scholarly journals COGNITIVE RADIOS FOR DYNAMIC SPECTRUM ACCESS - Dynamic Spectrum Sharing: A Game Theoretical Overview

2007 ◽  
Vol 45 (5) ◽  
pp. 88-94 ◽  
Author(s):  
Zhu Ji ◽  
K.J. Liu
Keyword(s):  
Spectrum Sharing ◽  
Dynamic Spectrum Access ◽  
Cognitive Radios ◽  
Dynamic Spectrum ◽  
Spectrum Access ◽  
Dynamic Spectrum Sharing ◽  
Theoretical Overview

scholarly journals Modeling Study on Dynamic Spectrum Sharing System Under Interference Temperature Constraints in Underground Coal Mines

2015 ◽  
Vol 8 (1) ◽  
pp. 140-148
Author(s):  
Chen Guizhen ◽  
Ding Enjie ◽  
Wang Gang ◽  
Xue Xue
Keyword(s):  
Spectrum Sharing ◽  
Dynamic Spectrum Access ◽  
Coal Mines ◽  
Dynamic Spectrum ◽  
Utilization Efficiency ◽  
Spectrum Access ◽  
Secondary Users ◽  
Dynamic Spectrum Sharing ◽  
Interference Temperature ◽  
Access System

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.

scholarly journals Federal Communications Commission’s experimental radio service as a vehicle for dynamic spectrum access: An analysis of 10 years of experimental licenses data

Data & Policy ◽  
2020 ◽  
Vol 2 ◽  
Author(s):  
Pedro Bustamante ◽  
Martin Weiss ◽  
Douglas Sicker ◽  
Marcela M. Gomez
Keyword(s):  
Product Development ◽  
Spectrum Sharing ◽  
Dynamic Spectrum Access ◽  
Processing Time ◽  
Cognitive Radios ◽  
Federal Communications Commission ◽  
Dynamic Spectrum ◽  
Spectrum Allocation ◽  
Spectrum Access ◽  
Great Flexibility

Abstract Dynamic spectrum access (DSA) systems, commonly known as spectrum sharing, are considered one of the most promising paths for more efficient spectrum allocation. When talking about DSA, the most discussed topics revolve around particular technologies such as cognitive radios or particular solutions such as the advanced wireless services-3 initiative. However, in this work, we explore a less discussed approach for spectrum sharing: the Federal Communications Commission (FCC)’s experimental radio service (ERS). The ERS grants licenses for experimentation, market trials, and product development in Federal and/or non-Federal bands. Frequencies in these licenses are assigned on a shared basis and not for the exclusive use of any one licensee. Using FCC’s scraped information in the period between 2007 and 2016, we were able to gain a deeper understanding of the ERS. We find that the processing time (i.e., time to get a license) has been reduced from 100 days to an average of 23 days in 2016. Moreover, the assignation process of experimental licenses is characterized great flexibility in terms of the authorized technical and nontechnical characteristics. We also explored what is behind these 10 years of information.

On Using Multiagent Systems for Spectrum Sharing in Cognitive Radios Networks

2011 ◽  
pp. 377-415 ◽  
Author(s):  
Usama Mir ◽  
Leila Merghem-Boulahia ◽  
Dominique Gaïti
Keyword(s):  
Multiagent Systems ◽  
Spectrum Sharing ◽  
Multiagent System ◽  
Cognitive Radios ◽  
Dynamic Spectrum ◽  
Spectrum Allocation ◽  
Wireless Devices ◽  
Spectrum Utilization ◽  
Dynamic Spectrum Sharing ◽  
Theoretical Approaches

In modern day wireless networks, spectrum utilization and allocation are static. Generally, static spectrum allocation is not a feasible solution considering the distributed nature of wireless devices, thus some alternatives must be ensured in order to allocate spectrum dynamically and to mitigate the current spectrum scarcity. An effective solution to this problem is cognitive radio (CR), which seeks the empty spectrum portions and shares them with the neighboring devices. The CR devices can utilize the available spectrum more efficiently if they try to work together. Therefore, in this work, we review a number of dynamic spectrum allocation techniques, especially those using multiagent systems and game-theoretical approaches, and investigate their applicability to CR networks. The distributed nature of these two domains makes them suitable for CR networks. In fact, the idea of dynamic spectrum sharing using these techniques is not entirely new and several interesting approaches already exist in literature. Thus, in our study we try to focus on existing spectrum sharing literature and cooperative multiagent system for CR networks. We are particularly interested in showing how the distributed nature of multiagent system can be combined with cognitive radios in order to alleviate the current static spectrum usage as well as maintaining cooperation amongst the CR nodes. Moreover, our work includes the description of various scenarios in which spectrum sharing is an essential factor and hence must be performed in a dynamic and opportunistic manner. We also explain the working of our proposed spectrum allocation approach using multiagent system cooperation in one of these scenarios and verify its formal behavior using Petri net modeling.

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