scholarly journals Performance Analysis of Cooperative and Non-Cooperative Relaying over VLC Channels

Sensors ◽  
2020 ◽  
Vol 20 (13) ◽  
pp. 3660
Author(s):  
Waled Gheth ◽  
Khaled M. Rabie ◽  
Bamidele Adebisi ◽  
Muhammad Ijaz ◽  
Georgina Harris
Keyword(s):  
Outage Probability ◽  
Moving Objects ◽  
Minimum Energy ◽  
Cooperative Relaying ◽  
Visible Light Communications ◽  
Seamless Connectivity ◽  
Half Duplex ◽  
Efficient Data ◽  
Relaying Systems ◽  
Analytical Expressions

The line-of-sight (LoS) channel is one of the requirements for efficient data transmission in visible-light communications (VLC), but this cannot always be guaranteed in indoor applications for a variety of reasons, such as moving objects and the layout of rooms. The relay-assisted VLC system is one of the techniques that can be used to address this issue and ensures seamless connectivity. This paper investigates the performance of half-duplex (HD) conventional DF relay system and cooperative systems (i.e., selective DF (SDF) and incremental DF (IDF)) over VLC channels in terms of outage probability and energy consumption. Analytical expressions for both outage probability and the minimum energy-per-bit performance of the aforementioned relaying systems are derived. Furthermore, Monte Carlo simulations are provided throughout the paper to validate the derived expressions. The results show that exploiting SDF and IDF relaying schemes can achieve approximately 25% and 15% outage probability enhancement compared to single-hop and DF protocols, respectively. The results also demonstrate that the performance of the single-hop VLC system deteriorates when the end-to-end distances become larger. For example, when the vertical distance is 3.5m, the single-hop approach consumes 20%, 40% and 45% more energy in comparison to the DF, SDF, and IDF approaches, respectively.

scholarly journals Power Beacon-Assisted Energy Harvesting in a Half-Duplex Communication Network under Co-Channel Interference over a Rayleigh Fading Environment: Energy Efficiency and Outage Probability Analysis

Energies ◽  
2019 ◽  
Vol 12 (13) ◽  
pp. 2579 ◽  
Author(s):  
Van-Duc Phan ◽  
Tan N. Nguyen ◽  
Minh Tran ◽  
Tran Thanh Trang ◽  
Miroslav Voznak ◽  
...  
Keyword(s):  
Communication Network ◽  
Energy Efficiency ◽  
Energy Harvesting ◽  
Outage Probability ◽  
Communication Networks ◽  
Rayleigh Fading ◽  
Primary System ◽  
Wireless Communication Networks ◽  
Half Duplex ◽  
Analytical Expressions

In this time, energy efficiency (EE), measured in bits per Watt, has been considered as an important emerging metric in energy-constrained wireless communication networks because of their energy shortage. In this paper, we investigate power beacon assisted (PB) energy harvesting (EH) in half-duplex (HD) communication network under co-channel Interferer over Rayleigh fading environment. In this work, we investigate the model system with the time switching (TS) protocol. Firstly, the exact and asymptotic form expressions of the outage probability (OP) are analyzed and derived. Then the system EE is investigated and the influence of the primary system parameters on the system performance. Finally, we verify the correctness of the analytical expressions using Monte Carlo simulation. Finally, we can state that the simulation and analytical results are the same.

scholarly journals Exploiting direct link in EH based two-way DF half-duplex relaying network: Outage probability analysis

2020 ◽  
Vol 9 (1) ◽  
pp. 265-272
Author(s):  
Phu Tran Tin ◽  
Minh Tran ◽  
Tran Thanh Trang
Keyword(s):  
Outage Probability ◽  
Communication Networks ◽  
System Model ◽  
Primary System ◽  
Direct Link ◽  
Decode And Forward ◽  
System Parameters ◽  
Half Duplex ◽  
Analytical Expressions ◽  
System Outage Probability

Relay communication is considered as a popular solution for expanding the coverage, increasing the transmission capacity and reducing the power consumption of the communication networks. In this paper, we proposed and investigated the two-way decode-and-forward (DF) half-duplex (HD) relaying network with the direct link between two sources S1 and S2. Firstly, the system model, energy harvesting (EH) and information transmission (IT) are presented. The closed-form analytical expression of the system outage probability (OP) is analyzed and derived in the next stage. Finally, the correctness of the analytical expressions is verified by Monte Carlo simulation. The research results show that the analytical and simulation are the same in connection with the primary system parameters.

scholarly journals Jammer against eavesdropper in half-duplex energy harvesting cooperative relaying networks: secrecy outage probability analysis

2020 ◽  
Vol 11 (2) ◽  
pp. 879
Author(s):  
Phu Tran Tin ◽  
Duy-Hung Ha ◽  
Minh Tran ◽  
Tran Thanh Trang
Keyword(s):  
Energy Harvesting ◽  
Outage Probability ◽  
System Performance ◽  
Integral Form ◽  
Cooperative Relaying ◽  
Destination Node ◽  
Secrecy Outage Probability ◽  
Half Duplex ◽  
Relaying Networks ◽  
Secrecy Outage

In this paper, we have investigated the Half-Duplex (HD) Energy Harvesting (EH) Cooperative Relaying Networks with one source node, one destination node, one intermediate relay and in the presence of the Jammer Against Eavesdropper. We have analyzed the system performance in terms of the integral form expression of secrecy outage probability. In addition, we have investigated the effect of source rate, time switching factor, energy coefficient, and the ratio Ps/N0 on the system performance. Finally, all the mathematical, analytical expressions are verified by Monte Carlo simulation, and the analytical results match well with the simulation ones to convince the correctness of the analytical expression.

On the effect of I/Q imbalance in mixed RF/FSO cooperative relaying systems

2021 ◽  
pp. 127189
Author(s):  
Shweta Mittal ◽  
Pankaj K. Yadav ◽  
Vivek K. Dwivedi
Keyword(s):  
Cooperative Relaying ◽  
Relaying Systems

Cooperative Relaying Communication in IoT Applications for 5G Radio Networks

2021 ◽  
pp. 26-41
Author(s):  
Rajeev Kumar ◽  
Ashraf Hossain
Keyword(s):  
Outage Probability ◽  
Closed Form ◽  
Radio Networks ◽  
Cooperative Relaying ◽  
Broadcast Channels ◽  
Future Research ◽  
Channel Fading ◽  
Average Delay ◽  
State Information ◽  
Iot Applications

This chapter presents cooperative relaying networks that are helpful in Internet of Thing (IoT) applications for fifth-generation (5G) radio networks. It provides reliable connectivity as the wireless device is out of range from cellular network, high throughput gains and enhance the lifetime of wireless networks. These features can be achieved by designing the advanced protocols. The design of advanced protocols plays an important role to combat the effect of channel fading, data packet scheduling at the buffered relay, average delay, and traffic intensity. To achieve our goals, we consider two-way cooperative buffered relay networks and then investigate advanced protocols such as without channel state information (CSI) i.e., buffer state information (BSI) only and with partial transmit CSI i.e., BSI/CSI with the assistance of one dimensional Markov chain and transmission policies in fading environment. The outage probability of consecutive links and outage probability of multi-access and broadcast channels are provided in closed-form. Further, the buffered relay achieves maximum throughput gains in closed-form for all these protocols. The objective function of throughput of the buffered relay is evaluated in fractional programming that is transformed into linear program using standard CVX tool. Numerical results show that our proposed protocols performance better as compared to conventional method studied in the literature. Finally, this chapter provides possible future research directions.

scholarly journals Outage Probability and Throughput Analyses in Full-Duplex Relaying Systems With Energy Transfer

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 150150-150161
Author(s):  
Jiaman Li ◽  
Le Chung Tran ◽  
Farzad Safaei
Keyword(s):  
Energy Transfer ◽  
Outage Probability ◽  
Full Duplex ◽  
Relaying Systems
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