Proceedings ArticleDOI
A Distributed Algorithm for Resource Allocation in OFDM Cognitive Radio Systems
Yonghong Zhang,Cyril Leung +1 more
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TLDR
A distributed resource allocation algorithm is proposed and shown to provide good fairness and yields significantly better system throughput compared with the proportional-rate algorithm in resource-abundant situations.Abstract:
We study the problem of allocating subchannels, bits, and powers for variable rate services in an OFDM based cognitive radio (CR) system, in which available system resources are highly dynamic. In a resource-limited situation under which the nominal rate requirements of users cannot be satisfied, it is desirable to provide fair degradation among users. In a situation with abundant resources, we may choose to maximize system throughput while ensuring that user nominal rate requirements are met. The problem is formulated as a single objective nonlinear optimization problem using techniques from goal programming. A distributed resource allocation algorithm is proposed and simulation results are obtained which show that the proposed distributed algorithm provides good fairness and aggregate bit rates close to (within 8% of) optimal values.read more
Citations
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Journal ArticleDOI
Priority-Based Traffic Scheduling and Utility Optimization for Cognitive Radio Communication Infrastructure-Based Smart Grid
TL;DR: This research proposes a priority-based traffic scheduling approach for CR communication infrastructure based smart grid system according to the various traffic types of smart grid such as control commands, multimedia sensing data and meter readings, and develops CR channel allocation and traffic scheduling schemes.
Journal ArticleDOI
Noncooperative Multicell Resource Allocation of FBMC-Based Cognitive Radio Systems
TL;DR: The proposed game-theoretic algorithm for distributed multiuser power allocation is viewed as an extension of the iterative water-filling algorithm, which is applied to distributed single-user power allocation and can achieve more information rate and better convergence performance than the traditional algorithm based on frequency-division multiplexing access.
Journal ArticleDOI
Mixed-integer programming based techniques for resource allocation in underlay cognitive radio networks: A survey
TL;DR: In this survey paper, the optimization tools that have been applied to RA in CRNs are reviewed and in some instances the limitations of techniques used are pointed out and creative tools developed by researchers to solve the problems are identified.
Journal ArticleDOI
Resource allocation based on quantum particle swarm optimization and RBF neural network for overlay cognitive OFDM System
TL;DR: Simulation results demonstrate that the total power consumption of HQPSO is smaller than that of other algorithms while the system outage probability could be satisfied very well.
Journal ArticleDOI
On the use of immune clonal optimization for joint subcarrier and power allocation in OFDMA with proportional fairness rate
TL;DR: Experiments show that, compared with the previous methods, the proposed algorithm obtains higher sum capacity with comparable computational complexity, and keeps the proportional rate more fairly among users.
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Posted Content
A Quantitative Measure Of Fairness And Discrimination For Resource Allocation In Shared Computer Systems
Raj Jain,Dah Ming Chiu,W. Hawe +2 more
TL;DR: A quantitative measure called Indiex of FRairness, applicable to any resource sharing or allocation problem, which is independent of the amount of the resource, and boundedness aids intuitive understanding of the fairness index.
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