scholarly journals Exact Outage Probability of Two-Way Decode-and-Forward NOMA Scheme with Opportunistic Relay Selection

2019 ◽  
Vol 13 (12) ◽  
Keyword(s):  
Outage Probability ◽  
Relay Selection ◽  
Decode And Forward ◽  
Opportunistic Relay Selection

scholarly journals Outage Analysis of Cognitive Communication System Using Opportunistic Relay Selection and Secondary Users as Relays

2021 ◽  
Author(s):  
Hojjat Javadzadeh ◽  
abdulhamid zahedi
Keyword(s):  
Outage Probability ◽  
Communication Systems ◽  
Relay Selection ◽  
Bandwidth Utilization ◽  
Decode And Forward ◽  
Secondary Users ◽  
Idle State ◽  
Primary Users ◽  
Opportunistic Relay Selection ◽  
Outage Analysis

Abstract Efficient bandwidth utilization is significant in new communication systems where secondary users can be used besides of primary users considering interference issues and idle state of primary users. Using secondary users as relays to transmit their own signals in addition to the primary signals can be applied for more reliability of the system where opportunistic relay selection can significantly enhance the performance of the system. The best-condition secondary user is selected as the optimum relay for retransmission of primary/secondary signal. Outage probability is analyzed in this paper based on decode and forward techniques in secondary users while the closed-form statement for outage probability is provided and verified by numerical evaluations.

scholarly journals Decode-and-Forward Two-Way Relaying with Network Coding and Opportunistic Relay Selection

2010 ◽  
Vol 58 (11) ◽  
pp. 3070-3076 ◽  
Author(s):  
Qing F. Zhou ◽  
Yonghui Li ◽  
Francis C. M. Lau ◽  
Branka Vucetic
Keyword(s):  
Network Coding ◽  
Relay Selection ◽  
Decode And Forward ◽  
Opportunistic Relay Selection

Outage Probability of CSI-Assisted Opportunistic Amplify-and-Forward Relaying with MRC Reception

2012 ◽  
Vol 182-183 ◽  
pp. 1689-1693
Author(s):  
Li Hong Wang ◽  
Fu Min Liu ◽  
Qing Jie Zheng
Keyword(s):  
Outage Probability ◽  
Relay Selection ◽  
Maximal Ratio Combining ◽  
Asymptotic Equivalence ◽  
Amplify And Forward ◽  
Channel State ◽  
State Information ◽  
Amplify And Forward Relaying ◽  
Opportunistic Relay Selection ◽  
Simulation Results

The outage probability of the channel state information assisted opportunistic amplify-and-forward relaying system with a maximal ratio combining receiver at the destination is investigated, and the exact outage probability expression is presented. The asymptotic equivalence of two different opportunistic relay selection criterions (maxSNR and maxmin) is proved too. Monte Carlo simulation results show that the derived expression is in excellent agreement with the outage probability of systems based on the maxSNR criterion, and also provides a good approximation to the outage probability of systems based on the maxmin criterion.

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