Al-Jarrah, Mohammad;
Alsusa, Emad;
Masouros, Christos;
(2023)
A Unified Performance Framework for Integrated Sensing-Communications based on KL-Divergence.
IEEE Transactions on Wireless Communications
, 22
(12)
pp. 9390-9411.
10.1109/twc.2023.3270390.
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Abstract
The need for integrated sensing and communication (ISAC) services has significantly increased in the last few years. This integration imposes serious challenges such as joint system design, resource allocation, optimization, and analysis. Since sensing and telecommunication systems have different approaches for performance evaluation, introducing a unified performance measure which provides a perception about the quality of sensing and telecommunication is very beneficial. To this end, this paper provides performance analysis for ISAC systems based on the information theoretical framework of the Kullback-Leibler divergence (KLD). The considered system model consists of a multiple-input-multiple-output (MIMO) base-station (BS) providing ISAC services to multiple communication user equipments (CUEs) and targets (or sensing-served users). The KLD framework allows for a unified evaluation of the error rate performance of CUEs, and the detection performance of the targets. The relation between the detection capability for the targets and error rate of CUEs on one hand, and the proposed KLD on the other hand is illustrated analytically. Theoretical results corroborated by simulations show that the derived KLD is very accurate and can perfectly characterize both subsystems, namely the communication and radar subsystems.
| Type: | Article |
|---|---|
| Title: | A Unified Performance Framework for Integrated Sensing-Communications based on KL-Divergence |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/twc.2023.3270390 |
| Publisher version: | https://doi.org/10.1109/TWC.2023.3270390 |
| 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: | Integrated sensing and communication (ISAC), relative information, Kullback-Leibler distance, zero forcing (ZF) precoding, maximum ratio transmission (MRT) precoding, MIMO radar, multiple targets |
| 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-pp.ucl.ac.uk/id/eprint/10170015 |
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