Integrated airborne radar-communication waveform design based on the complementary P4-OFDM signal

To meet the specific demands of airborne radar and communication systems, this study introduces an integrated radar-communication waveform design based on selecting the optimal dual sequence of complementary P4-OFDM signals. This waveform leverages the cyclic shift counts of complementary P4 codes to carry communication information, achieving dual functionality in target detection and data transmission. To enhance the data transmission rate, the study innovatively developed a dual cyclic shift signal, which expands the number of states represented by P4 codes using a pair of primary and secondary original sequences. This signal offers exceptionally high speed and distance resolution for radar detection and maintains a low bit error rate in communications, making it particularly suitable for airborne environments where the priority is on communication reliability over efficiency.