MmWave MIMO Hybrid Precoding Design Using Phase Shifters and Switches
Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review
Author(s)
Detail(s)
| Original language | English |
|---|---|
| Title of host publication | 2021 IEEE Global Communications Conference (GLOBECOM) |
| Subtitle of host publication | Proceedings |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. |
| Number of pages | 6 |
| ISBN (electronic) | 9781728181042 |
| ISBN (print) | 978-1-7281-8105-9 |
| Publication status | Published - Dec 2021 |
| Externally published | Yes |
Publication series
| Name | IEEE Global Communications Conference, GLOBECOM - Proceedings |
|---|
Conference
| Title | 2021 IEEE Global Communications Conference (GLOBECOM 2021) |
|---|---|
| Location | Ifema Madrid (In-Person & Virtual) |
| Place | Spain |
| City | Madrid |
| Period | 7 - 11 December 2021 |
Link(s)
Abstract
To reduce the number of phase shifters for analog precoding in millimeter wave massive multiple-input multiple-output communications, we investigate the hybrid use of expensive phase shifters and low-cost switches. Different from the existing fixed phase shifter (FPS) architecture where the phases are fixed and independent of the channel state information, we consider variable phase shifter (VPS) whose phases are variable and subject to the hardware constraint. Based on the VPS architecture, a hybrid precoding design (HPD) scheme named VPS-HPD is proposed to optimize the phases according to the channel state information. Specifically, we alternately optimize the analog precoder and the digital precoder, where the former is converted into several subproblems and each subproblem further includes the alternating optimization of the phase matrix and switch matrix. Simulation results show that the spectral efficiency of the VPS-HPD scheme is very close to that of the fully digital precoding, higher than that of the existing MO-AltMin scheme for the fully-connected architecture with much fewer phase shifters, and substantially higher than that of the existing FPS-AltMin scheme for the FPS architecture with the same number of phase shifters.
Research Area(s)
- Alternating minimization, hybrid precoding, massive MIMO, millimeter wave (mmWave) communications
Citation Format(s)
MmWave MIMO Hybrid Precoding Design Using Phase Shifters and Switches. / Liu, Qiang; Qi, Chenhao; Yu, Xianghao et al.
2021 IEEE Global Communications Conference (GLOBECOM): Proceedings. Institute of Electrical and Electronics Engineers, Inc., 2021. (IEEE Global Communications Conference, GLOBECOM - Proceedings).
2021 IEEE Global Communications Conference (GLOBECOM): Proceedings. Institute of Electrical and Electronics Engineers, Inc., 2021. (IEEE Global Communications Conference, GLOBECOM - Proceedings).
Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review
