Design of Radar-Communication Integrated Signal Based on OFDM

With the development of information technology, the electromagnetic environment is becoming more and more complex, and the demand for bringing together electronic devices of different functions is urgently increasing. Among them, the radar-communication integration is a research hotspot. The current radar-communication integration research mainly focuses on the integrated signal design. Due to the similarity between OFDM signals and phase-encoding radars, it is possible to apply OFDM to radar. Aiming at the problem that the randomness of communication data affects the detection capability of OFDM radar, this paper proposes an integrated OFDM radar-communication signal design based on P4 cyclic shift code. And we verified communication BER and radar range and velocity performance for multi-target of the integrated system. The transmitting end carries out an integrated signal design that is consistent with the communication OFDM signal. The degree of system integration is high, and it achieves communication functions without reducing radar detection capability. For the high PAPR problem, we introduce CE-OFDM signals, and derive a radar signal processing algorithm based on FFT demodulation. This paper provides a theoretical basis for applications of OFDM-based integrated signals and it is an effective integrated scheme.