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We introduce a new multiuser diversity scheme for interference management in cellular networks. A base station with K antennas communicates with at most K out of M mobile stations. It is proven that, if K ?? M, then K independent data streams can be transmitted to K mobile stations with no need for cooperative joint decoding by such stations. This result is based on a new multiuser diversity concept...
In this paper we deduce the capacity of wireless adhoc networks under the assumptions of physical model for cooperative multiple input multiple output (MIMO) communication. We show that the capacity of a random wireless ad-hoc network can be improved significantly by adopting MIMO techniques. In particular, when the nodes are endowed with multi-packet transmission and reception capabilities, the per...
We propose ORCHESTRA, a channel access protocol that uses reservations and virtual MIMO to provide high throughput and bounded channel access delays. Channel access process is divided into a contention-based access period and a scheduled access period. To attain high throughput, nodes build the channel schedule using the contention-based access period, and utilize the spatial multiplexing gain of...
We propose the distributed channel access scheduling using virtual MIMO protocol (CHAMP). In CHAMP, nodes build a channel schedule in a distributed fashion to utilize the spatial multiplexing gain of virtual MIMO links. We also use a cooperative relay strategy to fully utilize the available degrees of freedom of virtual antenna arrays. We analyze the single-hop saturation throughput of CHAMP and evaluate...
We compute the capacity of mobile ad hoc networks(MANETs) when all the nodes in the network are endowed with M antennas. The derivation is based on a new communication scheme for wireless ad hoc networks utilizing the concept of cooperative many-to-many communication, called opportunistic cooperation, as opposed to the traditional approach that emphasizes on one-to-one communication. We demonstrate...
We compute an upper bound for the capacity of mobile wireless ad hoc networks (MANETs) when all the nodes in the network are endowed with multiple antennas. The derivation is based on a new communication scheme for wireless ad hoc networks utilizing the concept of cooperative many-to-many communication, which we show outperforms the conventional one-to-one communication approach. We assume that nodes...
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