基于FPGA的高速多带ChirpBOK信号的产生与实现

Generation and Realization of High Speed Multi-band ChirpBOK Based on FPGA

Chirp信号具有抗干扰、对频偏和多普勒频移不敏感以及多径分辨能力强等优点,应用于无线数据通信、定位、雷达和成像等诸多领域。为了提高Chirp通信的信息传输速率,采用了多带Chirp信号作为信息传输的载体实现多带Chirp通信。而多带Chirp信号的产生是实现高速多带Chirp通信的关键,基于FPGA技术,提出了复用双端口ROM的方法,实现了多带Chirp信号产生。该方法具有占用存储资源少、易于用低端FPGA实现以及实现简单等优点,并通过Xilinx Virtex-5系列FPGA XC5VLX30的实验平台进行了验证。

Because of the advantages such as interference rejection, insensitive on Doppler shift, excellent multipath resolute ability and so on, Chirp signal are widely used in wireless communication, position system, radar, imaging and many other fields. Multi-band Chirp communications that use dif- ferent center frequency Chirp signal carry different information is improved the transmission rate of information. Multi-channel Chirp signal must be pro- duced achieving multi-channel Chirp communication. A dual-port ROM multiplexing method based on FPGA technology is raised to acquire a multi- channel Chirp signal, which has much superiority such as less storage resources used, simple to implement on low-end FPGA, easier to realization, etc. Experimental verification on X1LINX Virtex-5 Series FPGA XCSVKX30 has been accomplished.