scholarly journals Performance Analysis of Cognitive Relay-Assisted Ambient Backscatter with MRC over Nakagami-m Fading Channels

Sensors ◽  
2020 ◽  
Vol 20 (12) ◽  
pp. 3447
Author(s):  
Dinh-Thuan Do ◽  
Thanh-Luan Nguyen ◽  
Byung Moo Lee
Keyword(s):  
Performance Analysis ◽  
Fading Channels ◽  
System Performance ◽  
Throughput Performance ◽  
Maximum Ratio Combining ◽  
Backscatter Communication ◽  
Simulation Results ◽  
Outage Probabilities ◽  
The Impact ◽  
Ambient Backscatter

This study presents ambient backscatter communication (AmBC) network as a concept of "modulation in the air" that has drawn growing interest by both academia and industry recently. In particular, we investigate and analyze an AmBC system relying on cognitive radio, where the primary destination is equipped with multiple antennas and maximum ratio combining (MRC). A wireless powered relay is necessary to serve both primary and secondary destinations. Benefiting from the surrounding radio frequency (RF) source, the relay can support the backscattering signal. To facilitate the performance analysis of received nodes, this study presents exact closed-form expressions of the outage probability. For comparison, the outage and throughput performance of these nodes are considered in numerical simulation. Taking advantage of the AmBC technology, the impact of the backscatter ratio on system performance is carefully studied considering various other parameters. Simulation results demonstrate the exactness of the derived outage probabilities and show that the optimal throughput performance can be achieved at specific parameters.

scholarly journals Security-Reliability Tradeoff Analysis in Multisource Multirelay Cooperative Networks with Multiple Cochannel Interferers

2018 ◽  
Vol 2018 ◽  
pp. 1-12
Author(s):  
Weilong Hu ◽  
Jiangbo Si ◽  
Hongyan Li
Keyword(s):  
Fading Channels ◽  
Physical Layer Security ◽  
Communication Technologies ◽  
Cooperative Networks ◽  
Cooperative Relaying ◽  
Green Communication ◽  
Intercept Probability ◽  
Outage Probabilities ◽  
Reliability Performance ◽  
The Impact

Cooperative relaying communication is one of the green communication technologies since it shortens the communication distance and saves the transmit power. In this paper, the physical-layer security (PLS) of a multisource multirelay cooperative relaying communication network is investigated by considering the influence of cochannel interference from a security-reliability tradeoff (SRT) perspective. First, the SRT performance is characterized by the outage probability (OP) and the intercept probability (IP). In particular, the IP encountered at the eavesdropper is used to evaluate the security performance, while the reliability performance is analyzed in terms of the OP experienced at the destination. Then, under the impact of multiple cochannel interferers, the intercept probabilities and the outage probabilities of both the conventional direct transmission (DT) strategy and relay selection (RS) strategy are derived in closed-form expressions over Rayleigh fading channels, respectively. Simulation results are provided to validate the theoretical analysis. It is shown that when the OP (reliability) requirement is relaxed, the IP (security) performance improves and vice versa. It confirms that there is an SRT existing between the OP and the IP. Meanwhile, a better SRT performance can be achieved by increasing the number of sources, relays, and cochannel interferers. In addition, it is also shown that the RS strategy generally outperforms the conventional DT strategy in terms of the product of the IP and the OP.

scholarly journals Ambient Backscatter Communication Systems: Capacity and Outage Performance Analysis

IEEE Access ◽  
2018 ◽  
Vol 6 ◽  
pp. 22695-22704 ◽  
Author(s):  
Wenjing Zhao ◽  
Gongpu Wang ◽  
Rongfei Fan ◽  
Li-Sheng Fan ◽  
Saman Atapattu
Keyword(s):  
Performance Analysis ◽  
Communication Systems ◽  
Outage Performance ◽  
Backscatter Communication ◽  
Ambient Backscatter

Ambient Backscatter Communication Systems: Detection and Performance Analysis

2016 ◽  
Vol 64 (11) ◽  
pp. 4836-4846 ◽  
Author(s):  
Gongpu Wang ◽  
Feifei Gao ◽  
Rongfei Fan ◽  
Chintha Tellambura
Keyword(s):  
Performance Analysis ◽  
Communication Systems ◽  
Backscatter Communication ◽  
And Performance ◽  
Ambient Backscatter

scholarly journals Hybrid protocol for wireless EH network over weibull fading channel: performance analysis

2020 ◽  
Vol 10 (1) ◽  
pp. 1085
Author(s):  
Phu Tran Tin ◽  
Tan N. Nguyen ◽  
Tran Thanh Trang
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Performance Analysis ◽  
System Performance ◽  
Fading Channel ◽  
Integral Form ◽  
Weibull Fading ◽  
Half Duplex ◽  
Simulation Results ◽  
Wireless Energy Harvesting

In this paper, the hybrid TSR-PSR protocol for wireless energy harvesting (EH) relaying network over the Weibull fading channel is investigated. The system network is working in half-duplex (HD) mode. For evaluating the system performance, the closed-form and integral-form expressions of the outage probability (OP) are investigated and derived. After that, numerical results convinced that our derived analytical results are the same with the simulation results by using Monte Carlo simulation. This paper provides a novel recommendation for the wireless EH relaying network.

scholarly journals Performance analysis of dual-branch selection diversity system using novel mathematical approach

2017 ◽  
Vol 30 (2) ◽  
pp. 235-244
Author(s):  
Aleksandra Golubovic ◽  
Nikola Sekulovic ◽  
Mihajlo Stefanovic ◽  
Dejan Milic
Keyword(s):  
Performance Analysis ◽  
Fading Channels ◽  
System Performance ◽  
Selection Combining ◽  
Mathematical Approach ◽  
Average Output ◽  
Weibull Fading ◽  
Average Bit Error Probability ◽  
Receiver Performance ◽  
Diversity Receiver

In this paper, novel mathematical approach for evaluation of probability density function (PDF) of instantaneous signal-to-interference ratio (SIR) at the receiver output in interference-limited environment is proposed. Dual-branch selection combining (SC) receiver operating over correlated Weibull fading channels applying SIR algorithm is considered. Analytical expression for joint PDF of desired signal and interference at the receiver output is derived and used for evaluation of PDF of instantaneous SIR. The expression for PDF of SIR is used for system performance analysis via outage probability, average bit error probability (ABEP) and average output SIR as system performance measures. Numerical results are graphically presented showing the effects of fading severity, average SIR at the input and level of correlation on the diversity receiver performance. In addition, results obtained for the PDF of instantaneous SIR in this paper, are compared to the results when the PDF of instantaneous SIR is directly calculated.

Error rate performance analysis of power domain NOMA over AWGN and fading channels with generalized space shift keying in wireless 5G

2020 ◽  
pp. 1-6
Author(s):  
K. Murali ◽  
S. Siva Perumal
Keyword(s):  
Performance Analysis ◽  
Phase Shift ◽  
Fading Channels ◽  
Error Rate ◽  
Phase Shift Keying ◽  
High Data ◽  
Power Domain ◽  
Shift Keying ◽  
Reliability And Robustness ◽  
The Impact

The Non-Orthogonal Multiple Access (NOMA) emerged as a latest solution to demand of high data rated with excellent reliability and robustness. In this paper, the performance analysis of the NOMA under fading channel is presented with emphasis on error rate calculations. In addition, the focus is on exploring the impact of various modulation techniques like binary phase shift keying (BPSK), Quadrature Phase Shift Keying (QPSK) and Generalized Space Shift Keying (GSSK). The simulation study has been performed on MATLAB tool and results are analyzed efficiently in the metrics of NOMA.

scholarly journals Large Intelligent Surfaces With Discrete Set of Phase-Shifts Communicating Through Double-Rayleigh Fading Channels

2020 ◽  
Author(s):  
Felipe Augusto Pereira de Figueiredo ◽  
Michelle S. P. Facina ◽  
Ricardo Correia Ferreira ◽  
Gustavo Fraidenraich
Keyword(s):  
Closed Form ◽  
Fading Channels ◽  
System Performance ◽  
Scaling Law ◽  
Specific Capacity ◽  
Symbol Error Rate ◽  
Single Input Single Output ◽  
Single Output ◽  
Phase Errors ◽  
Outage Probabilities

It is known that the Central Limit Theorem (CLT) is not always the most appropriate tool for deriving closed-form expressions. We evaluate a Single-Input Single-Output (SISO) system performance in which the Large Intelligent Surface (LIS) acts as a scatterer. The direct link between the transmitting and receiving devices is negligible. Quantization phase errors are considered since the high precision configuration of the reflection phases is not always feasible. We derive exact closed-form expressions for the spectral efficiencies, outage probabilities, and average symbol error rate (SER) of different modulations. We assume a more comprehensive scenario in which $b$ bits are dedicated to the LIS elements' phase adjustment. From Monte Carlo simulations, we prove the excellent accuracy of our approach and investigate the behavior of power scaling law and power required to reach a specific capacity, depending on the number of reflecting elements. We show that the LIS with approximately fifty elements and four dedicated bits for phase quantization outperforms the conventional system performance without LIS.

scholarly journals Large Intelligent Surfaces With Discrete Set of Phase-Shifts Communicating Through Double-Rayleigh Fading Channels

2020 ◽  
Author(s):  
Felipe Augusto Pereira de Figueiredo ◽  
Michelle S. P. Facina ◽  
Ricardo Correia Ferreira ◽  
Gustavo Fraidenraich
Keyword(s):  
Closed Form ◽  
Fading Channels ◽  
System Performance ◽  
Scaling Law ◽  
Specific Capacity ◽  
Symbol Error Rate ◽  
Single Input Single Output ◽  
Single Output ◽  
Phase Errors ◽  
Outage Probabilities

It is known that the Central Limit Theorem (CLT) is not always the most appropriate tool for deriving closed-form expressions. We evaluate a Single-Input Single-Output (SISO) system performance in which the Large Intelligent Surface (LIS) acts as a scatterer. The direct link between the transmitting and receiving devices is negligible. Quantization phase errors are considered since the high precision configuration of the reflection phases is not always feasible. We derive exact closed-form expressions for the spectral efficiencies, outage probabilities, and average symbol error rate (SER) of different modulations. We assume a more comprehensive scenario in which $b$ bits are dedicated to the LIS elements' phase adjustment. From Monte Carlo simulations, we prove the excellent accuracy of our approach and investigate the behavior of power scaling law and power required to reach a specific capacity, depending on the number of reflecting elements. We show that the LIS with approximately fifty elements and four dedicated bits for phase quantization outperforms the conventional system performance without LIS.

scholarly journals Performance Analysis of Amplify and Forward Cooperative Networks over Rayleigh and Nakagami-m Channels based Relaying Selection

2016 ◽  
Vol 15 (5) ◽  
pp. 6749-6756
Author(s):  
Ali Abdulwahhab Mohammed ◽  
Li Yu ◽  
Li Yu ◽  
Manar Al-Kali ◽  
Manar Al-Kali ◽  
...  
Keyword(s):  
Performance Analysis ◽  
Closed Form ◽  
Density Function ◽  
Fading Channels ◽  
Relay Selection ◽  
Cooperative Networks ◽  
Amplify And Forward ◽  
The Impact ◽  
Af Relaying ◽  
Relaying System

In this paper investigates the performance, analysis of amplify and forward (AF) cooperative networks with the relay selection over  Nakagami-m and Rayleigh fading channels and  M-ary phase shift keying (MPSK) modulations. New closed form expressions are derived for the general cases of Rayleigh and Nakagami-m fading channels. cumulative density function (CDF), probability density function (PDF) of the end –to - end signal –to – nois ratio (SNR) of a dual-hop opportunistic AF relaying system, moment generating function (MGF), symbol error rate (SER) and outage probability (Pout). and the first  closed-form study for opportunistic AF relaying system where the best node is selected from a number of candidate intermediate nodes to relay the data signal between the source and the destination. Simulation results reveal that the PDF , CDF, Pout and SER performance downgrades either the m parameter or the number of relays increases. Our simulations compared between Rayleigh and Nakagami-m links for a different number of relays. In addition, different modulation techniques are examined to show the effect of the modulation scheme which was used over Rayleigh and Nakagami-m fading channels on the cooperative networks. The obtained results proved the impact of m parameters, relay selection and modulation index on the pout and SER performance.

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