语音压缩和解压缩源代码。

利用计算机串口通信，实现对GPRS模块的控制，并进行英文及汉字的编码及发送功能。-Computer serial communication is used to achieve control of the GPRS module and the code in English and Chinese characters and send functions.

考虑载波的qpsk信号在瑞利信道上的仿真-consider Carrier qpsk Rayleigh channel signal simulation

In this simulink model , QPSK modulation and demodulation is simulated .A square root raised cosine pulse shaped signal is modulated and given as input to the demodulator.The received signal is demodulated and given to the detector where it is matched filtered and down-sampled .The effects of symbol timing offset can be seen by varying the phase of down-sampling operation.The signal transmitted is recovered at the detector output.-In this simulink model , QPSK modulation and demodulation is simulated .A square root raised cosine pulse shaped signal is modulated and given as input to the demodulator.The received signal is demodulated and given to the detector where it is matched filtered and down-sampled .The effects of symbol timing offset can be seen by varying the phase of down-sampling operation.The signal transmitted is recovered at the detector output.

vb利用winSocket写的 网络数据传输 程序 很简单的实现了文件的传输，XPSP2 上 vb6.0 调试通过。 -vb winSocket write use of network data transmission procedure is very simple realization of the document transmission, XPSP2 on vb6.0 debugging through.

关于ＩＳＡＧ网关相关的协议文档，该规范为电信的综合接入网关协议-ISAG gateway on the agreement related documents, the specification for the Telecom Integrated Access Gateway Protocol

应用背景应用于通信系统信号的调制解调实例，通过systemview软件搭建通信系统仿真平台，给出了信号的调制解调过程及波形具体形式，为与通信实际环境相关，采用高斯噪声模拟通信信道。关键技术SystemView主要用于搭建通信系统平台，采用了软件中的相关器件实现信号的调制及发射。采用低通滤波等得到基带信号，然后采用单刀双掷开关等器件完成判决，实现解码。

CryptoAPI的演示程序，可以进行测试。多联系，非常感谢。-CryptoAPI demo program can be tested. More links Thank you very much.

This paper discusses the establishment and relevant accomplishments of a simple facility used for students learning aids based on the Keplerian Orbit parameters. Three major areas in Orbital Mechanics are discussed in this paper, Orbit of a satellite, Field of View of a satellite and Constellation of Satellites. -This paper discusses the establishment and relevant accomplishments of a simple facility used for students learning aids based on the Keplerian Orbit parameters. Three major areas in Orbital Mechanics are discussed in this paper, Orbit of a satellite, Field of View of a satellite and Constellation of Satellites.

自动下载ftp站点的文件，并自动运行指定的应用程序，保证客户端程序及文件的实时性- Automatically downloads the ftp stand the document, and the automatic movement assigns application procedure, guarantee customer end procedure and document timeliness

 节点（22）的数目被固定在程序中。节点都配置了一个移动的无线节点的具体参数。创建不结盟运动文件和跟踪文件后，我们建立了地形对象集的 node_ （$i） [$ns 节点] 用于创建节点。节点的初始位置被固定。特定的 X，Y 坐标被分配到每个节点。节点都给以固定的速度移动和固定目标位置。 在这里我们设置的初始大小，在这里用于通过使用 initial_node_pos AODV 路由协议的每个节点。 $val(stop) 指定的结束时间的仿真结果.的 UDP 代理附加到发送节点。LossMonitor 代理连接到接收器节点。连接代理和 CBR 流量附加到的 UDP 代理。 现在通信设置，建立了节点。