Closed-Form Outage Probability Expressions for Multihop Cognitive Radio Network with Best Path Selection Schemes in RF Energy Harvesting Environment

2018 ◽  
Vol 103 (3) ◽  
pp. 2197-2212 ◽  
Author(s):  
Soumen Mondal ◽  
Sanjay Dhar Roy ◽  
Sumit Kundu
Keyword(s):  
Cognitive Radio ◽  
Energy Harvesting ◽  
Outage Probability ◽  
Closed Form ◽  
Cognitive Radio Network ◽  
Path Selection ◽  
Radio Network ◽  
Rf Energy Harvesting ◽  
Rf Energy

scholarly journals Design an Optimum Energy Harvesting Model for Bidirectional Cognitive Radio Networks

2021 ◽  
Author(s):  
Mohammad Kamrul Kamrul Hasan ◽  
Md. Monwar Jahan Chowdhury ◽  
Shakil Ahmed ◽  
Saifur Rahman Sabuj ◽  
Jamel Nibhen ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Cognitive Radio ◽  
Energy Harvesting ◽  
Outage Probability ◽  
Network Model ◽  
Cognitive Radio Network ◽  
Primary User ◽  
Battery Life ◽  
Radio Network ◽  
Wireless Devices

Abstract The energy efficiency and spectrum shortage problem of wireless devices has become a concern for researchers worldwide as the number of wireless devices increases at an unparalleled speed. Many new solutions have been proposed to extend mobile devices' battery life, such as wireless energy harvesting from traditional radio frequency signals to design new smart battery chips. This paper considers a cognitive radio network model where primary users have their specific licensed band, and secondary users equipped with necessary hardware required for energy harvesting can use the licensed band of the primary user by smart sensing capability. First, the expression of outage probability is theoretically derived for uplink and downlink scenarios. Moreover, maximum energy efficiency for both uplink and downlink in the cognitive radio network model subject to interference and noise is investigated here. The theoretical analysis is then evaluated. It has been observed that outage probability improves low harvested power in the downlink scenario and high harvested power in the uplink scenario. Finally, the result signifies that energy efficiency is improved using optimum power for uplink and downlink scenarios.

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