Uplink Interference Analysis with RF Switching for Lens-Based Millimeter-Wave Systems
(2018) IEEE International Conference on Communications (ICC) 2018- Abstract
- In this paper, we take a fundamental look at the interference characteristics of a lens-based millimeter-wave (mmWave) multiuser multiple-input multiple-output system (MU-MIMO) system. We consider a hybrid architecture, implemented via a bank of radio-frequency (RF) switches which perform beam selection followed by low-complexity uplink maximum-ratio combining (MRC) at baseband. Considering a Rotman lens antenna array in line- of-sight (LoS) propagation, we derive tight analytical approximations to the average (expected) interference power of an arbitrary terminal, with and without the presence of RF switching. The analytical expressions show that without RF switching, the Rotman lens losses its benefits and collapses to a conventional... (More)
- In this paper, we take a fundamental look at the interference characteristics of a lens-based millimeter-wave (mmWave) multiuser multiple-input multiple-output system (MU-MIMO) system. We consider a hybrid architecture, implemented via a bank of radio-frequency (RF) switches which perform beam selection followed by low-complexity uplink maximum-ratio combining (MRC) at baseband. Considering a Rotman lens antenna array in line- of-sight (LoS) propagation, we derive tight analytical approximations to the average (expected) interference power of an arbitrary terminal, with and without the presence of RF switching. The analytical expressions show that without RF switching, the Rotman lens losses its benefits and collapses to a conventional uniform linear array. Our numerical results demonstrate that the expected interference power to a given terminal decreases significantly with RF switching, due to beam selection separating the uplink direction-of-arrivals (DoAs), in contrast to the case without RF switching, which relaxes the beam selection constraint and thus allows very similar DoAs. Overall, the results in this paper emphasize the necessity of RF switching in order to obtain superior performance with lens arrays, over conventional phased arrays. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/2de6b6bf-ae32-4048-a37f-c6baa515b537
- author
- Tataria, Harsh LU ; Matthaiou, Michail ; Smith, Peter J ; Alexandropoulos, George C and Fusco, Vincent F
- organization
- publishing date
- 2018-05-23
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- Interference, RF switching, LOS propagation, Multibeam arrays, Lens systems
- host publication
- IEEE International Conference on Communications (ICC) 2018
- article number
- 8422812
- pages
- 7 pages
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- conference name
- IEEE International Conference on Communications (ICC) 2018
- conference location
- Kansas City, United States
- conference dates
- 2018-05-23 - 2018-05-27
- external identifiers
-
- scopus:85051417864
- ISBN
- 978-1-5386-3181-2
- 978-1-5386-3180-5
- DOI
- 10.1109/ICC.2018.8422812
- language
- English
- LU publication?
- no
- id
- 2de6b6bf-ae32-4048-a37f-c6baa515b537
- date added to LUP
- 2018-11-28 11:22:32
- date last changed
- 2024-04-01 16:23:38
@inproceedings{2de6b6bf-ae32-4048-a37f-c6baa515b537,
abstract = {{In this paper, we take a fundamental look at the interference characteristics of a lens-based millimeter-wave (mmWave) multiuser multiple-input multiple-output system (MU-MIMO) system. We consider a hybrid architecture, implemented via a bank of radio-frequency (RF) switches which perform beam selection followed by low-complexity uplink maximum-ratio combining (MRC) at baseband. Considering a Rotman lens antenna array in line- of-sight (LoS) propagation, we derive tight analytical approximations to the average (expected) interference power of an arbitrary terminal, with and without the presence of RF switching. The analytical expressions show that without RF switching, the Rotman lens losses its benefits and collapses to a conventional uniform linear array. Our numerical results demonstrate that the expected interference power to a given terminal decreases significantly with RF switching, due to beam selection separating the uplink direction-of-arrivals (DoAs), in contrast to the case without RF switching, which relaxes the beam selection constraint and thus allows very similar DoAs. Overall, the results in this paper emphasize the necessity of RF switching in order to obtain superior performance with lens arrays, over conventional phased arrays.}},
author = {{Tataria, Harsh and Matthaiou, Michail and Smith, Peter J and Alexandropoulos, George C and Fusco, Vincent F}},
booktitle = {{IEEE International Conference on Communications (ICC) 2018}},
isbn = {{978-1-5386-3181-2}},
keywords = {{Interference; RF switching; LOS propagation; Multibeam arrays; Lens systems}},
language = {{eng}},
month = {{05}},
publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
title = {{Uplink Interference Analysis with RF Switching for Lens-Based Millimeter-Wave Systems}},
url = {{http://dx.doi.org/10.1109/ICC.2018.8422812}},
doi = {{10.1109/ICC.2018.8422812}},
year = {{2018}},
}