雷达信号分析(eight typical radar emitter signals simulation,including the signals with different parameter. this signal can be used for signal deinterleaving)

Program can generate white noise Gaussian distribution, and produces other white noise distribution by white Gaussian noise

MAT4 MAT4 MAT4 MAT4

这是一个用人工鱼群算法编写的求函数极值的matlab程序(This is an artificial fish school algorithm with the evaluation of the function extreme value write matlab program)

Locally-Linear Embedding (LLE)[9] was presented at approximately the same time as Isomap. It has several advantages over Isomap, including faster optimization when implemented to take advantage of sparse matrix algorithms, and better results with many problems. LLE also begins by finding a set of the nearest neighbors of each point. It then computes a set of weights for each point that best describe the point as a linear combination of its neighbors. Finally, it uses an eigenvector-based optimization technique to find the low-dimensional embedding of points, such that each point is still described with the same linear combination of its neighbors. LLE tends to handle non-uniform sample densities poorly because there is no fixed unit to prevent the weights from drifting as various regions differ in sample densities. LLE has no internal model.

说明：  可就在三个错误的bch码，以及经过仿真在不同SNR下的误码率曲线。我们的业余作业。经过调试的。(This is my homework on 3-error-correcting bch code and its bit error rate curves at different SNR after debugging.)

Warning: AVIREAD will be removed in a future release. Use MMREADER instead.

比较复杂的可进行修改扩展的遗传算法源程序，带有说明文档(Complex can be extended to modify the genetic algorithm source code, with documentation)

采用symmetrized split-step method数值求解非线性薛定谔方程(Numerical solution of nonlinear Schrodinger equation by symmetrized split-step method)