Computer Networks: The International Journal of Computer and Telecommunications Networking
Medium Access Control in Ad Hoc Networks with MIMO Links: Optimization Considerations and Algorithms
IEEE Transactions on Mobile Computing
IEEE 802.11n: enhancements for higher throughput in wireless LANs
IEEE Wireless Communications
From theory to practice: an overview of MIMO space-time coded wireless systems
IEEE Journal on Selected Areas in Communications
Error-Sensitive adaptive frame aggregation in 802.11n WLAN
WWIC'10 Proceedings of the 8th international conference on Wired/Wireless Internet Communications
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Nowadays, the prevalence of multimedia applications mandates that wireless networks provide higher throughput and increased spatial efficiency. Aimed primarily at achieving this goal, the first IEEE 802.11n draft was recently approved. In the draft, MIMO and frame aggregation are utilized to improve the PHY and MAC layers in single-hop WLANs by achieving high raw rates and goodput. However, in the context of multi-hop wireless ad hoc networks, the hidden terminal, exposed terminal, and deafness problems remain unsolved by IEEE 802.11n. Consequently, this greatly degrades the MAC efficiency in multi-hop wireless ad hoc networks, even in the presence of frame aggregation. In this paper, we propose a novel MAC scheme that utilizes MIMO distributed spatial multiplexing to solve all the aforementioned problems, resulting in high throughput and fairness in multi-hop wireless ad hoc networks. Moreover, our scheme can be integrated with frame aggregation to further enhance the network performance.