A new wireless network medium access protocol based on cooperation
IEEE Transactions on Signal Processing
Cooperative diversity in wireless networks: Efficient protocols and outage behavior
IEEE Transactions on Information Theory
The golden code: a 2×2 full-rate space-time code with nonvanishing determinants
IEEE Transactions on Information Theory
Cooperative communication in wireless networks
IEEE Communications Magazine
CoopMAC: A Cooperative MAC for Wireless LANs
IEEE Journal on Selected Areas in Communications
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MIMO wireless networks, with multiple antennas at the source and the destination, introduce a transmission diversity to improve robustness to fading and interferences, and ensure data reliability. Such technique has been generalized to simple nodes, with only one antenna, that cooperate in a virtual MIMO manner. This is mainly due to Space-Time Block Coding (STBC) techniques used at the physical layer. Cooperation is realized by using a relay node that helps the source-destination transmission. Elsewhere, MAC protocols proposed for wireless nodes cooperation are mainly based on forwarding the received frames from a source node to a destination node. In this paper, we introduce a novel cross-layer MAC protocol for wireless cooperative ad hoc networks. This MAC protocol, named Diversity Driven MAC protocol, is based on STBC techniques at the source node, and an amplify and forward technique at the relay. Simulations results are given to show the effectiveness of the proposed protocol regarding the 802.11a legacy MAC protocol.