Waveform design for high speed radar-communication integration

The integration of radar and communication is a good way to achieving miniaturization of the equipment, easing the tension of spectrum resource and reducing the interference between the radar and communication equipment. Recent research mainly concentrates on realizing the function of transmission and detection in one integrated equipment and improving the performance of radar with the random communication symbols, while improving the spectrum efficiency in communication is lack of study, which is also very important with the rapid growth of the need for multimedia transmission in either vehicular networking or battlefield. In this paper, based on multicarrier chirp signal (OFD-LFM), a spectrum effective integrated waveform with multiple symbols on each pulse is proposed and demodulation algorithm is work out. Simulation results show that optimal demodulation can be achieved simply by addition, subtraction and matching filtering, and the ambiguity function won't be influenced by the random communication symbols.