Abstract
Although multi-beam multiplexing can be implemented merely by phase shifters with hybrid beamforming configured by the sub-connected subarray architecture since all the antennas share the same magnitude, they cannot be set to a predetermined value. To tackle this issue, a non-convex constraint to enforce the magnitudes to a fixed value is first introduced in this design and then an iterative method is employed to relax it into a convex one. In doing so, the weighting magnitudes of all antennas can be preset in advance according to given requirements and a more flexible solution with phase-only excitation is obtained for multi-beam multiplexing. Numerical results are presented to verify the effectiveness of the proposed approaches. © 2024 IEEE.
| Original language | English |
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| Title of host publication | 2024 IEEE International Conference on Acoustics, Speech, and Signal Processing |
| Subtitle of host publication | Proceedings |
| Publisher | IEEE |
| Pages | 8451-8455 |
| ISBN (Electronic) | 979-8-3503-4485-1 |
| ISBN (Print) | 979-8-3503-4486-8 |
| DOIs | |
| Publication status | Published - 2024 |
| Event | 49th IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2024) - COEX, Seoul, Korea, Republic of Duration: 14 Apr 2024 → 19 Apr 2024 https://2024.ieeeicassp.org/ |
Publication series
| Name | ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings |
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| ISSN (Print) | 1520-6149 |
| ISSN (Electronic) | 2379-190X |
Conference
| Conference | 49th IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2024) |
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| Country/Territory | Korea, Republic of |
| City | Seoul |
| Period | 14/04/24 → 19/04/24 |
| Internet address |
Research Keywords
- convex iterative method
- multi-beam multiplexing
- phase-only excitation
- Sub-connected subarray architecture