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Recent Advances in Acquiring Channel State Information in Cellular MIMO Systems
2019
Infocommunications journal
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specifically in cellular MU-MIMO systems. ...
specifically in cellular MU-MIMO systems. ...
While the above references focused on a single cell system, a series of other works developed models for multi-cell MU-MIMO systems and proposed multi-cell pilot and/or data power control schemes that ...
doi:10.36244/icj.2019.3.2
fatcat:xuvq575enbb4ncbrmhp7wlxwha
Uplink Performance Evaluation of Massive MU-MIMO Systems
[article]
2015
arXiv
pre-print
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The present paper deals with an OFDM-based uplink within a multi-user MIMO (MU-MIMO) system where a massive MIMO approach is employed. ...
Performance results are discussed in detail and we confirm the achievable "massive MIMO" effects, even for a reduced complexity detection technique, when the number of receive antennas at BS is much larger ...
Consider a Massive MU-MIMO BS with M receive antennas and that serves K single-antenna users. ...
arXiv:1503.02192v1
fatcat:c4lulhwixrbjdconzvqb6gfljq
Low-Complexity Subspace MMSE Channel Estimation in Massive MU-MIMO System
2020
IEEE Access
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SYSTEM MODEL
A. NETWORK MODEL Considering a multi-cell massive MU-MIMO system that has L time-synchronized cells. ...
SIMULATION RESULTS In this section, the simulation results are presented. We use a massive MU-MIMO system with L = 7 hexagonal cells, and the target cell is at the center of the system. ...
doi:10.1109/access.2020.3006242
fatcat:gx3xnwd2rrgyllvkem2hjjurte
Linear precoder optimization of spectral efficiency of time division duplex hyper MIMO system with pilot contamination
2023
Indonesian Journal of Electrical Engineering and Computer Science
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The aim is to optimize spectral efficiency of several users hyper MIMO system during Uplink communication in a multi-cell contaminated pilot environment, using a new type of precoders called single cell-minimum ...
Indeed, we address two key and well-known issues of massive multiuser MIMO (MU-MIMO) environments in a test-driven development (TDD) operation scheme, namely acquisition of uplink channel state information ...
INTRODUCTION Massive MIMO systems or high integration scale antenna systems or multi-user Massive MIMO represent a new research direction in microwave data transmission [1] . ...
doi:10.11591/ijeecs.v29.i3.pp1520-1528
fatcat:giesn3yzkrbsjmc2ssgqnxvy5q
An Overview of Massive MIMO: Benefits and Challenges
2014
IEEE Journal on Selected Topics in Signal Processing
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Finally, the challenges and opportunities associated with implementing massive MIMO in future wireless communications systems are discussed. ...
We also analyze the energy efficiency achieved by massive MIMO systems, and demonstrate how the degrees of freedom provided by massive MIMO systems enable efficient single-carrier transmission. ...
Gesbert with EURECOM for valuable comments and suggestions to improve the quality of this article. The authors would also like to thank Mr. Y. Liu with Beijing Jiaotong University for plots. ...
doi:10.1109/jstsp.2014.2317671
fatcat:x3hzg3mmizanlnei4lir6z6m4a
Uplink millimeter-wave multi-cell multi-user massive multi-input multi-output systems
2022
Indonesian Journal of Electrical Engineering and Computer Science
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In this paper, we consider a hybrid analog-digital precoder and combiner design with LRPSs for mmWave multi-cell multiuser mMIMO systems for uplink transmission to spectral efficiency in terms of iterations ...
In this paper, we delve into the maximized spectral efficiency (SE) of millimeter-wave (mmWave) multicell multiuser massive MIMO Systems for uplink transmission with low-resolution phase shifters (LRPSs ...
CONCLUSION In this paper, we presented hybrid beamformer architecture with LR-PSs of the multi-cell MU massive MIMO for uplink transmission. ...
doi:10.11591/ijeecs.v26.i1.pp261-268
fatcat:ljzmsbit6rdn5nbrkx7ndjmx2m
Channel estimation for massive MIMO TDD systems assuming pilot contamination and flat fading
2018
EURASIP Journal on Wireless Communications and Networking
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This paper presents a simple and practical channel estimator for multi-cell MU massive MIMO time division duplex (TDD) systems with pilot contamination in flat Rayleigh fading channels, i.e., the gains ...
Channel estimation is crucial for massive massive multiple-input multiple-output (MIMO) systems to scale up multi-user (MU) MIMO, providing great improvement in spectral and energy efficiency. ...
Publisher's Note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations. ...
doi:10.1186/s13638-018-1021-9
fatcat:tsvez3gelvhxpjvwimh33litou
Massive MIMO with Multi-cell MMSE Processing: Exploiting All Pilots for Interference Suppression
[article]
2015
arXiv
pre-print
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In this paper, a new state-of-the-art multi-cell MMSE scheme is proposed for massive MIMO networks, which includes an uplink MMSE detector and a downlink MMSE precoder. ...
Furthermore, large-scale approximations of the uplink and downlink SINRs are derived, which are asymptotically tight in the large-system limit. ...
Massive MU-MIMO, or very large MU-MIMO, is an emerging technology that scales up MU-MIMO by orders of magnitude [8] , [9] . ...
arXiv:1505.03682v2
fatcat:bqtqft24mncgvn4ez2vfotmqju
Key Technologies in Massive MIMO
2018
ITM Web of Conferences
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The explosive growth of wireless data traffic in the future fifth generation mobile communication system (5G) has led researchers to develop new disruptive technologies. ...
As an extension of traditional MIMO technology, massive MIMO can greatly improve the throughput rate and energy efficiency, and can effectively improve the link reliability and data transmission rate, ...
With the expansion of the antenna array, the MF precoding matrix will be infinitely close to ZF. 3) MMSE Precoding: In the multi-cell massive MIMO system, the assignment problem of the training sequence ...
doi:10.1051/itmconf/20181701017
fatcat:bpk7nti67vgkbejvtps4n54z6u
Evaluation of Multi-Beam Massive MIMO Considering MAC Layer Using IEEE802.11ac and FDD-LTE
2019
Electronics
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In this study, we developed an adaptive modulation scheme for implementing multi-beam massive MIMO and used computer simulation to compare it with digital and analog–digital hybrid beam-forming methods ...
Multi-beam massive MIMO systems that apply beam selection in analog components and blind algorithms in digital components to eliminate the requirement for channel state information have been proposed as ...
In multi-beam massive MIMO systems, a number of analog multi-beams are created for initial UT tracking and a subset of these beams with high received power are selected for use. ...
doi:10.3390/electronics8020225
fatcat:3acq3yx5xzcnlofvudmehiini4
On massive MIMO and its applications to machine type communications and FBMC-based networks
2015
EAI Endorsed Transactions on Ubiquitous Environments
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In the first study case, we propose a Massive Multiuser (MU)-MIMO setup to tackle the mixed-service communication problem. ...
These findings s hed l ight into a nd m otivate f or t wo e xciting research l ines t owards a better understanding of Massive MIMO systems. ...
Linear filtering methods, such as MRC, ZF, and MMSE, seem more feasible candidates for Massive MU-MIMO systems. ...
doi:10.4108/ue.2.5.e3
fatcat:huzgrnva3ff3rifgyfosrfokkm
Massive MIMO with multi-cell MMSE processing: exploiting all pilots for interference suppression
2017
EURASIP Journal on Wireless Communications and Networking
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A new state-of-the-art multi-cell minimum mean square error (M-MMSE) scheme is proposed for massive multiple-input-multiple-output (MIMO) networks, which includes an uplink MMSE detector and a downlink ...
Furthermore, large-scale approximations of the uplink and downlink signal-to-interference-and-noise ratios (SINRs) are derived, which are tight in the large-system limit. ...
Massive MU-MIMO is an emerging 5G technology that scales up MU-MIMO by orders of magnitude [8, 9] . ...
doi:10.1186/s13638-017-0879-2
fatcat:rnp3vgrfpbdatnleaon5jhshuu
ON PILOT CONTAMINATION IN MASSIVE MULTIPLE-INPUT MULTIPLE OUTPUT SYSTEM WITH LEAST SQUARE METHOD AND ZERO FORCING RECEIVER
2017
ICTACT Journal on Communication Technology
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Further improvement is achieved in this work by introducing precoding technique for massive MIMO systems. ...
In this paper, we present a comprehensive overview of massive MIMO system and studied degradation in performance due to pilot contamination. ...
Single user MIMO (SU-MIMO) was adopted to increase spectral efficiency. Multi-user MIMO (MU-MIMO) technology with a maximum of 8x8 MIMO is recommended in 4G LTE systems. ...
doi:10.21917/ijct.2017.0228
fatcat:7hbhnaa7ebhatj65utfme4ej7q
Massive MIMO Wireless Networks: An Overview
2017
Electronics
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In addition, we emphasize the advantage of employing millimeter wave (mmWave) frequency in the beamforming, and precoding operations in single, and multi-tier massive MIMO systems. ...
Massive MIMO systems envision accurate beamforming and decoding with simpler and possibly linear algorithms. ...
) and Ryerson University for their help and support in developing this paper. ...
doi:10.3390/electronics6030063
fatcat:7mtjqladxfhaddeuvsr2ftf3by
Spectral Efficiency of Unicast and Multigroup Multicast Transmission in Cell-free Distributed Massive MIMO Systems
[article]
2022
arXiv
pre-print
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In this paper, we consider a joint unicast and multi-group multicast cell-free distributed massive multiple-input multiple-output (MIMO) system, while accounting for co-pilot assignment strategy based ...
Numerical results verify the accuracy of the derived closed-form expressions and the effectiveness of the joint unicast and multigroup multicast transmission scheme in cell-free distributed massive MIMO ...
Uplink SE in cell-free massive MIMO systems is analyzed in [13] . ...
arXiv:2203.04547v1
fatcat:ywqrn4ngnzgyppzdm7u4afeyja
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