chirp1D

matlab生成m序列的函数 原来那个效率太低，主要是因为实际应用并不需要生成太长的m序列，加入了需求长度，能有效减少运行时间。25级的移位寄存器，运行了一个小时都没有出来一周期，我仅仅需要三千bit而已。改进版：(matlab generate a function of the original m sequence that efficiency is too low, mainly because of the practical application does not require generation of long m sequences, joined the demand for length, can effectively reduce the running time. 25 of the shift register, run for an hour did not come out one cycle, I just need more than 3000 bit. Improved version:)

数据管理、记录浏览、借还操作（借书、还书、续借、更新、删除、添加）等功能。(Data management, record visit, through further operations (borrowing, but also books, renew, update, delete, add) and other functions.)

The file lib_crc.c contains source code for functions to calculate five commonly used CRC values: CRC-16, CRC-32, CRC-DNP, CRC-SICK, CRC-Kermit and CRC-CCITT. The functions can be freely used.

说明：  计算方法：函数平方逼近多项式的均方误差计算(Calculation method: function square mean square error of approximation calculation of polynomial)

As shown in (5), the inductor current oscillates around a dc value at twice the grid frequency. The PWM technique assumes a constant dc input current and thus,

a Matlab program of Romberg Algorithm calculate

Matlab Primer language 2011

QPSK发送机，信号源为随机二进制序列，经串并变换后，转换成双极性信号发送(QPSK transmitter, the signal source for random binary sequence, series and transform, change the polarity signal sent in pairs)

说明：  bp神经网络的相关MATLAB实现，源码被保存在txt文件中，需要自行粘贴即可(Related MATLAB bp neural network implementations, source code is stored in the txt file, you need to stick to their own)

神经网络遗传算法函数极值寻优————非线性函数极值寻优(Neural network genetic algorithm optimization function extreme nonlinear function extreme optimization)