Channel Hardening in Massive MIMO-A Measurement Based Analysis
(2018) 19th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2018 2018-June.- Abstract
Wireless-controlled robots, cars and other critical applications are in need of technologies that offer high reliability and low latency. Massive MIMO, Multiple-Input Multiple-Output, is a key technology for the upcoming 5G systems and is one part of the solution to increase the reliability of wireless systems. More specifically, when increasing the number of base station antennas in a massive MIMO systems the channel variations decrease and the so-called channel hardening effect appears. This means that the variations of the channel gain in time and frequency decrease. In this paper, channel hardening in massive MIMO systems is assessed based on analysis of measurement data. For an indoor scenario, the channels are measured with a... (More)
Wireless-controlled robots, cars and other critical applications are in need of technologies that offer high reliability and low latency. Massive MIMO, Multiple-Input Multiple-Output, is a key technology for the upcoming 5G systems and is one part of the solution to increase the reliability of wireless systems. More specifically, when increasing the number of base station antennas in a massive MIMO systems the channel variations decrease and the so-called channel hardening effect appears. This means that the variations of the channel gain in time and frequency decrease. In this paper, channel hardening in massive MIMO systems is assessed based on analysis of measurement data. For an indoor scenario, the channels are measured with a 128-port cylindrical array for nine single-antenna users. The analysis shows that in a real scenario a channel hardening of 3.2-4.6 dB, measured as a reduction of the standard deviation of the channel gain, can be expected depending on the amount of user interaction. Also, some practical implications and insights are presented.
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- author
- Gunnarsson, Sara LU ; Flordelis, Jose LU ; Van Der Perre, Liesbet LU and Tufvesson, Fredrik LU
- organization
- publishing date
- 2018-08-27
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- Channel hardening, massive MIMO, measurements, reliability
- host publication
- 2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2018
- volume
- 2018-June
- article number
- 8445925
- 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:85053465798
- ISBN
- 9781538635124
- DOI
- 10.1109/SPAWC.2018.8445925
- language
- English
- LU publication?
- yes
- id
- 9ff10313-29ea-4558-a07d-9e507f4e9cec
- date added to LUP
- 2018-10-17 14:10:22
- date last changed
- 2022-04-25 17:48:29
@inproceedings{9ff10313-29ea-4558-a07d-9e507f4e9cec, abstract = {{<p>Wireless-controlled robots, cars and other critical applications are in need of technologies that offer high reliability and low latency. Massive MIMO, Multiple-Input Multiple-Output, is a key technology for the upcoming 5G systems and is one part of the solution to increase the reliability of wireless systems. More specifically, when increasing the number of base station antennas in a massive MIMO systems the channel variations decrease and the so-called channel hardening effect appears. This means that the variations of the channel gain in time and frequency decrease. In this paper, channel hardening in massive MIMO systems is assessed based on analysis of measurement data. For an indoor scenario, the channels are measured with a 128-port cylindrical array for nine single-antenna users. The analysis shows that in a real scenario a channel hardening of 3.2-4.6 dB, measured as a reduction of the standard deviation of the channel gain, can be expected depending on the amount of user interaction. Also, some practical implications and insights are presented.</p>}}, author = {{Gunnarsson, Sara and Flordelis, Jose and Van Der Perre, Liesbet and Tufvesson, Fredrik}}, booktitle = {{2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2018}}, isbn = {{9781538635124}}, keywords = {{Channel hardening; massive MIMO; measurements; reliability}}, language = {{eng}}, month = {{08}}, publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}}, title = {{Channel Hardening in Massive MIMO-A Measurement Based Analysis}}, url = {{https://lup.lub.lu.se/search/files/66259202/channel_hardening_massive_final.pdf}}, doi = {{10.1109/SPAWC.2018.8445925}}, volume = {{2018-June}}, year = {{2018}}, }