On the Equivalence of Hybrid and Digital Beamforming in Multi-User Scenarios
Research output: Contribution to book/conference proceedings/anthology/report › Conference contribution › Contributed › peer-review
Contributors
Abstract
Utilizing hybrid beamforming (HBF), a combination of an analog beamforming (ABF) network with digital weighting of a few selected beams, is a promising approach to reduce the prohibitively high power consumption and hardware complexity of large antenna arrays operating in the millimetre-wave (mmWave) and sub-terahertz range. This paper numerically evaluates the performance of a proposed HBF communications system using a Butler matrix as ABF network compared to fully digital beamforming (DBF) for different multi-user scenarios. First, the performance is compared for a line-of-sight (LOS) channel model, which is then extended to a multipath fading channel model. Furthermore, the influence of the number of radio-frequency (RF) chains used on the performance is investigated. Our simulation results show that HBF is able to achieve a performance which is comparable to the performance of DBF with a small loss, if the number of RF chains is chosen appropriately.
Details
Original language | English |
---|---|
Title of host publication | 28th European Wireless Conference, EW 2023 |
Publisher | VDE Verlag, Berlin [u. a.] |
Pages | 229-235 |
Number of pages | 7 |
ISBN (electronic) | 9783800762262 |
Publication status | Published - 2023 |
Peer-reviewed | Yes |
Publication series
Series | European Wireless Conference |
---|
Conference
Title | 28th European Wireless Conference, EW 2023 |
---|---|
Duration | 2 - 4 October 2023 |
City | Rome |
Country | Italy |
Keywords
ASJC Scopus subject areas
Keywords
- beamspace, Hybrid beamforming, massive MIMO, mmWave communications, multi user interference