A Case Study on the Influence of Multiple Users on the Effective Channel in a Massive MIMO System
(2019) In IEEE Wireless Communications Letters p.1-6- Abstract
- We investigate the importance of weak clusters when modeling a wireless massive MIMO channel. We do this by studying the influence of densely spaced terminals and the number of base-station antennas for a zero-forcing precoded massive MIMO system. In particular, we focus on the influence on the correlation and imbalance between the signals at the terminal antennas, the effective channel-gain, the eigenvalue distributions and the number of clusters.
The study is based on measured radio-channels from terminal prototypes with integrated antennas connected to a massive MIMO testbed.
We further evaluate the advantage of using block-diagonalized zero-forcing compared to conventional zero-forcing in a massive MIMO system. Unexpectedly,... (More) - We investigate the importance of weak clusters when modeling a wireless massive MIMO channel. We do this by studying the influence of densely spaced terminals and the number of base-station antennas for a zero-forcing precoded massive MIMO system. In particular, we focus on the influence on the correlation and imbalance between the signals at the terminal antennas, the effective channel-gain, the eigenvalue distributions and the number of clusters.
The study is based on measured radio-channels from terminal prototypes with integrated antennas connected to a massive MIMO testbed.
We further evaluate the advantage of using block-diagonalized zero-forcing compared to conventional zero-forcing in a massive MIMO system. Unexpectedly, terminals with low antenna envelope correlation coefficient may benefit significantly from block-diagonal zero-forcing in a massive MIMO system.
The main conclusion is that weaker clusters are important when modeling multi-user scenarios. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/36538307-3b27-461b-8e7b-cdb139280681
- author
- Bengtsson, Erik L LU ; Flordelis i Minguez, José LU ; Rusek, Fredrik LU ; karlsson, Peter C. ; Tufvesson, Fredrik LU and Edfors, Ove LU
- organization
- publishing date
- 2019-12-02
- type
- Contribution to journal
- publication status
- published
- subject
- in
- IEEE Wireless Communications Letters
- pages
- 5 pages
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- external identifiers
-
- scopus:85075948848
- ISSN
- 2162-2337
- DOI
- 10.1109/LWC.2019.2957077
- language
- English
- LU publication?
- yes
- id
- 36538307-3b27-461b-8e7b-cdb139280681
- date added to LUP
- 2019-12-06 09:39:40
- date last changed
- 2024-04-02 22:50:00
@article{36538307-3b27-461b-8e7b-cdb139280681, abstract = {{We investigate the importance of weak clusters when modeling a wireless massive MIMO channel. We do this by studying the influence of densely spaced terminals and the number of base-station antennas for a zero-forcing precoded massive MIMO system. In particular, we focus on the influence on the correlation and imbalance between the signals at the terminal antennas, the effective channel-gain, the eigenvalue distributions and the number of clusters.<br/>The study is based on measured radio-channels from terminal prototypes with integrated antennas connected to a massive MIMO testbed.<br/>We further evaluate the advantage of using block-diagonalized zero-forcing compared to conventional zero-forcing in a massive MIMO system. Unexpectedly, terminals with low antenna envelope correlation coefficient may benefit significantly from block-diagonal zero-forcing in a massive MIMO system.<br/>The main conclusion is that weaker clusters are important when modeling multi-user scenarios.}}, author = {{Bengtsson, Erik L and Flordelis i Minguez, José and Rusek, Fredrik and karlsson, Peter C. and Tufvesson, Fredrik and Edfors, Ove}}, issn = {{2162-2337}}, language = {{eng}}, month = {{12}}, pages = {{1--6}}, publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}}, series = {{IEEE Wireless Communications Letters}}, title = {{A Case Study on the Influence of Multiple Users on the Effective Channel in a Massive MIMO System}}, url = {{https://lup.lub.lu.se/search/files/72831667/MUMIMO_minor_final.pdf}}, doi = {{10.1109/LWC.2019.2957077}}, year = {{2019}}, }