Cell-free massive MIMO: A survey

S Elhoushy, M Ibrahim… - … Surveys & Tutorials, 2021 - ieeexplore.ieee.org
Towards a fully connected intelligent digital world, 5G and beyond networks experience a
new era of Internet of intelligence with connected people and things. This new era brings …

User-centric cell-free massive MIMO networks: A survey of opportunities, challenges and solutions

HA Ammar, R Adve, S Shahbazpanahi… - … Surveys & Tutorials, 2021 - ieeexplore.ieee.org
Densification of network base stations is indispensable to achieve the stringent Quality of
Service (QoS) requirements of future mobile networks. However, with a dense deployment of …

Channel estimation for RIS-aided multiuser millimeter-wave systems

G Zhou, C Pan, H Ren, P Popovski… - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
Reconfigurable intelligent surface (RIS) is a promising device that can reconfigure the
electromagnetic propagation environment through adjustment of the phase shifts of its …

Deep learning for super-resolution channel estimation and DOA estimation based massive MIMO system

H Huang, J Yang, H Huang, Y Song… - IEEE Transactions on …, 2018 - ieeexplore.ieee.org
The recent concept of massive multiple-input multiple-output (MIMO) can significantly
improve the capacity of the communication network, and it has been regarded as a …

Channel estimation for orthogonal time frequency space (OTFS) massive MIMO

W Shen, L Dai, J An, P Fan… - IEEE Transactions on …, 2019 - ieeexplore.ieee.org
Orthogonal time frequency space (OTFS) modulation outperforms orthogonal frequency
division multiplexing (OFDM) in high-mobility scenarios. One challenge for OTFS massive …

Accurate channel prediction based on transformer: Making mobility negligible

H Jiang, M Cui, DWK Ng, L Dai - IEEE Journal on Selected …, 2022 - ieeexplore.ieee.org
Accurate channel prediction is vital to address the channel aging issue in mobile
communications with fast time-varying channels. Existing channel prediction schemes are …

Spatial-and frequency-wideband effects in millimeter-wave massive MIMO systems

B Wang, F Gao, S **, H Lin… - IEEE Transactions on …, 2018 - ieeexplore.ieee.org
When there are a large number of antennas in massive MIMO systems, the transmitted
wideband signal will be sensitive to the physical propagation delay of electromagnetic …

Hybrid precoding-based millimeter-wave massive MIMO-NOMA with simultaneous wireless information and power transfer

L Dai, B Wang, M Peng, S Chen - IEEE Journal on Selected …, 2018 - ieeexplore.ieee.org
Non-orthogonal multiple access (NOMA) has been recently considered in millimeter-wave
(mmWave) massive MIMO systems to further enhance the spectrum efficiency. In addition …

Spectrum and energy-efficient beamspace MIMO-NOMA for millimeter-wave communications using lens antenna array

B Wang, L Dai, Z Wang, N Ge… - IEEE Journal on Selected …, 2017 - ieeexplore.ieee.org
The recent concept of beamspace multiple input multiple output (MIMO) can significantly
reduce the number of required radio frequency (RF) chains in millimeter-wave (mmWave) …

[HTML][HTML] Optimization of big data scheduling in social networks

W Fu, S Liu, G Srivastava - Entropy, 2019 - mdpi.com
In social network big data scheduling, it is easy for target data to conflict in the same data
node. Of the different kinds of entropy measures, this paper focuses on the optimization of …