AVR实现软USB转RS232的全部资料

一个简单实用的串口通讯类-A simple and practical type of serial communication

CRC的验证，具体方法可以运用在许多程序中-CRC verification, specific methods can be used in many programs

目前的智能机在硬件上多采用双cpu的架构，一个是基带处理器，主要处理数字信号、语音信号的编码解码以及GSM通信协议，另一个是应用处理器，运行操作系统和各种应用程序。基带处理器、射频和其它外围芯片作为一个模块，成为GSM/GPRS modem，提供AT命令接口。网络的应用已经是一个需求的热点，而目前的GSM模块大多都能支持GPRS功能。应用处理器通过AT命令集与带GPRS功能的无线通讯模块通信，为实现网络的应用提供了一个最底层的支持。 -Intelligent machines in the current hardware on many dual-cpu architecture of a baseband processor are mainly deal with digital signals, voice signals, and GSM codecs communication protocol, and the other is the application processor, operating system and applications running procedures. Baseband processor, radio frequency and other peripheral chips, as a module, as a GSM/GPRS modem, provided by AT command interface. Application of network needs is a hot spot, and most of the current GSM module can support GPRS function. Application processor through the AT command set and functionality with GPRS wireless communication module, in order to achieve the application of the network provides a bottom support.

LightForm.java 一种新的手机灯光用做手电筒应用程序代码-LightForm.java a new phone used as a flashlight lighting application code

介绍了一种基于软件无线电思想的频分多址中频数字化接收机系统设计方案。它采用Altera公司的FPGA构成核 心单元,通过不同的软件配置实现对三路频分多址信号的解调。 -Introduce a software-based radio thinking FDMA digital IF receiver system design. It uses Altera s FPGA constitute the core unit, through different software configuration for the three-way realize FDMA signal demodulation.

仿真载频为2GHz，带宽1MHz，子载波数128个，cp为16，子载波间隔为7.8125kHz 一个ofdm符号长度为128us，cp长度为16us，采用16QAM调制方式，最大doppler频率为132Hz 采用LMMSE估计和LS估计算法并进行了比较

A self-designed control of PC parallel port communication is introduced in this paper.Taking advantage of the MFC ActiveX technology, it is developed in Visual C++ and offset the scarcity of the control of PC parellel paort communication. An example of frequency measurement shows the detail procedure and application of the control.

jtapi是java针对modem的开发，可以手机和电脑连接起来，进行通行-jtapi

MOTOROLA D15 MODEN 用户手册-MOTOROLA D15 modem user manual

移动无线通信小区功率控制中的DPC算法，用于下行功率控制-Mobile wireless communications cell power control in the DPC algorithm for downlink power control