Results 1 to 10 of about 56,164 (284)
Exploring pilot assignment methods for pilot contamination mitigation in massive MIMO systems
Cogent Engineering, 2020 In massive multi-input multi-output (MIMO) antenna system, the performance is restricted by inter-cell interference called pilot contamination. However, acquisition of channel state information for channel estimation introduces overheads of pilots ...
Angelina Misso +2 more
doaj +3 more sources
Topological Pilot Assignment in Large-Scale Distributed MIMO Networks [PDF]
IEEE Transactions on Wireless Communications, 2022 We consider the pilot assignment problem in large-scale distributed multi-input multi-output (MIMO) networks, where a large number of remote radio head (RRH) antennas are randomly distributed in a wide area, and jointly serve a relatively smaller number of users (UE) coherently. By artificially imposing topological structures on the UE-RRH connectivity,
Han Yu, Xinping Yi, Giuseppe Caire
exaly +5 more sources
Overloaded Pilot Assignment with Pilot Decontamination for Cell-Free Systems
2023 IEEE Wireless Communications and Networking Conference (WCNC), 2023 The pilot contamination in cell-free massive multiple-input-multiple-output (CF-mMIMO) must be addressed for accommodating a large number of users. In previous works, we have investigated a decontamination method called subspace projection (SP). The SP separates interference from co-pilot users by using the orthogonality of the principal components of ...
Noboru Osawa +6 more
openaire +3 more sources
Scalable Pilot Assignment Scheme for Cell-Free Large-Scale Distributed MIMO With Massive Access
IEEE Access, 2021 With the explosive growth of mobile communication technology, the number of access terminals has increased dramatically, which will make the pilot contamination caused by pilot reuse extremely worse due to limited pilot resources.
Jiamin Li +4 more
doaj +3 more sources
An efficient location-based pilot assignment in Cell-Free Massive MIMO
ICT Express, 2023 Cell-free Massive multiple-input multiple-output can offer many degrees of freedom for the high data rate and coverage probability. This network topology is one of the cutting-edge technologies potentially applied for next-generation wireless ...
Tien Hoa Nguyen +2 more
doaj +3 more sources
Smart Pilot Assignment for Massive MIMO [PDF]
IEEE Communications Letters, 2015 4 pages, 3 ...
Xudong Zhu +2 more
exaly +3 more sources
IEEE Access, 2020 In the multi-cell massive multiple-input multiple-output (MIMO) systems, the mitigation of pilot contamination is an important issue in the semi-blind channel estimations.
Cheng Hu, Hong Wang, Rongfang Song
doaj +3 more sources
Pilot Assignment in Cell-Free Massive MIMO Based on the Hungarian Algorithm [PDF]
IEEE Wireless Communications Letters, 2021 4 pages, 4 figures, IEEE Wireless Communications ...
Stefano Buzzi +2 more
exaly +4 more sources
A Novel Pilot Assignment Scheme in Massive MIMO Networks
IEEE Wireless Communications Letters, 2018 In this letter, we propose a novel pilot assignment scheme for the pilot contamination problem in massive multiple-input multiple-output multi-cell networks. Based on the asymptotic signal-to-interference-plus-noise ratio (SINR), the proposed pilot assignment scheme adopts the harmonic SINR utility function to quantify the fairness of all users in the ...
Shuai Ma, Li Xu, Amir Salimi
exaly +2 more sources
Pilot Assignment Algorithm for Uplink Massive MIMO Systems
The Journal of Korean Institute of Communications and Information Sciences, 2015 This paper introduces a new pilot assignment algorithm for uplink Massive multiple-input multiple-output (MIMO) systems. Since the conventional pilot assignment algorithm has the performance degradation compared to the optimal algorithm which performs the exhaustive search, we propose a new pilot assignment algorithm using Pre-determined Interference ...
Seokju Jang, Han-Bae Kong, Inkyu Lee
exaly +3 more sources