Phase-Clipping CE-OFDM: A Waveform for Integrated Sensing and Communication

By using a large modulation index a Gaussian spectrum can be obtained by constant-envelope orthogonal frequency division multiplexing (CE-OFDM) systems, thus an excellent ambiguity function for radar systems is achieved. However, the bit error rate performance for communication will degrade significantly due to large modulation index applied. To solve this problem in this paper a phase-clipping CE-OFDM waveform is proposed for integrated sensing and communication systems. By clipping the phase at transmitter side and using phase compensation at receiver side, the bit error rate performance is enhanced greatly with slightly performance degradation for radar systems. The proposed waveform can be an excellent candidate for 6th generation integrated sensing and communication systems.