Capacity of Ad Hoc wireless networks
Proceedings of the 7th annual international conference on Mobile computing and networking
Microwave Mobile Communications
Microwave Mobile Communications
Opportunistic media access for multirate ad hoc networks
Proceedings of the 8th annual international conference on Mobile computing and networking
Mobility increases the capacity of ad hoc wireless networks
IEEE/ACM Transactions on Networking (TON)
Wireless Communications
PE-WASUN '04 Proceedings of the 1st ACM international workshop on Performance evaluation of wireless ad hoc, sensor, and ubiquitous networks
Nonlinear Time Series Analysis
Nonlinear Time Series Analysis
Determining the end-to-end throughput capacity in multi-hop networks: methodology and applications
SIGMETRICS '06/Performance '06 Proceedings of the joint international conference on Measurement and modeling of computer systems
Analytical throughput for the channel MAC paradigm
MSN'07 Proceedings of the 3rd international conference on Mobile ad-hoc and sensor networks
Distributed power control for cellular networks in the presence of channel uncertainties
IEEE Transactions on Wireless Communications
IEEE Transactions on Information Theory
Multiaccess fading channels. II. Delay-limited capacities
IEEE Transactions on Information Theory
The capacity of wireless networks
IEEE Transactions on Information Theory
Opportunistic beamforming using dumb antennas
IEEE Transactions on Information Theory
Exploiting decentralized channel state information for random access
IEEE Transactions on Information Theory
New cross-Layer design approach to ad hoc networks under Rayleigh fading
IEEE Journal on Selected Areas in Communications
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Despite significant research effort, the performance of distributed medium access control methods has failed to meet theoretical expectations. Previously, we have proposed the concept for a fully-distributed, but non-optimum opportunistic medium access control called Channel MAC. In this paper, we present the Channel MAC protocol operations addressing the issues of information exchange between nodes, predicting transmission intervals and selecting transmission thresholds to achieve fairness. Although the proposed prediction scheme based on mean channel fading is simple to implement, it is imperfect leading to some performance losses. Event based simulation tool NS2 is used to analyse the performance of Channel MAC in a number of network scenarios. We analyse the performance of the proposed protocol using the performance metric; throughput, fairness and delay. The simulation results show throughput performance improvement of up to 30% with Channel MAC over IEEE 802.11 in certain multihop scenarios. Generally, the proposed protocol outperforms 802.11 in all analysed network scenarios. We also show that the severe resource starvation problem (unfairness) of IEEE 802.11 in some network scenarios is reduced by the Channel MAC mechanism.