fifty years of coding theory, a classical error

本程序包括一组子程序和中断程序，通过S7-200自由端口功能来产生从Modbus RTU. 它支持下列Modbus功能：----1.读输出(线圈)----2.读输入(触点)----3.读保持寄存器(V 存储器).----4.读输入寄存器----5.写单路输出----6.写单路保持寄存器----15.写多路输出----16.写多路保持寄存器-this includes a subroutine and the interruption procedure for the adoption of the S7-200 free port functions to generate from the Modbus RTU. It supports the following functions : a Modbus. Reading output (2) coil. Reading input (contact)---- 3. Reading maintain registers (V memory ).---- 4. Reading input register---- 5. write single-output---- 6. write to maintain the single-route Register---- 15. write multiple output---- 16. write multiple maintain registers

简易手机软件系统，具有话音，短信等基本业务处理功能，用Telelogic Tau SDL and TTCN Suite 4.4完成，含完整开发文档，已编译通过-simple software system for cell phone,including basic function in processing vioce,SMS. Developed by using Tau SDL and TTCN Suite4.4,completed documentation and compiled.

在Smartphone手机上实现自动拨号的功能-the Smartphone handset automatic dialing function

在vc6.0下c++开发的使用聊天程序，有注释。毕设必备-In vc6.0 under development using c++ chat program, with annotations. Bi-based essential

RFC3261 日文翻译版本。完全按照英文原版的3261文档翻译完成。-Japanese translation version of RFC3261. In full accordance with the original 3261 English translation of complete documents.

引入PEG（Progressive-edge-growth）算法来构造适合线性时间编码的LDPC校验矩阵，译码时采用简化最小和Min-Sum译码算法实现简化译码．仿真结果表明，该方法能够构造适合LDPC码的线性时间编码的下三角校验矩阵日，并且用此方法构造的LDPC码性能非常接近原来PEG算法构造的LDPC码．同时通过采用最小和Min-Sum算法降低译码复杂度．-The introduction of PEG (Progressive-edge-growth) algorithm to construct suitable for linear time encoding of LDPC check matrix, decoding simplified when the smallest and the Min-Sum decoding algorithm decoding simplified. Simulation results show that this method can construct LDPC codes suitable for linear time encoding on lower triangular calibration matrix, and constructed using this method the performance of LDPC code is very close to the original PEG algorithm constructed LDPC codes. At the same time through the use of the smallest and the Min-Sum decoding algorithm to reduce complexity.

一个关于计算机串口通讯的源代码- About computer string mouth communication source code

工程技术文档：DC游戏机手柄通讯命令与时序-Engineering and technical documents: DC console command handles communications with the timing

这个程序实现了ofdm下的注水原理，是一个基于速率的注水程序，并不是传统的基于功率的注水原理。-This program realise a program based on waterfilling method which is concerning the rate adaptation not the power adaptation.

利用vc设计实现一个基于位置信息的通信软件系统，其中使用MapX组件实现地图的载入，利用串口通信获取位置信息，利用socket技术实现通信；能够获取指定位置附近的出租车，从中选取出最近的出租车，并通知出租车当前位置，实现文字和语音的调度功能.