Aggressive RF Circuit Reduction Techniques in Millimeter Wave Cellular Systems
(2019) IEEE 16th International Symposium on Wireless Communication Systems 2019- Abstract
- In this paper, we introduce a novel hybrid multiuser multiple-input multiple-output (MU-MIMO) architecture, with an emphasis on aggressive millimeter-wave (mmWave) hardware reduction methods, omitting the beam selection stage. We propose a simplification in a 28 GHz Rotman lens, where the number of beam-ports are reduced relative to the array ports resulting in the removal of a bank of RF switches and its associated biasing network. We conducted full electromagnetic characterization of imperative lens defects and precisely quantify the expected loss. For the first time, it is shown that the beam-port decimation greatly reduces the total EM aberrations, and consequently increases the focusing capability of the lens. With maximum-ratio (MR)... (More)
- In this paper, we introduce a novel hybrid multiuser multiple-input multiple-output (MU-MIMO) architecture, with an emphasis on aggressive millimeter-wave (mmWave) hardware reduction methods, omitting the beam selection stage. We propose a simplification in a 28 GHz Rotman lens, where the number of beam-ports are reduced relative to the array ports resulting in the removal of a bank of RF switches and its associated biasing network. We conducted full electromagnetic characterization of imperative lens defects and precisely quantify the expected loss. For the first time, it is shown that the beam-port decimation greatly reduces the total EM aberrations, and consequently increases the focusing capability of the lens. With maximum-ratio (MR) baseband processing, we study uplink signal-to-interference-plus-noise ratio (SINR) of a user terminal, and evaluate the sum spectral efficiency performance of the proposed system assuming a 28 GHz double-directional propagation channel. The performance of the proposed system is compared with the classical system include the beam selection network. Although the performance of the proposed architecture is sub-optimal relative to the conventional case, we demonstrate that it greatly simplifies the practical realizations of the mmWave RF front-ends, while still maintaining highly desirable and useful operational characteristics. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/9a302418-050f-46c4-afcf-79378fac1eb0
- author
- Abbasi, Muhammad Ali Babar ; Tataria, Harsh LU ; Fusco, Vincent F ; Matthaiou, Michail and Alexandropoulos, George C
- organization
- publishing date
- 2019
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- Rotman lens arrays, Millimeter-wave systems, Beamforming, Maximum-ratio combining, RF switching
- host publication
- 2019 16th International Symposium on Wireless Communication Systems (ISWCS)
- pages
- 5 pages
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- conference name
- IEEE 16th International Symposium on Wireless Communication Systems 2019
- conference location
- Oulu, Finland
- conference dates
- 2019-08-27 - 2019-08-30
- external identifiers
-
- scopus:85074627880
- ISBN
- 978-1-7281-2527-5
- DOI
- 10.1109/ISWCS.2019.8877347
- language
- English
- LU publication?
- yes
- id
- 9a302418-050f-46c4-afcf-79378fac1eb0
- date added to LUP
- 2018-11-27 19:37:07
- date last changed
- 2022-05-03 07:53:02
@inproceedings{9a302418-050f-46c4-afcf-79378fac1eb0,
abstract = {{In this paper, we introduce a novel hybrid multiuser multiple-input multiple-output (MU-MIMO) architecture, with an emphasis on aggressive millimeter-wave (mmWave) hardware reduction methods, omitting the beam selection stage. We propose a simplification in a 28 GHz Rotman lens, where the number of beam-ports are reduced relative to the array ports resulting in the removal of a bank of RF switches and its associated biasing network. We conducted full electromagnetic characterization of imperative lens defects and precisely quantify the expected loss. For the first time, it is shown that the beam-port decimation greatly reduces the total EM aberrations, and consequently increases the focusing capability of the lens. With maximum-ratio (MR) baseband processing, we study uplink signal-to-interference-plus-noise ratio (SINR) of a user terminal, and evaluate the sum spectral efficiency performance of the proposed system assuming a 28 GHz double-directional propagation channel. The performance of the proposed system is compared with the classical system include the beam selection network. Although the performance of the proposed architecture is sub-optimal relative to the conventional case, we demonstrate that it greatly simplifies the practical realizations of the mmWave RF front-ends, while still maintaining highly desirable and useful operational characteristics.}},
author = {{Abbasi, Muhammad Ali Babar and Tataria, Harsh and Fusco, Vincent F and Matthaiou, Michail and Alexandropoulos, George C}},
booktitle = {{2019 16th International Symposium on Wireless Communication Systems (ISWCS)}},
isbn = {{978-1-7281-2527-5}},
keywords = {{Rotman lens arrays; Millimeter-wave systems; Beamforming; Maximum-ratio combining; RF switching}},
language = {{eng}},
publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
title = {{Aggressive RF Circuit Reduction Techniques in Millimeter Wave Cellular Systems}},
url = {{https://lup.lub.lu.se/search/files/65626413/1570547248.pdf}},
doi = {{10.1109/ISWCS.2019.8877347}},
year = {{2019}},
}