Diversity and Degrees of Freedom of Cooperative Wireless Networks

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dc.creatorSreeram, K.
dc.creatorBirenjith, S.
dc.creatorKumar, P. Vijay
dc.date2008-02-13
dc.date.accessioned2026-07-07T09:20:33Z
dc.date.available2026-07-07T09:20:33Z
dc.descriptionWireless fading networks with multiple antennas are typically studied information-theoretically from two different perspectives - the outage characterization and the ergodic capacity characterization. A key parameter in the outage characterization of a network is the diversity, whereas a first-order indicator for the ergodic capacity is the degrees of freedom (DOF), which is the pre-log coefficient in the capacity expression. In this paper, we present max-flow min-cut type theorems for computing both the diversity and the degrees of freedom of arbitrary single-source single-sink multi-antenna networks. We also show that an amplify-and-forward protocol is sufficient to achieve this. The degrees of freedom characterization is obtained using a conversion to a deterministic wireless network for which the capacity was recently found. We show that the diversity result easily extends to multi-source multi-sink networks and evaluate the DOF for multi-casting in single-source multi-sink networks.
dc.descriptionSubmitted to International Symposium on Information Theory (ISIT), 2008
dc.identifierhttps://arxiv.org/abs/0802.1893
dc.identifierhttp://arxiv.org/abs/0802.1893
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/154755
dc.subjectInformation Theory
dc.titleDiversity and Degrees of Freedom of Cooperative Wireless Networks
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