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

Temiz, M; Alsusa, E; Baidas, MW; (2021) A Dual-Function Massive MIMO Uplink OFDM Communication and Radar Architecture. IEEE Transactions on Cognitive Communications and Networking , 8 (2) pp. 750-762. 10.1109/TCCN.2021.3128599. Green open access

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Abstract

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

Type: Article
Title: A Dual-Function Massive MIMO Uplink OFDM Communication and Radar Architecture
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/TCCN.2021.3128599
Publisher version: https://doi.org/10.1109/TCCN.2021.3128599
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10166317
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