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802[1].11无线网络权威指南.part1-802 [1] .11 authoritative guide to the wireless network. Part1

我的wincomm接口，经过很多的实际应用，虽然简单，但是绝对稳定有效。---为了五个-my wincomm interface, a lot of practical applications, although simple, but absolutely effective.-- For the sake of five

OFDM及其基带FFT实现原理以及OFDM的载波和符号同步问题-and OFDM baseband FFT principle and the carrier OFDM symbols and Synchronization

O Reilly出版公司总是给我们惊喜。这本书《无线环境下的Linux》，专门讲linux的无线环境的通信，包括WiFi，蓝牙，GPS，红外线-O Reilly Publishing Company always surprises us. This "wireless environment under Linux," said linux specialized wireless communications environment, including WiFi, Bluetooth, GPS, infrared, etc.

NetFPGA平台由NetFPGA开发板、双口千兆以太网卡、运行于CentOS操作系统的PC机（或服务器）以及其他软件程序组成。

基本功能高效的CAN通讯应用.同样,CAN232 不仅适应基本CAN-bus产品,也满足基于高层协议如ModBUS、DeviceNet...之间可选 3. RS232接口,波特率在1200bps-basic functions of CAN efficient communications applications. Similarly, the CAN232 not only meet the basic CAN-bus products, but also to meet for high-level protocols such as ModBUS, DeviceNet ... between three options. RS232 interface, baud rate in 1200

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.

应用背景以太网交换机所使用的以太网控制专用芯片多具有SMI接口,以实现对芯片的控制。考虑到以太网交换机的节能趋势,使用ARM芯片s3c2440作为以太网专用芯片的主控器件,使用软硬结合的方法,设计并实现了单片机系统与SMI接口的通信,介绍了SMI接口的特征和时序,并以以太网控制芯片88E6097为例,给出了在ARM芯片s3c2440上用I/O实现SMI接口的硬件电路和相关程序。关键技术基于c语言的SMI接口模拟，88E6097交换芯片的寄存器读写访问，88E6097芯片VLAN技术。采用ARM芯片s3c2440基于Linux的操作系统，通过c语言编程模拟SMI接口，对88E6097交换芯片的寄存器进行读取、写等操作，以达到对88E6097交换芯片基于802.1Q的VLAN配置。

国家环保总局污染源在线通讯协议的简化版，主要用于环保污染监测设备的数据上传-Sources of the State Environmental Protection Administration of the simplified version of online communication protocols, mainly for environmental pollution monitoring equipment, data upload

Abstract: By using gateway systems on large 32-bit platforms, networks of small, 8- and 16-bit microcontrollers can be monitored and controlled over the Internet. With embedded Linux, these gateways are easily moved from full-blown host PCs to embedded platforms like the PC104. In this class you will learn about hardware platforms that support embedded Linux, Linux kernel configuration, feature selection, installation, booting and tuning.