Energy Outage-Aware Power Distribution Scheme for Off-Grid Base Station Operation

2017 ◽  
Vol 21 (6) ◽  
pp. 1401-1404 ◽  
Author(s):  
Seung Hyun Jeon ◽  
Joohyung Lee ◽  
Jun Kyun Choi
Keyword(s):  
Power Distribution ◽  
Base Station ◽  
Distribution Scheme

Research on Four Water-Filling Power Distribution Schemes in MU-MIMO System

2014 ◽  
Vol 721 ◽  
pp. 635-638
Author(s):  
Yong Bo Zhang ◽  
Jian Xin Li ◽  
Wei Min Wen
Keyword(s):  
Channel Capacity ◽  
Bit Error Rate ◽  
Error Rate ◽  
Power Distribution ◽  
Mimo System ◽  
Base Station ◽  
Block Diagonalization ◽  
Total Transmission ◽  
Water Filling ◽  
Multiuser Scheduling

It is a key issue to distribute the total transmission power among different data streams leading to larger channel capacity or lower bit error rate at the base station in MU-MIMO system. Based on MU-MIMO system model applying block diagonalization precoding (BDP) this paper presented four kinds of water-filling power distribution schemes which had been simulated for random scheduling and multiuser scheduling. The simulation results showed that respective water-filling power distribution owned maximum channel capacity and united water-filling power distribution resulted in the lowest bit error rate (BER).

scholarly journals Outage Probability and Ergodic Capacity of a Two-User NOMA Relaying System with an Energy Harvesting Full-Duplex Relay and Its Interference at the Near User

Sensors ◽  
2020 ◽  
Vol 20 (22) ◽  
pp. 6472
Author(s):  
Hoang Van Toan ◽  
Tran Manh Hoang ◽  
Tran Trung Duy ◽  
Le The Dung
Keyword(s):  
Energy Harvesting ◽  
Fading Channels ◽  
Power Distribution ◽  
Interference Cancellation ◽  
Ergodic Capacity ◽  
Base Station ◽  
Full Duplex ◽  
Distribution Factor ◽  
Relay System ◽  
Outage Probabilities

In this paper, we consider a two-user downlink full-duplex (FD) non-orthogonal multiple access (NOMA) relay system where the FD relay uses an energy harvesting (EH) technique to assist the communication between the base station and far user over flat, independent and non-identically Rayleigh fading channels. Importantly, since the relay operates in FD mode, we take into account the effect of the interference caused by relay on the near user. Considering this EH-FD-NOMA relay system, we derive the exact mathematical expressions of the outage probabilities and ergodic capacities of near and far users. Monte–Carlo simulations verify the accuracy of our analytical method. Numerical results provided in this paper allow system designers to clearly see not only the impacts of the power distribution factor and the self-interference cancellation capacity of the relay but also the influence of the strength of inter-user interference at the near user on the outage performances and ergodic capacities of both users.

Optimized Base Station Location Planning for Indoor Positioning in Visible Light Communication System

2018 ◽  
Vol 39 (4) ◽  
pp. 437-447 ◽  
Author(s):  
Zichun Le ◽  
Xianyu Zeng ◽  
Minglei Fu
Keyword(s):  
Visible Light ◽  
Equilateral Triangle ◽  
Visible Light Communication ◽  
Indoor Positioning ◽  
Base Station ◽  
Location Planning ◽  
Distribution Method ◽  
Distribution Scheme ◽  
Base Station Location ◽  
Station Location

Abstract Visible light communication (VLC) is an emerging optical communication technology, and indoor positioning of moving target devices is one of most important issues in the VLC system. In this study, we focused on LED base station location planning to improve the accuracy of the positioning method based on the received signal strength intensity (RSS) and the Kalman filter (KF). We developed a new base station location-planning scheme called equilateral triangle distribution. We proved theoretically that the equilateral triangle distribution scheme reduced the positioning error area when compared with the rectangular distribution scheme. The simulation results showed that the measuring error of the equilateral triangle distribution method using KF was less than 5 cm, even when the receiver was located at the boundary of the room. Our method verified that the VLC indoor positioning accuracy can be improved when LED base stations are distributed according to our equilateral triangle distribution scheme.

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