OPNET ODB _ _参考实验室

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.

Mobile平台下GPRS上网连接方式，包括CMNET和CMWAP！-Mobile Platform GPRS Internet connection, including CMNet and CMWAP!

LDPC已经成为现在很流行的FEC码，这是一篇讲述QC-LDPC编码的经典论文，作者是IEEE终身会员林舒，对目前常用的QC-LDPC编码作了详尽的描述-LDPC has become very popular now FEC code, this is a QC-LDPC code on a classic paper, the author is IEEE Life Member LIN Shu, on the current commonly used QC-LDPC coding detailed description of

Simulates the BER for BPSK modulation in Rayleigh channel

通信系统仿真应用，卡尔曼滤波器 实现语言：C语言-communications system simulation application, Kalman Filter languages : C language

串口通讯编程技巧:CSCOMM控件匚用,可使用于SCM-SCM,SCM-COMPUTER,ETC>-Serial communication programming skills: CSCOMM control with匚can for SCM-SCM, SCM-COMPUTER, ETC>

资源描述NRF24L01无线模块的使用手册，包含原理图、51单片机源代码、pcb封装等

自己编的MIMO瑞利衰落子程序，四径，车速20，参数可以修改-Rayleigh fading MIMO compiled its own subroutines, four tracks, speed 20, the parameter can be modified

PIC18F4550与RFM42无线模块之间的通信；

ADC DAC -- Scientist s Guide-ADC DAC-- Scientist s Guide