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2021 IEEE 32nd Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), 2021
We derive formulas and algorithms to numerically calculate SINRs and max-min power controls for Cell-Free Massive MIMO in LoS channels. We consider MR (maximum-ratio), ZF (zero-forcing), and optimal linear processing for both downlink and uplink. Unlike cellular Massive MIMO, users in cell-free are statistically similar, thus dropping or rescheduling ...
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We derive formulas and algorithms to numerically calculate SINRs and max-min power controls for Cell-Free Massive MIMO in LoS channels. We consider MR (maximum-ratio), ZF (zero-forcing), and optimal linear processing for both downlink and uplink. Unlike cellular Massive MIMO, users in cell-free are statistically similar, thus dropping or rescheduling ...
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2023
Distributed multiple-input multiple-output (MIMO) systems hinge on cooperative signal processing techniques to turn interference into desired signal, thereby providing excellent levels of quality of service throughout the network. Specifically, multiple geographically distributed access points jointly and coherently serve all the users in their joint ...
Interdonato, Giovanni, Buzzi, Stefano
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Distributed multiple-input multiple-output (MIMO) systems hinge on cooperative signal processing techniques to turn interference into desired signal, thereby providing excellent levels of quality of service throughout the network. Specifically, multiple geographically distributed access points jointly and coherently serve all the users in their joint ...
Interdonato, Giovanni, Buzzi, Stefano
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SWIPT in Cell-Free Massive MIMO
2018 IEEE Global Communications Conference (GLOBECOM), 2018In this paper, the performance of simultaneous wireless information and power transfer (SWIPT) for training-based cell-free massive multiple-input multiple-output (MIMO) is investigated. The key idea is to simultaneously transmit information and power via a larger number of spatially-distributed single antenna access points (APs) towards geographically-
Rajan Shrestha, Gayan Amarasuriya
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Cell-Free Massive MIMO systems
2015 49th Asilomar Conference on Signals, Systems and Computers, 2015Cell-Free Massive MIMO systems comprise a large number of distributed, low cost, and low power access point antennas, connected to a network controller. The number of antennas is significantly larger than the number of users. The system is not partitioned into cells and each user is served by all access point antennas simultaneously.
Elina Nayebi +3 more
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Power Minimization for Cell-Free Massive MIMO
2019 IEEE International Conference on Consumer Electronics - Taiwan (ICCE-TW), 2019In this paper, we investigate the total power minimization problem for the downlink cell-free massive multiple- input multiple-output (mMIMO) system, subjecting to the users' quality-of-service (QoS) constraint. Specifically, the total power consists of circuit power, data transmission power, and backhaul power.
Yao Zhang 0016 +4 more
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Cell Free Massive MIMO with Constrained Coverage
Wireless Personal Communications, 2017As new generations of mobile radio come into service, bandwidth is becoming more and more scarce and systems with very high spectral efficiency become vital. Having a high spectral efficiency, Massive MIMO has shown to be a promising candidate for 5G. Distributing antennas in such systems make them even more spectrally efficient. Cell free Massive MIMO
Mahdi N. Boroujerdi +2 more
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IEEE Transactions on Vehicular Technology
Stacked intelligent metasurfaces (SIM) is considered a revolutionary technology that enables powerful signal processing directly in the electromagnetic (EM) wave domain and has significant energy-saving advantages.
Yating Hu +6 more
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Stacked intelligent metasurfaces (SIM) is considered a revolutionary technology that enables powerful signal processing directly in the electromagnetic (EM) wave domain and has significant energy-saving advantages.
Yating Hu +6 more
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Enhancing Uplink Performance for Cell-Free Massive MIMO With Low-Resolution ADCs by RSMA
IEEE Journal on Selected Areas in CommunicationsThis paper explores the potential of employing rate-splitting multiple access to enhance the achievable rate and energy efficiency (EE) of an uplink cell-free massive multiple-input multiple-output (MIMO) system, where the access points (APs) are ...
Yao Zhang +5 more
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Cell-Free Massive MIMO with Underlay Spectrum-Sharing
ICC 2019 - 2019 IEEE International Conference on Communications (ICC), 2019In this paper, the coexistence of cell-free massive multiple-input multiple-output (MIMO) and underlay spectrum-sharing is investigated. Thereby, the fundamental performance limits are established to characterize the feasibility of this coexistence. A set of spatially-distributed secondary access points (S-APs), which are underlaid in a primary cell ...
Diluka Loku Galappaththige +1 more
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From Cells to Freedom: 6G's Evolutionary Shift With Cell-Free Massive MIMO
IEEE Transactions on Mobile ComputingCell-free massive MIMO (CF-mMIMO) is emerging as a technological pillar for future sixth generation (6G) mobile networks, promising consistently high spectral and energy efficiencies across the coverage area.
Guillem Femenias, Felip Riera-Palou
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