Prasobh Sankar, RS and Deepak, B and Chepuri, SP (2021) Joint Communication and Radar Sensing with Reconfigurable Intelligent Surfaces. In: 22nd IEEE International Workshop on Signal Processing Advances in Wireless Communications, 27-30 Sep 2021, Lucca, pp. 471-475.
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Abstract
In this paper, we use a reconfigurable intelligent surface (RIS) to enhance the radar sensing and communication capabilities of a mmWave dual function radar communication system. To simultaneously localize the target and to serve the user, we propose to adaptively partition the RIS by reserving separate RIS elements for sensing and communication. We design a multi-stage hierarchical codebook to localize the target while ensuring a strong communication link to the user. We also present a method to choose the number of times to transmit the same beam in each stage to achieve a desired target localization probability of error. The proposed algorithm typically requires fewer transmissions than an exhaustive search scheme to achieve a desired target localization probability of error. Furthermore, the average spectral efficiency of the user with the proposed algorithm is found to be comparable to that of a RIS-assisted MIMO communication system without sensing capabilities and is much better than that of traditional MIMO systems without RIS. © 2021 IEEE.
| Item Type: | Conference Paper |
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| Publication: | IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC |
| Publisher: | Institute of Electrical and Electronics Engineers Inc. |
| Additional Information: | The copyright for this article belongs to Authors |
| Keywords: | Interlocking signals; MIMO radar; MIMO systems, Communications systems; Dual function; Dual function radar communication system; Joint communication and sensing; Mm waves; Mmwave MIMO; Radar communication; Radar sensing; Reconfigurable; Reconfigurable intelligent surface, Millimeter waves |
| Department/Centre: | Division of Electrical Sciences > Electrical Communication Engineering |
| Date Deposited: | 01 Feb 2022 12:37 |
| Last Modified: | 01 Feb 2022 12:37 |
| URI: | http://eprints.iisc.ac.in/id/eprint/71207 |
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