A Software-Defined Radio Solution for Integrated mmWAVE Communication and Sensing

This paper presents a millimeter-wave (mmWave) integrated communication and sensing (ICAS) system with softwaredefined radio (SDR) that can support two-stream multiple-input multiple-output (MIMO) communication and mono- as well as bi-static sensing. The system consists of a ZCU111 evaluation board with a high-performance radio-frequency system-on-chip (RFSoC) field-programmable gate array (FPGA) and two 60 GHz dual antenna beamforming modules. The SDR design comprises 4 digital-to-analogue and 4 analogue-to-digital converters with dedicated memories and a programmable sampling frequency in the 160-4000 MHz range with 160 MHz step-size. The RF frontends support an instantaneous bandwidth of up to 2 G H z, and a 90° horizontal beam scan. The sensing function is demonstrated using a typical frame-based orthogonal frequency division multiplexing (OFDM) communication signal. A range resolution of 6.7 cm and an angular resolution of 1.45° is achieved.