生成2KHz和8KHz的混合信号，使该信号通过上述滤波器，观察滤波前后的波形变化和频谱分布情况。...

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依据GSM 05.03建议，在高斯干扰和突发干扰下，对TCH/FS信道作信噪误码性能的仿真-05.03 based on GSM, the Gaussian interference and unexpected interference, right TCH/FS channel for the signal to noise BER simulation

ADC DAC -- Scientist s Guide-ADC DAC-- Scientist s Guide

FSK详细资料，关于FSK/DTMF相关的资料等等 -FSK detailed information on the FSK/DTMF-related information, etc.

本例是采用UDP通信，包括服务器与客户端，包括数据重传机制和异常处理机制-In this case is the use of UDP communications, including server and client, including data retransmission mechanism and exception handling mechanism

SIP. Understanding the Session Initiation Protocol Second Edition.rar全面介绍SIP RFC3261-SIP. Understanding the Second Session Initiation Protocol Edition.rar introduced SIP RFC3261

基于CAsyncSocket的局域网通信程序-CAsyncSocket LAN-based communication program

某论坛要开发短消息系统 ，实现如下功能： 用户登录、登出 查看个人的短消息 发送短消息 回复短消息 删除短消息 该系统要满足如下要求： 已读和未读的短消息应采用不同的标记 回复时自动添写用户名 未登录不能看短消息，自动跳转到登录页面 登录后自动跳转到查看短消息列表的页面 -A Forum is expected to open Faduanxiaoxi system to achieve the following functions: user login, logout view personal reply short message to send a short message SMS Short Message Delete the system to meet the following requirements: have read and unread short message should be different marked automatically reply logged Tianxie user name can not see a short message, automatically redirecting to login page automatically after login Jump to see a list of short message page

业务被触发 时，从BCP进入整体业务逻辑（GSL）处理的始发点。 返回点(POR)：在整体业务逻辑（GSL）处理结束后，返 回到BCP继续呼叫处理的终结点。 -Business was triggered when, from the BCP into the overall business logic (GSL) deal with the starting point. Return point (POR): in the overall business logic (GSL) after the end of treatment and return to the BCP continues to call the end point of treatment.

本例子详细介绍了如何编制一个利用win32串口API函数，通过读写串口控制MODEM，进而实现远程数据传输的程序。-the detailed examples of how to use the preparation of a Serial win32 API functions to read and write through the modem serial port control, thereby achieving long-distance data transmission procedures.