一种宽带CCSK解扩解调算法的FPGA设计  

Design of a Wideband CCSK Despread-Demodulator Based on FPGA

作　　者：邢志强[1] 崔海涵[1] 

机构地区：[1]北方工业大学电子信息工程学院,北京100144

出　　处：《北方工业大学学报》2016年第1期13-18,共6页Journal of North China University of Technology

摘　　要：CCSK扩频为无人机等具有高可靠性、高传输效率的宽带无线通信应用提供了一种非常重要的解决方案.针对CCSK的弱相关性、时钟晶振偏差对宽带扩频通信的影响以及信号处理时延与FPGA资源占用之间的矛盾,本文设计了一种宽带CCSK解扩解调FPGA实现方法,采用非相干QPSK解调、信号帧格式以及流水线处理结构设计,实现了宽带CCSK的可靠解扩解调.仿真及实测结果表明,该方法在确保通信带宽的前提下具有较好的通信可靠性.CCSK Spread Spectrum provides a very important solution for aircrafts like unmanned aerial vehicles that need broadband wireless communication with high reliability and high transmission efficiency.This paper designs a broadband CCSK despread-demodulator FPGA implementation method to meet the challenges in wideband wireless communication,aiming to solve the problems of weak correlation for CCSK,deviation of the clock oscillator affecting,and the contradiction between the signal processing delay and the FPGA resource usage.Incoherent QPSK demodulation,signal frame format designing and pipelined processing architecture are designed to achieve a reliable solution for broadband CCSK dispreading and demodulation.The simulation and the experimental results show that the system is reliable and effective under wide frequency band application.

关 键 词：宽带 CCSK解扩 FPGA 

分 类 号：TN914[电子电信—通信与信息系统]