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An efficient pilot assignment scheme for addressing pilot contamination in multicell massive MIMO systems

The reuse of the same pilot group across cells to address bandwidth limitations in a network has resulted in pilot contamination. This causes severe inter-cell interference at the targeted cell. Pilot contamination is associated with multicell massive multiple-input multiple-output (MIMO) systems wh...

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Main Authors: Al-Hubaishi, Ahmed Saleh Noman, Noordin, Nor Kamariah, Sali, Aduwati, K. Subramaniam, Shamala, Alsahag, Ali Mohammed Mansoor
Format: Article
Language:English
Published: MDPI 2019
Online Access:http://psasir.upm.edu.my/id/eprint/38414/1/38414.pdf
http://psasir.upm.edu.my/id/eprint/38414/
https://www.mdpi.com/2079-9292/8/4/372
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spelling my.upm.eprints.384142020-05-04T16:47:35Z http://psasir.upm.edu.my/id/eprint/38414/ An efficient pilot assignment scheme for addressing pilot contamination in multicell massive MIMO systems Al-Hubaishi, Ahmed Saleh Noman Noordin, Nor Kamariah Sali, Aduwati K. Subramaniam, Shamala Alsahag, Ali Mohammed Mansoor The reuse of the same pilot group across cells to address bandwidth limitations in a network has resulted in pilot contamination. This causes severe inter-cell interference at the targeted cell. Pilot contamination is associated with multicell massive multiple-input multiple-output (MIMO) systems which degrades the system performance even when extra arrays of antennas are added to the network. In this paper, we propose an efficient pilot assignment (EPA) scheme to address this issue by maximizing the minimum uplink rate of the target cell’s users. To achieve this, we exploit the large-scale characteristics of the fading channel to minimize the amount of outgoing inter-cell interference at the target cell. Results from the simulation show that the EPA scheme outperforms both the conventional and the smart pilot assignment (SPA) schemes by reducing the effect of inter-cell interference. These results, show that the EPA scheme has significantly improved the system performance in terms of achievable uplink rate and cumulative distribution function (CDF) for both signal-to-interference-plus-noise ratio (SINR), and uplink rate. MDPI 2019 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/38414/1/38414.pdf Al-Hubaishi, Ahmed Saleh Noman and Noordin, Nor Kamariah and Sali, Aduwati and K. Subramaniam, Shamala and Alsahag, Ali Mohammed Mansoor (2019) An efficient pilot assignment scheme for addressing pilot contamination in multicell massive MIMO systems. Electronics, 8 (4). art. no. 372. pp. 1-19. ISSN 2079-9292 https://www.mdpi.com/2079-9292/8/4/372 10.3390/electronics8040372
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description The reuse of the same pilot group across cells to address bandwidth limitations in a network has resulted in pilot contamination. This causes severe inter-cell interference at the targeted cell. Pilot contamination is associated with multicell massive multiple-input multiple-output (MIMO) systems which degrades the system performance even when extra arrays of antennas are added to the network. In this paper, we propose an efficient pilot assignment (EPA) scheme to address this issue by maximizing the minimum uplink rate of the target cell’s users. To achieve this, we exploit the large-scale characteristics of the fading channel to minimize the amount of outgoing inter-cell interference at the target cell. Results from the simulation show that the EPA scheme outperforms both the conventional and the smart pilot assignment (SPA) schemes by reducing the effect of inter-cell interference. These results, show that the EPA scheme has significantly improved the system performance in terms of achievable uplink rate and cumulative distribution function (CDF) for both signal-to-interference-plus-noise ratio (SINR), and uplink rate.
format Article
author Al-Hubaishi, Ahmed Saleh Noman
Noordin, Nor Kamariah
Sali, Aduwati
K. Subramaniam, Shamala
Alsahag, Ali Mohammed Mansoor
spellingShingle Al-Hubaishi, Ahmed Saleh Noman
Noordin, Nor Kamariah
Sali, Aduwati
K. Subramaniam, Shamala
Alsahag, Ali Mohammed Mansoor
An efficient pilot assignment scheme for addressing pilot contamination in multicell massive MIMO systems
author_facet Al-Hubaishi, Ahmed Saleh Noman
Noordin, Nor Kamariah
Sali, Aduwati
K. Subramaniam, Shamala
Alsahag, Ali Mohammed Mansoor
author_sort Al-Hubaishi, Ahmed Saleh Noman
title An efficient pilot assignment scheme for addressing pilot contamination in multicell massive MIMO systems
title_short An efficient pilot assignment scheme for addressing pilot contamination in multicell massive MIMO systems
title_full An efficient pilot assignment scheme for addressing pilot contamination in multicell massive MIMO systems
title_fullStr An efficient pilot assignment scheme for addressing pilot contamination in multicell massive MIMO systems
title_full_unstemmed An efficient pilot assignment scheme for addressing pilot contamination in multicell massive MIMO systems
title_sort efficient pilot assignment scheme for addressing pilot contamination in multicell massive mimo systems
publisher MDPI
publishDate 2019
url http://psasir.upm.edu.my/id/eprint/38414/1/38414.pdf
http://psasir.upm.edu.my/id/eprint/38414/
https://www.mdpi.com/2079-9292/8/4/372
_version_ 1665895984017702912
score 13.211869

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