Pilot assignment in cell-free massive MIMO based on the Hungarian algorithm

S Buzzi, C D'Andrea, M Fresia… - IEEE Wireless …, 2020 - ieeexplore.ieee.org
This letter focuses on the problem of pilot assignment in cell-free massive MIMO systems.
Exploiting the well-known Hungarian algorithms, two procedures are proposed, one …

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

AS Al-hubaishi, NK Noordin, A Sali, S Subramaniam… - Electronics, 2019 - mdpi.com
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 …

AoA-based pilot assignment in massive MIMO systems using deep reinforcement learning

Y Omid, SMR Hosseini, SM Shahabi… - IEEE …, 2021 - ieeexplore.ieee.org
In this letter, the problem of pilot contamination in a multi-cell massive multiple input multiple
output (M-MIMO) system is addressed using deep reinforcement learning (DRL). To this end …

Contemporary Approaches to Mitigate Pilot Contamination in Massive Mimo Systems

EC Köse, A Yayılkan, S Kulac, H İlk - Avrupa Bilim ve Teknoloji …, 2022 - dergipark.org.tr
Massive Multiple Input Multiple Output (MIMO) is a promising technology for meeting the
demand of high data capacity for mobile networks in the future. Obtaining channel state …

A successive optimization approach to pilot design for multi-cell massive MIMO systems

H Al-Salihi, T Van Chien, TA Le… - IEEE Communications …, 2018 - ieeexplore.ieee.org
In this letter, we introduce a novel pilot design approach that minimizes the total mean
square errors of the minimum mean square error estimators of all base stations (BSs) …

Low-complexity AoA-driven pilot assignment for multi-cell massive MIMO systems

SMM Shahabi, MA Mosleh, M Ardebilipour - Physical Communication, 2020 - Elsevier
In this paper, the problem of pilot contamination in a multi-cell massive multiple input
multiple output (MIMO) system is addressed. We propose a pilot assignment scheme, in …

Low-complexity fairness-driven pilot decontamination schemes for multi-cell massive MIMO systems

SMM Shahabi, M Ardebilipour, Y Omid - Physical Communication, 2019 - Elsevier
In this paper the time division duplexing (TDD) is considered for a massive multiple input
multiple output (MIMO) system, where in the training phase, the channel state information …

Mitigating pilot contamination in Rician faded massive MIMO 5G systems using enhanced zero forcing precoding and ring partitioning

S Deshpande, P Sharma, M Aggarwal, S Ahuja - Physical Communication, 2021 - Elsevier
In this paper, pilot contamination, in massive multiple-input multiple-output (MIMO) system is
reduced to a significant extent by using base station (BS) rotation, user (UE) scheduling and …

Distributed non-orthogonal pilot design for multi-cell massive MIMO systems

Y Wu, S Ma, Y Gu - ICASSP 2020-2020 IEEE International …, 2020 - ieeexplore.ieee.org
In this work, a distributed non-orthogonal pilot design approach is proposed to tackle the
pilot contamination problem in multi-cell massive multiple input multiple output (MIMO) …

A new pilot assignment scheme for pilot decontamination of multi-cell massive MIMO systems

Y Omid, SMM Shahabi… - 2019 27th Iranian …, 2019 - ieeexplore.ieee.org
In this paper, we aim to deal with the problem of pilot contamination in a multi-cell massive
multiple input multiple output (MIMO) system. We make an effort to propose a pilot …