Simultaneous Power and Subchannel Allocation in Interference Limited OFDM-Based Cognitive Radio Network with Quality of Service Considerations

2017 ◽  
Vol 96 (2) ◽  
pp. 1691-1710 ◽  
Author(s):  
Nitin Sharma ◽  
Divyakumar Badheka ◽  
Alagan Anpalagan
Keyword(s):  
Quality Of Service ◽  
Cognitive Radio ◽  
Cognitive Radio Network ◽  
Radio Network ◽  
Subchannel Allocation

scholarly journals Genetic Algorithm Dependent Qos Aware Adaptive Subcarrier Allocation Scheme in Cognitive Radio Networks

2020 ◽  
Vol 9 (4) ◽  
pp. 99-106
Keyword(s):  
Quality Of Service ◽  
Cognitive Radio ◽  
Cognitive Radio Networks ◽  
Cognitive Radio Network ◽  
Intelligent System ◽  
Radio Networks ◽  
Performance Standard ◽  
Subcarrier Allocation ◽  
Radio Network

Cognitive Radio Network technology is an efficient and intelligent system with the intention of detecting automatically about the availability of channels in a wireless spectrum and changing transmission parameters to facilitate more communication.In Quality of Service aware spectrum decision making system is locating the spectrum bands all the way through in view of the application necessities by means of the self-motivated nature of the spectrum bands.Here, an innovative adaptive sub-carrier allocation mechanism is proposed for Cognitive Radio Networks by rearranging the functional parameters anchored in the Proportional Resource Algorithm and Genetic Algorithm.This proposed scheme is designed to achieve a divergent performance standard for subcarrier allocation and power allocation system of the Cognitive Radio Network users. The suggested scheme is proven to be effective by maximizing the allocation of data rate for each subcarrier. Moreover, by increasing the overall network throughput, the numbers of satisfied users within bandwidth limits are maintained with the quality of service. In fact, it locates the maximum channel availability

scholarly journals Quality of Service in Cognitive Radio Network: Issues and Challenges

2018 ◽  
Vol 11 (1) ◽  
pp. 34-39
Author(s):  
Nisar A Lala ◽  
G M Mir ◽  
Altaf A Balkhi ◽  
R A Simnani
Keyword(s):  
Quality Of Service ◽  
Cognitive Radio ◽  
Cognitive Radio Networks ◽  
Cognitive Radio Network ◽  
Radio Networks ◽  
Radio Network ◽  
Qos Provisioning ◽  
Novel Technology ◽  
Wireless Spectrum

Cognitive radio (CR) is a novel technology to resolve the issue of under-utilization of wireless spectrum. There exists number of challenges and issues in designing and implementation of the cognitive radio. Extending quality-of-service (QoS) enabled applications to CR network is even more difficult task due to non-availability of the dedicated allocation of idle spectrum. CR imposes peculiar and unique challenges to guarantee quality of service of diverse flows in contrast to other wireless networks. This paper identifies the issues and challenges of QoS provisioning in cognitive radio networks.

Spectrum Trading Analyze in the Spectrum Sharing Framework in Cognitive Radio Networks

2019 ◽  
Vol 10 (1) ◽  
pp. 1-18
Author(s):  
Prince Semba Yawada ◽  
Mesmin J. Mbyamm Kiki ◽  
Mai Trung Dong
Keyword(s):  
Cognitive Radio ◽  
Spectrum Sharing ◽  
Cognitive Radio Network ◽  
Radio Networks ◽  
Radio Network ◽  
Primary Operator ◽  
Bertrand Model ◽  
Competitive Prices ◽  
Effective Design

The effective design of a cognitive radio network must take into account economic and technical aspects. This article presents a commercial formulation of the spectrum by the primary operators who decide to sell a part of their spectrum to a group of cognitive users in order to earn money and to promote the efficient use of the spectrum. Three systems of spectrum pricing are compared and suggested, such as the cooperative price based on the optimization of the profits, the market equilibrium, and the competitive prices focused on the competition of Bertrand. The Bertrand model examines the influences of certain parameters of the system such as the quality of the channel based on the Nash equilibrium and the substitutability of the spectrum. The differences in the various aspects of these systems of pricing are presented through the graphs. The authors note through the obtained result that the profit of the primary operator depends not only on the demand quantity of the spectrum but also on the behavior of the primary operators.

scholarly journals Review and Comparison of Routing Metrics in Cognitive Radio Networks

2018 ◽  
Vol 2 (4) ◽  
Author(s):  
Alaleh Asghary Astaneh ◽  
Solmaz Gheisari
Keyword(s):  
Cognitive Radio ◽  
Cognitive Radio Networks ◽  
Cognitive Radio Network ◽  
Radio Networks ◽  
Dynamic Spectrum ◽  
Radio Network ◽  
Routing Metrics ◽  
Secondary Users ◽  
Minimum Requirements

In this paper, cognitive radio network is briefly introduced as well as routing parameters in cognitive radio networks. Due to lack of Spectrum, using not efficient methods of allocating static spectrum, in cognitive radio networks dynamic accessing spectrum is functional. Utilizing opportunistic a Spectrum requires recognition of routing parameters and metrics in cognition radio networks, which means considering fulfilling the minimum requirements of quality of service (QOS) secondary users need to use the allowed range of primary (main) users. Since primary users are prior to use the spectrum, when primary and secondary users coexist, they need to monitor the bandwidth of the authorized spectrum. One of the most important stages to excess the dynamic spectrum is to explore it. Detection of the presence of the authorized users by unauthorized users is one of the things done in this stage, which is called spectroscopy. In the next stage, we used the analyzed information I was spectroscopy, to decide on accessing the spectrum. cognition radio is defined as a smart wireless communication system, which is aware of the environment and changes its job variables like power forward, type of modulation, carrier frequency etc. using environment learning. For further explaining routing metrics, we try to compare routing metrics in cognitive radio networks and wireless network and analyze its challenges in one-way routing and in multi-route routing.

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