摘要
本文研究设计实现了无线网卡的物理层扩频通信机,即收/发信机部分,它基本符合1EEE802.11标准。给出了详细的软/硬件设计方案及实现过程,包括从计算机用户端到系统控制端以及具体的信号信息处理过程。系统与计算机之间通过RS232串口交换数据和控制信息。用Visual C++编写了人机界面,即Windows环境串口通信程序。收/发信机的信号处理部分采用intersil公司生产的专用芯片来实现。包括从基带到中频到射频的转换。
A PHY communications processor based on direct sequence spread spectrum （DSSS）, that is, the T/R signal processor part in network card is designed and realized, which is basically compromise the IEEE802.11 standard. It exchanges data and control information with computer through the serial port-RS232. It compiles a person/computer interface, that is, the serial communications program in Windows environment with Visual C＋＋. The data transfer part of this signal processor includes the modulating or demodulating from baseband to IF to RF. Accordingly, the DSSS baseband processor-HFA3861B, the I/Q Modulator/Demodulator-HFA3783, the RF/IF con- verter- HFA3683A are applied.
出处
《微计算机信息》
北大核心
2008年第18期82-83,27,共3页
Control & Automation
关键词
无线网卡
扩频通信
RS232
Wireless Network Card
Spread Spectrum Communication
RS232
