scholarly journals Uplink Energy Efficiency of Cell-Free Massive MIMO With Transmit Power Control in Measured Propagation Channels

2021 ◽  
Author(s):  
Thomas Choi ◽  
Masaaki Ito ◽  
Issei Kanno ◽  
Takeo Oseki ◽  
Kosuke Yamazaki ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Power Control ◽  
Massive Mimo ◽  
Transmit Power ◽  
Transmit Power Control

scholarly journals Energy Efficiency of Uplink Cell-Free Massive MIMO With Transmit Power Control in Measured Propagation Channel

2021 ◽  
Vol 2 ◽  
pp. 792-804
Author(s):  
Thomas Choi ◽  
Masaaki Ito ◽  
Issei Kanno ◽  
Jorge Gomez-Ponce ◽  
Colton Bullard ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Power Control ◽  
Massive Mimo ◽  
Propagation Channel ◽  
Transmit Power ◽  
Transmit Power Control

scholarly journals Distributed Transmit Power Control for Energy-Efficient Wireless-Powered Secure Communications

Sensors ◽  
2021 ◽  
Vol 21 (17) ◽  
pp. 5861
Author(s):  
Kisong Lee 
Keyword(s):  
Energy Efficiency ◽  
Power Control ◽  
Energy Efficient ◽  
Control Algorithm ◽  
Computation Time ◽  
The Other ◽  
Secure Communications ◽  
Transmit Power ◽  
Transmit Power Control ◽  
Power Control Algorithm

In this study, we consider energy-efficient wireless-powered secure communications, in which N sets of transmitter, receiver, and energy harvesting (EH) nodes exist; each EH node is allowed only to harvest energy from the transmitted signals but is not to permitted to decode information. To maximize the sum secrecy energy efficiency (SEE) of the node sets while ensuring minimum EH requirement for each EH node, we propose a distributed transmit power control algorithm using a dual method, where each transmitter adjusts its transmit power iteratively until convergence without sharing information with the other node sets. Through simulations under various environments, we show that the proposed scheme surpasses conventional schemes in terms of the sum SEE and has significantly reduced computation time compared with the optimal scheme, which suggests the effectiveness and applicability of the proposed distributed method.

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