摘要
直接序列扩频通信技术具有抗干扰性强、隐蔽性好、易于实现码分多址等优点,因此在无线电通信中得到了广泛的应用;该论文设计了一种基于TMS320C5416DSP的无线网卡,以Intersil公司生产的基带处理器和中频芯片作为核心芯片组,实现了直接序列扩频通信;整个系统包括网络控制器模块、基带处理器模块、中频调制/解调器模块、射频模块和DSP控制器等;通过对发送部分的测试结果表明所设计的直接序列扩频通信系统具有频谱宽、码元传输速率快的优点,并达到了数据有效发送的功能,能实现可靠的抗干扰通信。该无线网卡可以用于双机或多机通信,其理想传送距离距离可以达到10m。
Direct sequence spread spectrum technology is applied widely in wireless communication because of its merits, such as anti--in- terference ability, good concealment, and easy to realize Code Division Multiple Access. A wireless spread--spectrum--communication net- work card based on TMS320C5416 DSP is designed in the paper, including network control module, baseband module, Intermediate frequen- cy modulator/demodulator, local oscillator, up/down converter, DSP controller and Radio frequency module, etc. The experiment result of transmission shows that the direct sequence spread spectrum system designed can realize effective data transmission and anti--interference communication with advantages of high data transmission rate and wide spectrum range. The wireless network card can be used in double-- computer or multi--computer communication. And the ideal transmission distance is 10m.
出处
《计算机测量与控制》
北大核心
2013年第7期1927-1929,1932,共4页
Computer Measurement &Control
基金
西北工业大学明德学院科研基金项目资助
关键词
网卡
扩频通信
中频
基带
射频
network card
spread spectrum communication
baseband
wireless communication
intermediate frequency
radio fre-quency
