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Time overhead and fairness in spectrum allocation for cognitive radio
By: Tan Xuezhi; Jiang Mengxiong; Liu Yutao;
2011 / IEEE / 978-1-4577-0101-6
This item was taken from the IEEE Conference ' Time overhead and fairness in spectrum allocation for cognitive radio ' The dynamic spectrum access technology can achieve near-optimal spectrum utilization by allowing cognitive users sense and utilize available spectrum opportunistically. Time overhead and fairness are part of the key evaluation criteria for the spectrum allocation algorithms, and a naive spectrum assignment can lead to significant unfairness and system overhead. In this paper, based on graph coloring model, the evaluation system and optimization goals are established. Aim at the poor fairness in the parallel algorithm, an improved algorithm is proposed. Without increasing time overhead, the improved parallel algorithm can improve the allocation fairness between cognitive users. Simulation and analysis prove this conclusion.
Spectrum Allocation Algorithms
Dynamic Spectrum Access Technology
Near-optimal Spectrum Utilization
Improved Parallel Algorithm
Graph Coloring Model