Pilot Contamination Mitigation for High and Low Interference Users in Multi-Cell Massive MIMO Systems

Khan, Adil; Irfan, Muhammad; Ullah, Yasir; Ahmad, Shabeer; Ullah, Sibghat; Hayat, Babar

doi:10.1109/icet48972.2019.8994552

Cited by 4 publications

(2 citation statements)

References 9 publications

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“…Based on equation (30) and Assumption 2, we can get the SINR of i-th user terminal using l-th pilot sequence as…”

Section: Theoremmentioning

confidence: 99%

“…The second algorithm takes d −2 as a weight and minimize the maximum weight, where d is the distance between two users that using the same pilot sequence. Adil Khan et al proposed an effective scheme in multi-cell massive MIMO systems [30]. In this scheme, users are categorized into high interference (U H ) and low interference users (U L ) based on their large scale fading.…”

Section: Introductionmentioning

confidence: 99%

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Spectral Efficiency of Network-Assisted Full-Duplex for Cell-Free Massive MIMO System Under Pilot Contamination

Ge²,

Wang³

et al. 2021

IEEE Access

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A cell-free massive multiple-input multiple-output (MIMO) network-assisted full-duplex (NAFD) system has been proposed to satisfy the exploding demand of higher data transmission speed and more efficient communication. However, a growing number of users in a cell-free system inevitably leads to pilot contamination. In this paper, we analyze the ergodic spectral efficiency of cell-free massive MIMO NAFD system in the presence of pilot contamination. The cell-free massive MIMO NAFD system model has been investigated and both uplink and downlink channel state information (CSI) is estimated under spatially correlated channels. Under pilot contamination, the closed-form sum-rate expressions of the uplink with maximum ratio combination (MRC) receiver while downlink with maximum ratio transmission (MRT), and uplink with zero-forcing (ZF) receiver while downlink with ZF precoding schemes are derived based on large-scale random matrix theory. Numerical results show that under several environmental settings, the theoretical results match well with the simulated results and cell-free massive MIMO NAFD system has a better performance than time-division duplex (TDD) system. Moreover, simulation results show that the achievable sum-rate of using ZF/ZF could be more spectrally efficient compared to MRC/MRT because of its interference suppression capability.

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“…Based on equation (30) and Assumption 2, we can get the SINR of i-th user terminal using l-th pilot sequence as…”

Section: Theoremmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Spectral Efficiency of Network-Assisted Full-Duplex for Cell-Free Massive MIMO System Under Pilot Contamination

Ge²,

Wang³

et al. 2021

IEEE Access

View full text Add to dashboard Cite

show abstract

Smart Pilot Decontamination Strategy for High and Low Contaminated Users in Massive MIMO-5G Network

Khan

Banoori

Adnan

et al. 2023

Lecture Notes in Networks and Systems

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Swarm UAV networking with collaborative beamforming and automated ESN learning in the presence of unknown blockages

et al. 2023

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Pilot Contamination Mitigation for High and Low Interference Users in Multi-Cell Massive MIMO Systems

Cited by 4 publications

References 9 publications

Spectral Efficiency of Network-Assisted Full-Duplex for Cell-Free Massive MIMO System Under Pilot Contamination

Spectral Efficiency of Network-Assisted Full-Duplex for Cell-Free Massive MIMO System Under Pilot Contamination

Smart Pilot Decontamination Strategy for High and Low Contaminated Users in Massive MIMO-5G Network

Swarm UAV networking with collaborative beamforming and automated ESN learning in the presence of unknown blockages

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