QAM星座图的原理和应用 QAM星座图的原理和应用

cdma系统的仿真程序，可以在此基础上研究cdma系统的各种环境下的性能，改程序已经验证过-cdma system simulation program, in this study based on the CDMA system under various environmental performance, change procedures have been tested

方便地提供xml与wbxml的转换与解析，包括不同的源码和相应的xml文件。此代码可以在Windows和LINUX系统中使用-convenient way for xml wbxml with the conversion and analysis, including different source and the corresponding xml document. This code in Windows and Linux use

本人编写的ofdm系统中的em信道估计matlab仿真程序，可直接运行-I ofdm prepared by the system of channel estimation em Matlab simulation program can be run directly

详细介绍了 当前流行的openet软件的应用 t通过学习 可以对无线协议进行仿真 -Detailed introduction of the current popular software applications Openet t Through the study of wireless protocols can be simulated

用FPGA实现数字低通FIR滤波器，对FIR滤波器的开发有一定的借鉴意义。-Using FPGA digital low-pass FIR filter, the development of the FIR filter has a certain degree of referential significance.

即时通信的服务端软件，用于连接，聊天等操作-instant messaging server software, used to connect, chat, etc

一个串口通讯程序。可以嵌入到你的应用程序中。-a serial communication program. You can be embedded into the application process.

QAM调制的基本原理 QAM调制实际上是幅度调制和相位调制的组合。相位 + 幅度状态定义了一个数字或数 字的组合。QAM的优点是具有更大的符号率，从而可获得更高的系统效率。通常由符号率 确定占用带宽。因此每个符号的比特（基本信息单位）越多，效率就越高。-QAM modulation of the basic principles are in fact QAM modulation amplitude modulation and phase modulation of the portfolio. Phase+ margin status defines a combination of numbers or figures. The advantage of QAM symbols are greater rate, thus the system efficiency will be higher. Symbol rate is usually determined by the occupied bandwidth. Thus each bit symbols (basic units of information) the more the higher the efficiency.

All about serial port

In addition to individual algorithm, Demonstration System is a "data structure" (C language version) book algorithm corresponding to the code (CPP) and the test operating procedures (VC + +6.0 to the EXE). Through the system can demonstrate that the algorithm source code and operating results -In addition to individual algorithm, Demonstration System is a