WALSH CODES AND THEIR DERIVATIVES

本人改编的一个多载波OFDM的函数，利用它可以直接生成OFDM的BER。-I adapted a multi-carrier OFDM function, it can be directly generated OFDM BER.

一个非常全面的关于串口通讯方面的饭卡系统程序源码，大家共享-A very comprehensive on the serial communication system procedures饭卡source, everyone shared

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

本文主要阐述了DTMF的原理及如何在MATLAB上产生DTMF信号，主要涉及到电话拨号音合成的基本原理及识别的主要方法，利用 MATLAB 软件以及 FFT 算法实现对电话通信系统中拨号音的合成与识别。并进一步利用 MATLAB 中的图形用户界面 GUI 制作简单直观的模拟界面。 能够利用矩阵不同的基频合成 0 － 9 不同按键的拨号音，并能够对不同的拨号音加以正确的识别，实现由拨号音解析出电话号码的过程，完成对电话拨号音系统的简单的实验仿真。-This paper described the principle and how DTMF in MATLAB to generate DTMF signals, mainly related to the telephone dial tone of the basic principles of synthesis and identification of the main methods, the use of MATLAB software and the FFT algorithm on the telephone communication system dial tone Synthesis and Recognition . And further the use of MATLAB in the production of graphical user interface simple and intuitive GUI interface simulation. Able to take advantage of matrix synthesis of different fundamental frequency 0- 9 different keys of the dial tone and be able to different dial tone to be the correct identification, the dial tone from a telephone number to resolve the process of completion of the telephone dial tone system, a simple experiment simulation

wimax 标准中码率为1/2，码长为2304 的ldpc码的硬件实现编码及译码算法-wimax standard rate of 1/2, code length 2304 of the ldpc code encoding and decoding algorithm for hardware implementation

这里是 Erlang B 公式执行的源代码。它是在 Matlab 环境中使用。它包括三个功能，可以用于计算交通、 渠道和可能性。它支持超过 500 个频道作为输入。

串口原代码，有vc++编写的源代码，主要通过线程的管理来实现的。

WAP2.0UAProfile收集，可以为WAP编程、测试、应用提供参考，有重要的参考价值-collection of WAP2.0UAProfile, good reference for WAP codeing,testing and applicaton,valuble material.

易语言开发 合区账号查找工具 可以直接读取海浪合区工具生成的文件-failed to translate

现有数字信号自动调制识别方法大多只适用于无记忆信号，如PSK、ASK、FSK信号等。将有记忆 信号(MSK信号)和无记忆信号一起考虑，提出了一种改进的数字信号自动识别方法。该方法采用信号的瞬时统 计量作为特征参数，采用多层神经网络作为分类器。计算机仿真表明：当噪声采用高斯白噪声，并且信噪比大于 l5 dB时，识别率高于96％ ；当信噪比不低于l0 dB时，识别率不低于90％。-Existing digital signal automatic modulation recognition methods are mostly applied only to memoryless signals, such as PSK, ASK, FSK signals. Will have a memory signal (MSK signal) and non-memory signal into consideration, an improved digital signal automatic identification method. This method is the use of the instantaneous signal statistics as a characteristic parameter, the use of multi-layer neural network as classifier. Computer simulation shows that: When the noise using Gaussian white noise, and signal to noise ratio greater than l5 dB, the recognition rate is higher than 96 when the signal to noise ratio not less than l0 dB, the recognition rate of not less than 90.