PPP拨号上网协议栈，通过串口编程，实现PPP拨号网络底层协议以及TCP/IP协议，主要用于GPRS，CDMA，电话拨号等通信领域。...

串口通信封装动态库，调用的时候就不需要关注串口参数了，直接由这个dll完成。调用的时候只需要Open，Read，Write，和Close就行。

Generate orthogonal Walsh codes, which can be used in wireless communications such as CDMA system.

介绍了QAM调制的星座图，对于学习QAM调制的有一定的指导意义。-Introduction of the QAM modulation constellation diagram for QAM modulation of learning have a certain significance.

在第1章中，我们首先讨论在使用和不使用M F C的情况下创建一个窗口，以便清楚地了解 M F C是如何工作的。M F C窗口既可以由属于M F C的C + +类创建，也可以由一个早于并存在于 M F C之外的非C + +窗口类创建。我们将进一步观看窗口类并讨论那些由Wi n d o w s操作系统提 供的窗口类。最后，再看看M F C应用程序中都有什么。-In Chapter 1, we first discuss the use and does not use MFC create a window to a clear understanding of how the work of MFC. MFC window can belong to MFC from the C++ Type create, you can co-exist as early as by an outside non-MFC is C++ Window class to create. We will further watch window class and discussed by the Wi ndows provided by the operating system window class. Finally, take a look at MFC application has what.

通过飞思卡尔MC9S12G128单片机的串口发送接收程序波特率采用9600可随意配置波特率，实现发送单个字节或者字符串的功能等等，这款单片机有三个串口本程序三个串口的使用都已经标注完成，在这个程序里面用的是RXD2，TXD2其他的串口的话在程序里面只是被屏蔽仍然可以使用根据使用者的需求随意使用这任意的串口都已测试调试完成

这是在windows上使用modem通信的例子程序，有很高的实用价值，同时也可以学习到tapi的编程方法-This is the windows on the use of the example of modem communications procedures with a high degree of practical value, they can also learn the programming methods TAPI

SYMPCHUNK sets the number of symbols demodulated at once with a constant carrier frequency and symbol timing offset. This is a fundamental decoder parameter that establishes its carrier and symbol timing tracking bandwidth. Set it too low and the demodulator can"t accurately determine carrier frequency and symbol timing on a noisy signal. Set it too high and the demodulator may not be able to track large symbol rate offsets caused by Doppler shift and/or A/D or spacecraft clock errors. Or it might have trouble tracking high rates of change in the carrier frequency due to Doppler acceleration.The current value of SYMPCHUNK is 4*N1 = 512, where N1 = 128 is the order of the convolutional interleaver. 512 symbols is 512 milliseconds at 1000 symbols/sec, giving a frequency/time determination SNR that is 10*log10(512) = 27 dB greater than the Es/N0, not counti

FTDI test, by this example can try to use FTDI chips

LTE 3GPP channel modeling using matlab.   Generates the correlated tap coefficients of the MIMO tapped delay line % model to be used during one iteration of the main loop. The function % performs a double interpolation, first in the fading vector domain, % to collect the fading samples corresponding to the (sub)chip-spaced time % samples, then in the tap domain, to match the delays of the PDP to % the sample instants of the simulation. This second interpolation complies % with the description in TR 25.869  

在XWindows下使用打印机界面发送传真 -Using printer interface to send fax in Xwindows