scholarly journals Impact of Antenna Selection on Cognitive Radio System Capacity

2011 ◽  
Author(s):  
Pawel Dmochowski ◽  
Peter Smith ◽  
Mansoor Shafi ◽  
Himal Suraweera
Keyword(s):  
Cognitive Radio ◽  
Antenna Selection ◽  
System Capacity ◽  
Radio System ◽  
Cognitive Radio System

scholarly journals The Effects of Limited Channel Knowledge on Cognitive Radio System Capacity

2013 ◽  
Vol 62 (2) ◽  
pp. 927-933 ◽  
Author(s):  
Peter J. Smith ◽  
Pawel A. Dmochowski ◽  
Himal A. Suraweera ◽  
Mansoor Shafi
Keyword(s):  
Cognitive Radio ◽  
System Capacity ◽  
Radio System ◽  
Cognitive Radio System ◽  
Channel Knowledge

Analysis of the Capacity Performance of Cognitive Radio System Based on Continuous-Time Markov Model

2014 ◽  
Vol 687-691 ◽  
pp. 4009-4014
Author(s):  
Song Chen ◽  
Sheng Wang ◽  
Han Ying Hu ◽  
Shi Lei Zhu
Keyword(s):  
Cognitive Radio ◽  
Continuous Time ◽  
Signal To Noise Ratio ◽  
Cognitive System ◽  
System Capacity ◽  
Secondary Users ◽  
Radio System ◽  
Cognitive Radio System ◽  
Spectrum Detection ◽  
Close Form

The final goal of cognitive radio system is to improve the usage of the idle spectrum resource, thus improves the capacity of the cognitive users. However, the capacity of the cognitive radio system is related with the probability of spectrum detection and the signal strength of the secondary users. Aiming at this problem, a cognitive-transmition model is proposed using continuous time Markov chain, and close form solutions of the probability of all states are given theoretically. Furthermore, the mutuality of system detection probability, signal to noise ratio of the cognitive system, capacity of the cognitive system and overall spectrum usage are analyzed synthetically. The analyze results are tested by numerical simulations.

scholarly journals Secrecy Outage Analysis on Underlay Cognitive Radio System With Full-Duplex Secondary User

IEEE Access ◽  
2017 ◽  
Vol 5 ◽  
pp. 25696-25705 ◽  
Author(s):  
Chao Zhang ◽  
Danyang Wang ◽  
Jia Ye ◽  
Hongjiang Lei ◽  
Jiliang Zhang ◽  
...  
Keyword(s):  
Cognitive Radio ◽  
Secondary User ◽  
Full Duplex ◽  
Radio System ◽  
Cognitive Radio System ◽  
Underlay Cognitive Radio ◽  
Secrecy Outage ◽  
Outage Analysis
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