Experimental measurements of A 5G outdoor massive MIMO antenna located into a shopping center

2021 ◽  
Author(s):  
Ts. Shalamanova ◽  
Hr. Petkova ◽  
M. Israel ◽  
V. Zaryabova
Keyword(s):  
Massive Mimo ◽  
Shopping Center ◽  
Experimental Measurements ◽  
Mimo Antenna

28 GHz wideband filter using quartz crystal waveguide for massive MIMO antenna unit

2017 ◽  
Author(s):  
Kengo Onaka ◽  
Hiroshi Kojima ◽  
Kei Matsutani ◽  
Atsushi Horita ◽  
Takaya Wada ◽  
...  
Keyword(s):  
Massive Mimo ◽  
Quartz Crystal ◽  
Mimo Antenna

scholarly journals Massive MIMO antenna system for 5G base stations with directive ports and switched beamsteering capabilities

2018 ◽  
Vol 12 (10) ◽  
pp. 1709-1718 ◽  
Author(s):  
Monjed A. Al‐Tarifi ◽  
Mohammad S. Sharawi ◽  
Atif Shamim
Keyword(s):  
Massive Mimo ◽  
Antenna System ◽  
Base Stations ◽  
Mimo Antenna

scholarly journals Improved Water-Filling Power Allocation for Energy-Efficient Massive MIMO Downlink Transmissions

2017 ◽  
Vol 63 (1) ◽  
pp. 79-84
Author(s):  
M. K Noor Shahida ◽  
Rosdiadee Nordin ◽  
Mahamod Ismail
Keyword(s):  
Power Allocation ◽  
Network Architecture ◽  
Massive Mimo ◽  
Multiple Input Multiple Output ◽  
Base Station ◽  
Downlink Transmission ◽  
Allocation Algorithm ◽  
Mimo Antenna ◽  
Water Filling ◽  
Water Filling Algorithm

Abstract Energy Efficiency (EE) is becoming increasingly important for wireless communications and has caught more attention due to steadily rising energy costs and environmental concerns. Recently, a new network architecture known as Massive Multiple-Input Multiple-Output (MIMO) has been proposed with the remarkable potential to achieve huge gains in EE with simple linear processing. In this paper, a power allocation algorithm is proposed for EE to achieve the optimal EE in Massive MIMO. Based on the simplified expression, we develop a new algorithm to compute the optimal power allocation algorithm and it has been compared with the existing scheme from the previous literature. An improved water filling algorithm is proposed and embedded in the power allocation algorithm to maximize EE and Spectral Efficiency (SE). The numerical analysis of the simulation results indicates an improvement of 40% in EE and 50% in SE at the downlink transmission, compared to the other existing schemes. Furthermore, the results revealed that SE does not influence the EE enhancement after using the proposed algorithm as the number of Massive MIMO antenna at the Base Station (BS) increases.

scholarly journals Approximation Algorithm Based Channel Estimation for Massive MIMO Antenna Array Systems

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 149364-149372
Author(s):  
Hao Jiang ◽  
Denghong Tang ◽  
Jie Zhou ◽  
Xiaoli Xi ◽  
Jiao Feng ◽  
...  
Keyword(s):  
Channel Estimation ◽  
Approximation Algorithm ◽  
Antenna Array ◽  
Massive Mimo ◽  
Mimo Antenna

scholarly journals Advances in Massive MIMO Antenna Design, Channel Modeling, and System Technologies

2014 ◽  
Vol 2014 ◽  
pp. 1-1 ◽  
Author(s):  
Kan Zheng ◽  
Xuefeng Yin ◽  
Periklis Chatzimisios ◽  
Yan Xin
Keyword(s):  
Massive Mimo ◽  
Channel Modeling ◽  
Antenna Design ◽  
Mimo Antenna
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