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实现LDPC码校验矩阵的构造，采用Mackay 1A方法(Implementation of LDPC code check matrix construction uses Mackay 1A method)

matlab code for maximal se master

用于调制识别的代码，通过提取特征参数，实现bpsk，qpsk等调制方式的识别(For modulation recognition code, through the extraction of characteristic parameters, implementation bpsk, qpsk forms of identification, such as modulation)

手机GSM TI 平台 串口 uart 驱动 源代码(Serial port uart driver source code of mobile phone GSM TI platform)

在n个城市建设通信网络，只需架设n-1条线路即可至少包含10个城市，城市数n由键盘录入，城市坐标由随机函数产生小于100的整数(In the construction of communication network in n cities, only n-1 lines are needed to include at least 10 cities. The number of cities n is input by keyboard, and the coordinates of cities are generated by random functions into integers less than 100.)

A good book for C++ for beginners

西门子GPRS 调制解调器编程参考手册，型号TC35(Siemens GPRS modem programming reference manual, model TC35)

Z域表示的数字滤波器的响应举例,利用给出的Z域的传递函数，求在给定初始状态和输入信号的情况下的系统的零输入响应，零状态响应，完全响应等。(Z-domain representation of the response of the digital filter for example, using the given Z-domain transfer function, to seek zero input response of the system in the case given the initial state and the input signal, the zero state response, complete response.)

说明：  本程序是将串口实时接收到的数据，然后将数据进行曲线绘制。(The data received by serial port is plotted in real time.)

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