Time-Frequency Shift Modulation for Chirp Sequence based Radar Communications

Combining radar and communication systems plays a vital role in designing future wireless systems due to its growing success in reducing spectrum congestions. In this paper, measurements in an anechoic chamber and simulations are presented to verify the adaptation on the typical fast chirp radar signal structure for enabling a communication feature. Moreover, a correction method is suggested to preserve the use of 2D-FFT for radar signal processing, which can be easily implemented using the current radar sensors. The measurement setups have been implemented using software-defined radios (SDRs), and symbol error rate curves (SER) are shown related to the investigated measurement and simulation scenarios, which support the revamping of the conventional chirp waveform.