Abstract
This work studies the wideband modeling and beam-forming design of beyond diagonal reconfigurable intelligent surface (BD-RIS), which generalizes and goes beyond conventional RIS with diagonal phase shift matrices to achieve enhanced channel gain. Specifically, we investigate the response of BD-RIS in wideband systems by going back to its hardware circuit realizations. We propose a novel wideband model which has simple expressions while capturing the response variations of BD-RIS for signals with different frequencies. With this wideband model, we propose a BD-RIS design algorithm for an orthogonal frequency division multiplexing system to maximize the average rate over all subcarriers. Finally, we provide simulation results to evaluate the performance of the proposed design and show the importance of wideband modeling for BD-RIS.
| Original language | English |
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| Title of host publication | 2024 IEEE 25th International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2024 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| Pages | 926-930 |
| Number of pages | 5 |
| ISBN (Electronic) | 9798350393187 |
| DOIs | |
| Publication status | Published - 2024 |
| Externally published | Yes |
| Event | 25th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2024 - Lucca, Italy Duration: 10 Sept 2024 → 13 Sept 2024 |
Publication series
| Name | IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC |
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| ISSN (Print) | 2325-3789 |
Conference
| Conference | 25th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2024 |
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| Country/Territory | Italy |
| City | Lucca |
| Period | 10/09/24 → 13/09/24 |
Bibliographical note
Publisher Copyright:© 2024 IEEE.
Keywords
- Beyond diagonal reconfigurable intelligent surface
- beamforming
- wideband modeling