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Hardware Efficient Joint Radar-Communications with Hybrid Precoding and RF Chain Optimization

Kaushik, A; Masouros, C; Liu, F; (2021) Hardware Efficient Joint Radar-Communications with Hybrid Precoding and RF Chain Optimization. In: ICC 2021 - IEEE International Conference on Communications. IEEE: Montreal, QC, Canada. Green open access

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Abstract

In this paper, we aim to achieve energy efficient design with minimum hardware requirement for hybrid precoding, which enables a large number of antennas with minimal number of RF chains, and sub-arrayed multiple-input multiple-output (MIMO) radar based joint radar-communication (JRC) systems. A dynamic active RF chain selection mechanism is implemented in the baseband processing and the energy efficiency (EE) maximization problem is solved using fractional programming to obtain the optimal number of RF chains at the current channel state. Subsequently hybrid precoders are computed employing a sub-arrayed MIMO structure for EE maximization with weighted formulation of the communication and radar metrics, and the solution is based on alternating minimization. The simulation results show that the proposed method with minimum hardware achieves the best EE while maintaining the rate performance, and an efficient trade-off between sensing and communication.

Type: Proceedings paper
Title: Hardware Efficient Joint Radar-Communications with Hybrid Precoding and RF Chain Optimization
Event: IEEE International Conference on Communications
Location: Montreal, Canada
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/ICC42927.2021.9500661
Publisher version: http://dx.doi.org/10.1109/ICC42927.2021.9500661
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.
Keywords: Radio frequency, Precoding, Simulation, Transmitting antennas, Radar, Radar antennas, Hardware
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/10125197
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