Impact of RF Processing and Switching Errors in Lens-Based Massive MIMO Systems
(2018) 19th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2018- Abstract
- Lens–based massive multiple–input multiple–output (MIMO) systems have considerable potential to reduce signal processing cost at millimeter–wave frequencies. As a result, they are able to lower the effective channel dimension via beam selection, realized with a network of radio–frequency (RF) switches. However, lens arrays suffer from the inherent quantization of the beamspace, as well as errors due to imperfections in the lens construction itself. Unlike prior works, we model the above effects in the context of a Rotman lens–enabled massive MIMO system. Assuming line–of–sight propagation, we derive analytical approximations of the expected (average) signal–to–interference–plus–noise–ratio (SINR) of a terminal and ergodic sum spectral... (More)
- Lens–based massive multiple–input multiple–output (MIMO) systems have considerable potential to reduce signal processing cost at millimeter–wave frequencies. As a result, they are able to lower the effective channel dimension via beam selection, realized with a network of radio–frequency (RF) switches. However, lens arrays suffer from the inherent quantization of the beamspace, as well as errors due to imperfections in the lens construction itself. Unlike prior works, we model the above effects in the context of a Rotman lens–enabled massive MIMO system. Assuming line–of–sight propagation, we derive analytical approximations of the expected (average) signal–to–interference–plus–noise–ratio (SINR) of a terminal and ergodic sum spectral efficiency of the system. Our analysis caters for spillover losses in the Rotman lens and imperfections in the RF switching matrix, caused by impedance mismatches, as well as poor port isolation. The presented numerical results show large degradation in the expected SINR and ergodic spectral efficiency when considering the above imperfections, yielding more accurate performance assessment of lens–based massive MIMO systems. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/98310e9f-ae44-4899-bfb7-b3b213c832d0
- author
- Tataria, Harsh LU ; Matthaiou, Michail ; Smith, Peter J ; Alexandropoulos, George C and Fusco, Vincent F
- organization
- publishing date
- 2018-06-25
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- RF beamsteering, RF switching, Imperfect processing, SINR, Spectral efficiency, Millimeter-wave systems, Rotman lens arrays
- host publication
- IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) 2018
- article number
- 8445998
- pages
- 5 pages
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- conference name
- 19th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2018
- conference location
- Kalamata, Greece
- conference dates
- 2018-06-25 - 2018-06-28
- external identifiers
-
- scopus:85053468339
- ISBN
- 978-1-5386-3513-1
- 978-1-5386-3512-4
- DOI
- 10.1109/SPAWC.2018.8445998
- language
- English
- LU publication?
- no
- id
- 98310e9f-ae44-4899-bfb7-b3b213c832d0
- date added to LUP
- 2018-11-27 21:22:32
- date last changed
- 2024-04-15 17:38:40
@inproceedings{98310e9f-ae44-4899-bfb7-b3b213c832d0,
abstract = {{Lens–based massive multiple–input multiple–output (MIMO) systems have considerable potential to reduce signal processing cost at millimeter–wave frequencies. As a result, they are able to lower the effective channel dimension via beam selection, realized with a network of radio–frequency (RF) switches. However, lens arrays suffer from the inherent quantization of the beamspace, as well as errors due to imperfections in the lens construction itself. Unlike prior works, we model the above effects in the context of a Rotman lens–enabled massive MIMO system. Assuming line–of–sight propagation, we derive analytical approximations of the expected (average) signal–to–interference–plus–noise–ratio (SINR) of a terminal and ergodic sum spectral efficiency of the system. Our analysis caters for spillover losses in the Rotman lens and imperfections in the RF switching matrix, caused by impedance mismatches, as well as poor port isolation. The presented numerical results show large degradation in the expected SINR and ergodic spectral efficiency when considering the above imperfections, yielding more accurate performance assessment of lens–based massive MIMO systems.}},
author = {{Tataria, Harsh and Matthaiou, Michail and Smith, Peter J and Alexandropoulos, George C and Fusco, Vincent F}},
booktitle = {{IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) 2018}},
isbn = {{978-1-5386-3513-1}},
keywords = {{RF beamsteering; RF switching; Imperfect processing; SINR; Spectral efficiency; Millimeter-wave systems; Rotman lens arrays}},
language = {{eng}},
month = {{06}},
publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
title = {{Impact of RF Processing and Switching Errors in Lens-Based Massive MIMO Systems}},
url = {{http://dx.doi.org/10.1109/SPAWC.2018.8445998}},
doi = {{10.1109/SPAWC.2018.8445998}},
year = {{2018}},
}