A Dual-Function Massive MIMO Uplink OFDM Communication and Radar Architecture

This paper proposes a joint uplink massive multiple-input-multiple-output (MIMO) communication and orthogonal frequency-division multiplexing (OFDM) radar sensing architecture. Specifically, short-range are considered, where the user equipments (UEs) transmit data to base-station (BS), which simultaneously receives returns from targets over same subcarriers. Hence, signals received at each BS antenna include be processed for extracting data. The separation detection of such achieved by utilizing channel diversity between UEs targets. To this end, UEs’ first detected demodulated, then subtracted signal acquire returns. Symbol-based processing is employed, as it provides substantial gains, its performance independent transmitted waveform. Furthermore, self-interference—due simultaneous operation receive antennas—is taken into account. rate normalized error radar-target estimation mathematically analyzed, trade-off achievable demonstrated in terms output power sub-systems signal-to-noise ratio.