scholarly journals Outage probability analysis of overlay cognitive two‐way relaying scheme with opportunistic relay selection

IET Networks ◽  
2021 ◽  
Author(s):  
Long Ma ◽  
Enyu Li ◽  
Xinjie Wang ◽  
Meng Gu ◽  
Qianqian Yang
Keyword(s):  
Outage Probability ◽  
Relay Selection ◽  
Probability Analysis ◽  
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.

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