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BPSK仿真程序,通过输入有效数值，函数自动计算通信过程，并输出误码率(BPSK simulation program, through effective numerical input, the function automatically calculate the communication process, and output BER)

PID调节器，可以通过调节PID参数观察曲线变化(PID controller, you can adjust the PID parameters observed curve)

铁蝶式期权蝶式价差策略:把价差策略分解成单个期权的组合并分析期初成本和期末收益.(Iron Butterfly spread options strategy: to spread down into a combination of a single policy options and cost analysis at the beginning and end of the income)

基于C语言的压缩感知程序，目前大部分程序都是基于matlab的，这个代码可以作为参考。(C-based compressed sensing program, most programs are based on the current matlab, this code can be used as a reference.)

GENETIC ALGORITHM OPTIMIZATION

海杂波的matlab仿真，希望对大家有用(Matlab simulation of sea clutter, in the hope that useful)

说明：  用matlab软件计算电力系统的潮流，使电力系统运行可靠(Power systems using matlab software to calculate the trend, so that the power system is reliable, )

对获得的声音进行处理。得到相关参数的同时进行滤波。以达到降噪的目的。(To deal with and filter a kind of input sound modify the parameters of this voice.)

matlab遗传算法工具箱解函数优化问题应用实例(matlab genetic algorithm toolbox solution function optimization application examples)

Construct the short length of QC LDPC codes without girth 4 and girth 6(The Program to construct the short length of QC LDPC codes without girth 4 and girth 6 Copyright (C) Yang XIAO, Jun FAN, BJTU, July 26, 2007, E-Mail: yxiao@bjtu.edu.cn. This program presents an approach [1] for constructing the short length of LDPC codes with girth 8. First, we design 3 submatrices with different shifting functions given by our schemes, then combine them into a matrix according to our approach, finally, expand the matrix into a desired parity-check matrix using identity matrices and cyclic shift matrices of the identity matrices. The simulation results in AWGN channels show that the codes which can be obtained by the generator matrix derived from this check matrix for encoding the random information bits are as good as random LDPC codes [1]. Ref: [1] J. Fan, Y. Xiao, “A design of LDPC codes with large girth based on the sub-matrix shifting”, IET International Conference on Wireless Mobile and Multimedia Networks Proceedings (ICWMMN 2006), (CP525), p. )