基于叠加导频的雷达与通信一体化信号处理算法研究

Signal Processing Study of Integrated Radar and Communication System Based on Superimposed Pilot

摘要:

MIMO-OFDM技术日益成熟,MIMO系统为雷达通信一体化系统提供了硬件支持,OFDM调制为通信感知一体化系统提供了合适的调制方法；传统通信系统的接收方只接收通信信息而浪费了携带的信道信息,后者正是雷达系统所需的信息,通感一体化系统也提高了信息利用率；在通信感知一体化系统的存在诸多不同形式中,采用了叠加导频的系统,验证了叠加导频相较于传统导频策略的优越性,并研究了基于叠加导频的雷达系统的性能；直接使用香农公式计算通信雷达融合信道的信道容量,并研究两部分功率比对于系统互信息的影响。

Abstract:

MIMO OFDM system is getting mature more and more. MIMO system provides physical support for integrated radar and communication system, while OFDM modulation provides suitable measure of communication. In tradition, communication system receive communication information merely, leaving channel information aside, the information which is precisely the radar system requires. Thus, integrated radar and communication system utilize information more effectively in this way. There are different forms of integrated radar and communication system. Nevertheless, this article underlines the system based upon superimposed pilot, researching and demonstrating the superiority of superimposed pilot over traditional pilot and the splendid performance of its radar system. One of the innovative point this article introduce is the calculation of the account of information of integrated channel directly by Shanon Equation, as well as the research on the influence of the ratio of the power of the radar and communication system on channel capacity.