A New MAC Protocol with Collision Resolution for OFDMA Wireless Mesh Networks

Liu, J.; Bing, Benny

doi:10.1109/icc.2009.5198642

Cited by 1 publication

(2 citation statements)

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“…Because the multicarrier technique such as OFDM provides a promising physical (PHY) layer technique for future CR systems, much attention of research has been paid to multicarrier systems . For instance, in , the proportional rate constraint was introduced for fair subcarrier allocation in multiuser OFDM systems.…”

Section: Introductionmentioning

confidence: 99%

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Cooperative bargaining solution for efficient and fair spectrum management in cognitive wireless networks

Guan

Yuan

Zhang

et al. 2013

Int J Communication

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SUMMARY This paper studies the fairness among the primary users (PUs) and the secondary users (SUs) for resource allocation in cognitive radio systems. We propose a novel co‐opetition strategy based on the Kalai–Smorodinsky bargaining solution to balance the system efficiency and the fairness among users. The strategy formulates the spectrum sharing problem as a nonlinear and integral sum utility maximization subject to a set of constraints describing the co‐opetition among the PUs and the SUs. Then, we solve the maximization problem by proposing a heuristical method that consists of four steps: multi‐PU competition, PU's subcarrier contribution, multi‐SU competition, and SU's subcarrier contribution. Extensive simulation results are presented by comparing the co‐opetition strategy with several conventional ones, including the Kalai–Smorodinsky bargaining solution, sum rate maximization as well as the Max–Min. Results indicate that the co‐opetition strategy can jointly balance the system efficiency and fairness in multiuser resource allocation, as it is able to support more satisfied users and in the meanwhile improve the utility of those unsatisfied. Moreover, the co‐opetition can help enable the coexistence of the PUs and the SUs in cognitive radio systems. Copyright © 2013 John Wiley & Sons, Ltd.

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Section: Introductionmentioning

confidence: 99%

“…Moreover, the co-opetition can help enable the coexistence of the PUs and the SUs in cognitive radio systems. [9][10][11][12][13][14][15][16][17][18][19][20]. For instance, in [9,10], the proportional rate constraint was introduced for fair subcarrier allocation in multiuser OFDM systems.…”

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confidence: 99%