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.
| Original language | English |
|---|---|
| Pages (from-to) | 8451-8455 |
| Number of pages | 5 |
| Journal | ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings |
| DOIs | |
| Publication status | Published - Apr 2024 |
| Event | 2024 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2024 - Seoul, Korea, Republic of Duration: 14 Apr 2024 → 19 Apr 2024 |
Keywords
- convex iterative method
- multi-beam multiplexing
- phase-only excitation
- Sub-connected subarray architecture
ASJC Scopus subject areas
- Software
- Signal Processing
- Electrical and Electronic Engineering
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