Cooperative Communications in Mobile Ad-Hoc Networks: Rethinking the Link abstraction. Scaglione, A., Goeckel, D. L., & Laneman, J. N. IEEE Signal Processing Magazine, Special Issue on Signal Processing for Wireless Ad hoc Communication Networks, June, 2006.
abstract   bibtex   
The motivation of this paper is to clarify and help resolve the gap between the link abstraction used in traditional wireless networking and its much broader definition used in the context of cooperative communications, which has recently received significant Internet interest as an untapped means for improving performance of relay transmission systems operating over the ever-challenging wireless medium. The common theme of most research in this area is to optimize physical layer performance measures without considering in much detail how cooperation interacts with higher layers and improves network performance measures. Because these issues are important for enabling cooperative communications to practice in real-world networks, especially for the increasingly important class of mobile ad hoc networks (MANETs), the goals of this paper are to survey basic cooperative communications and outline two potential architectures for cooperative MANETs. The first architecture relies on an existing clustered infrastructure: cooperative relays are centrally controlled by cluster heads. In another architecture without explicit clustering, cooperative links are formed by request of a source node in an ad hoc, decentralized fashion. In either case, cooperative communication considerably improves the network connectivity. Although far from a complete study, these architectures provide modified wireless link abstractions and suggest tradeoffs in complexity at the physical and higher layers. Many opportunities and challenges remain, including: distributed synchronization, coding, and signal processing among multiple radios; modeling of new link abstractions at higher layers; and multi-access and routing protocols for networks of cooperative links.
@Article{ 5890,
	title = "Cooperative Communications in Mobile Ad-Hoc Networks: Rethinking the Link abstraction",
	author = "Anna Scaglione and Dennis L. Goeckel and J. Nicholas Laneman",
	journal = "IEEE Signal Processing Magazine, Special Issue on Signal Processing for Wireless Ad hoc Communication Networks",
	month = "June",
	year = "2006",
	abstract = "The motivation of this paper is to clarify and help resolve the gap between the link abstraction used in traditional wireless networking and its much broader definition used in the context of cooperative communications, which has recently received significant Internet interest as an untapped means for improving performance of relay transmission systems operating over the ever-challenging wireless medium. The common theme of most research in this area is to optimize physical layer performance measures without considering in much detail how cooperation interacts with higher layers and improves network performance measures. Because these issues are important for enabling cooperative communications to practice in real-world networks, especially for the increasingly important class of mobile ad hoc networks (MANETs), the goals of this paper are to survey basic cooperative communications and outline two potential architectures for cooperative MANETs. The first architecture relies on an existing clustered infrastructure: cooperative relays are centrally controlled by cluster heads. In another architecture without explicit clustering, cooperative links are formed by request of a source node in an ad hoc, decentralized fashion. In either case, cooperative communication considerably improves the network connectivity. Although far from a complete study, these architectures provide modified wireless link abstractions and suggest tradeoffs in complexity at the physical and higher layers. Many opportunities and challenges remain, including: distributed synchronization, coding, and signal processing among multiple radios; modeling of new link abstractions at higher layers; and multi-access and routing protocols for networks of cooperative links. ",
	localfile = "/home/stephan/Daten/Arbeit/Paper\_Tutorials/Paper/060101\_5890\_cooperativeCommunicationsInMobileAdHocNetworksRethinkingTheLinkAbstraction.pdf",
	Bemerkung: = "Fokus: Two potential architectures for cooperative MANETS"
}

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