Performance Analysis of Secondary Users in Dynamic Spectrum Access under Interference Temperature Constraints

Author(s):  
Zhi Yan ◽  
Xing Zhang ◽  
Wenbo Wang
2015 ◽  
Vol 8 (1) ◽  
pp. 140-148
Author(s):  
Chen Guizhen ◽  
Ding Enjie ◽  
Wang Gang ◽  
Xue Xue

This paper proposes a dynamic spectrum access system for underground wireless communication——a dynamic spectrum sharing system under interference temperature constrains. It can make the best of spectrum resources and improve the utilization efficiency. Then, a multi-dimensional Markov chain is used to model the system. On the basis, the secondary users’ performance under interference temperature constrains is obtained. As two important performance indexes to measure secondary users’ performance, cognitive users’ interrupting probability and blocking probability are calculated. Finally, cognitive users’ performance under different users’ access is analyzed, and the performances in dynamic spectrum access system and overlay access system are compared. Simulation results indicate that the dynamic spectrum sharing access system under interference temperature constrains is superior to the overlay access system and helpful to improve the spectrum sharing system in coal mines.


2018 ◽  
Vol 12 (18) ◽  
pp. 2243-2252 ◽  
Author(s):  
Anirudh Agarwal ◽  
Ranjan Gangopadhyay ◽  
Shivangi Dubey ◽  
Soumitra Debnath ◽  
Mohd Asif Khan

Author(s):  
Hui Sun ◽  
Han Han

Dynamic spectrum Access (DSA)is used to make use of the spectrum in wireless network. In most situations, control channel is a common approach to negotiation between secondary users. But, based on this feature, the attacker can destroy the communication network only influence the control center. So, in this paper, two methods without control channel are simulated in Qualent platform. The results prove that those methods are available, and the Receiver-directed channel selection is more match to the regular control channel standards in throughput.


2011 ◽  
Vol 10 (12) ◽  
pp. 4316-4323 ◽  
Author(s):  
Chunsheng Xin ◽  
Min Song ◽  
Liangping Ma ◽  
and Chien-Chung Shen

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