Sun, Q;
Qian, P;
Duan, W;
Zhang, J;
Wang, J;
Wong, KK;
(2021)
Ergodic Rate Analysis and IRS Configuration for Multi-IRS Dual-Hop DF Relaying Systems.
IEEE Communications Letters
10.1109/LCOMM.2021.3100347.
(In press).
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Abstract
Intelligent reflecting surface (IRS) has emerged as a promising and low-cost technology for improving wireless communications by collecting dispersed radio waves and redirecting them to the intended receivers. In this letter, we characterize the achievable rate when multiple IRSs are utilized in the manner of decode-and-forward (DF) relaying. Our performance analysis is based on the Nakagami-m fading model with perfect channel state information (CSI). Tight upper bound expressions for the ergodic rate are derived. Moreover, we compare the performance of the multi-IRS DF relaying system with that of the one with a single IRS and confirm the gain. We then optimize the IRS configuration considering the numbers of IRSs and IRS reflecting elements, which provides useful insights for practical design.
| Type: | Article |
|---|---|
| Title: | Ergodic Rate Analysis and IRS Configuration for Multi-IRS Dual-Hop DF Relaying Systems |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/LCOMM.2021.3100347 |
| Publisher version: | https://doi.org/10.1109/LCOMM.2021.3100347 |
| 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-pp.ucl.ac.uk/id/eprint/10133202 |
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