We consider a multicarrier chirp-based waveform for joint radar and communication (JRC) systems and derive its time discrete periodic ambiguity function (AF). An advantage of the waveform is that it includes a set of waveform parameters (e.g., chirp rate) which together with the transmit sequence, can be selected to flexibly shape the AF to be thumbtack-like, or to be ridge-like, either along the delay axis or the Doppler axis. These shapes are applicable for different use cases, e.g., target detection or timeand frequency synchronization. The results show that better signal detection performance than OFDM and DFT-s-OFDM can be achieved on channels with large Doppler frequency. Furthermore, it is shown how transmit sequences can be selected in order to achieve 0 dB peak-to-average-power-ratio (PAPR) of the waveform.

翻译：我们认为,在联合雷达和通信系统(JRC)中,可以使用多载波的波形,并得出其时间离散的周期模糊功能(AF),波形的优点是,它包括一套波形参数(例如,Cirp 速率),与传输序列一起,可选择这些参数来灵活地使AF与缩略图相似,或沿延迟轴或多普勒轴形成象脊形。这些形状适用于不同的使用情况,例如目标探测或时间和频率同步。结果显示,在多普勒频率大的频道上,信号探测性比DM和DFT-S-OFDM的信号性能要好。此外,还表明如何选择传输序列,以实现波形的0DB峰到平均功率拉图(PAPPR)。