rs码的编码,里面包含了诸如有限域的生成构造等很多有用的算法...

短信接口实现 实现通过程序控制发送短信息 短信群发

一个自己写的PC串口工具源程序,使用MSComm串口控件 -A tool to write your own source code of the PC serial port, use the serial port control MSComm

A. 产生一个长为1000的二进制随机序列，“0”的概率为0.8，”1”的概率为0.2；B. 对上述数据进行归零AMI编码，脉冲宽度为符号宽度的50%，波形采样率为符号率的8倍，画出前20个符号对应的波形（同时给出前20位信源序列）；C. 改用HDB3码，画出前20个符号对应的波形；D. 改用密勒码，画出前20个符号对应的波形；E. 分别对上述1000个符号的波形进行功率谱估计，画出功率谱；F. 改变信源“0”的概率，观察AMI码的功率谱变化情况；-have a length of 1,000 random binary sequence, "0" with a probability of 0.8, "a" with a probability of 0.2; B. above zero AMI data coding, and pulse width of symbols width of 50%, waveform sampling rate Symbol rate for the eight times that he painted before the 20 symbols corresponding waveforms (also given before 20 Source sequence); C. HDB3 code switch to depict the former 20 symbols corresponding waveform; D. Miller to switch codes to depict the former 20 symbols corresponding waveform; E. respectively above 1,000 symbols for the power spectrum waveform estimated to depict the power spectrum; F. Change source "0" the probability to observe AMI code changes in the power spectrum;

这是我收集的几个通信基础理论的Matlab仿真实现，包括bpsk、qpsk、ofdm以及信号衰减和延迟的仿真。尽管不是我本人原创，但比较都经典。文件为*.m格式-This is my collection of several communications infrastructure theory Matlab Simulation, including BPSK, QPSK, and the OFDM signal attenuation and delay in the simulation. Although it was not my original, but more are classics. M*. document format

域名系统安全（PKI）签名机构

ftp资源搜索工具源代码,可以搜索指定IP段内可匿名登陆的FTP服务器-ftp resources source code search tool can search within specified IP of the landing can be anonymous FTP server

本书介绍的wcdma系统的基本原理：包括wcdma的系统结构，关键技术，数据传输基本技术，无线接口，基本信令流程，3G业务，实现等-The book described the basic principles of WCDMA systems: including WCDMA system architecture, key technologies, the basic data transmission technology, the wireless interface, the basic signaling flow, 3G business, realize, etc.

设计一种快跳频通信系统，仿真其中的序列和性能，并给出系统框图。-Design of a fast frequency-hopping communication systems, simulation and performance of the sequence, and gives the system diagram.

Nokia手机应用软件,同时适用pop port DKU-5 -Nokia mobile applications, apply pop port DKU-5

galois code generator polinomiale