udp echo server and client use them they r working fine

使用USR和RockWell Modem的语音Modem程序 -Modem program Using 3Com USR Modem and RockWell Modem

本源码是用MATLAB仿真的LDPC译码程序，经实际检验，该源码准确无误，对初学LDPC编码的人很有意义。该例成分为两部分，分别是LDPC的编码和译码。欢迎大家下载。

MATLAB for Digital Communication

通过ftp方式下载指定的文件- Document assigns which through ftp way downloading

PCM的好文档 PCM的好文档-PCM good document PCM good documentation of good documentation PCM

该脉冲位置调制与解调是通过脉冲的位置来反映调制信号的信息的-The pulse position modulation and demodulation through the pulse position modulated signal to reflect the information

USB接口，CH375芯片读写U盘的部分程序段。 检测U盘是否正常工作。-USB interface chip CH375 U disk read and write the part of the process. Detection U-normal work.

C# Serial port control ten bar (arduino i/o board)

应用背景This document describes how to set up a 6x6 multiple input, multiple output (MIMO) system using NI LabVIEW software and NI USRP™ (Universal Software Radio Peripheral) hardware. After a brief discussion of MIMO, the paper examines the hardware and software based on LabVIEW for a 6x6 MIMO-OFDM system using 4-QAM as modulation scheme. The system presented here is also capable of working as a 2x2 MIMO and 4x4 MIMO system with appropriate parameter configuration.关键技术With MIMO, you can increase wireless system performance without increasing power consumption. It is based on the idea that when using multiple antennas, the transmitted signal progresses through different wireless channels, from the transmitter antennas to the receive antennas, to

国家环保总局污染源在线通讯协议的简化版，主要用于环保污染监测设备的数据上传-Sources of the State Environmental Protection Administration of the simplified version of online communication protocols, mainly for environmental pollution monitoring equipment, data upload