QAM和QPSK进行误码率测试根据设定信噪比，得出在rayleigh 的仿真曲线真正帮助理解 qam，qpsk的调制解调到底是什么原理

在MATLAB中对OFDM进行仿真的代码，仿真正确-OFDM in the MATLAB simulation of the code, the correct simulation

操作系统有所耳闻，它是微软已推出的三种操作系统内核之一，是一种实时操作系统。虽然它是一种实时操作系统，但是从96年发布v1.0到现在，它的主要用途都在民用领域，比如Pocket PC、SmartPhone、Automation。不像VxWorks，应用于航空航天、军事等领域。现在linux、VxWorks厂商也都看好嵌入式民用市场，激烈竞争在所难免。我看好Windows CE，因为微软在PC领域实在太强，用户也早已熟悉了微软的产品，把PC下的技术移植到嵌入式领域，首先在操作界面方面就占了上风。 -operating systems have heard, it is Microsoft has launched three of the operating system kernel, is a real-time operating system. Although it is a real-time operating system, but from the 96 released v1.0 now, which are mainly used in civilian areas, such as Pocket PC, SmartPhone, Automation. Like VxWorks, used in aerospace, military and other fields. Now Linux, VxWorks manufacturers are optimistic about embedded civilian market, fierce competition is inevitable. I like Windows CE, Microsoft in the PC field is too strong, users are already familiar with Microsoft products, the PC technology into the embedded field in the first operation on the interface prevailed.

小灵通机卡分离模块的设计.建立在数据库服务器，中间件服务器，和客户机三层结构上的-PHS card separation module design. Based on the database server, middleware servers, and clients on the three-tier structure

对基本调制解调进行了详细的阐述,包括BPSK,QPSK,16QAM,64QAM-The basic modulation and demodulation described in detail, including BPSK, QPSK, 16QAM, 64QAM

chuankou 通讯 个话题，大家可能再熟悉不过了，网上资料很多，因为这是linux下编程比较重要的一个方面，懂这方面的人很多；这里我只是想给初学者简单的介绍下这方面的知识：

远程数据传输的研究, 远程数据传输的研究-Study of remote data transmission, remote data transmission research

关于超宽带多用户检测的大家可看看，很好的程序-on Ultra-Wideband Multi-User Detection you can see, very good procedures

一使用串口通讯的IC饭卡系统，消费终端与远程服务器通过串口连接-use of a serial communications IC Prerequisite system, consumption and Remote Terminal Server through Serial Link

H.323 2000年规范的文档，是H.323 V4的标准，这是目前最通用的版本，是学习开发H.323的必备材料。-2000 H.323 standard documents, is the standard H.323 V4, which is currently the most common form, is to study the development of the requisite material H.323.