Cognitive Radios Spectrum Allocation in Wireless Mesh Networks

Wireless mesh networks (WMNs) are considered to be an economical solution for last-mile broadband Internet access. In this paper, we study end-to-end bandwidth allocation in WMNs with cognitive radios, which involves routing, scheduling, and spectrum allocation. To achieve a good tradeoff between fairness and throughput, we de?ne two fair bandwidth-allocation problems based on a simple max?min fairness model and the well-known lexicographical max?min (LMM) fairness model, respectively. We present Linear Programming (LP) based optimal and heuristic algorithms to solve both problems. Extensive simulation results are presented to justify the effectiveness of the proposed algorithms. Citation: R.Ganesh Babu, Rajalakshmi Institute of Technology. "Cognitive Radios Spectrum Allocation in Wireless Mesh Networks ." Global Research and Development Journal For Engineering : 291 - 296.