Cooperative Wireless Networking Beyond Store-and-Forward
Wireless Personal Communications: An International Journal
Energy efficient cooperative MIMO with idle nodes in cluster based wireless sensor networks
ISWCS'09 Proceedings of the 6th international conference on Symposium on Wireless Communication Systems
A resource allocation algorithm for cluster-based cooperative MIMO in wireless sensor networks
SoftCOM'09 Proceedings of the 17th international conference on Software, Telecommunications and Computer Networks
EWSN'08 Proceedings of the 5th European conference on Wireless sensor networks
A cooperative transmission scheme for cluster based wireless sensor networks
ICIC'09 Proceedings of the Intelligent computing 5th international conference on Emerging intelligent computing technology and applications
Grouping Algorithm for Partner Selection in Cooperative Transmission
Wireless Personal Communications: An International Journal
Wireless MIMO Sensor Network with Power Constraint WLS/BLUE Estimators
Wireless Personal Communications: An International Journal
Time Synchronization for Cooperative Communication in Wireless Sensor Networks
Wireless Personal Communications: An International Journal
Energy-aware adaptive cooperative FEC protocol in MIMO channel for wireless sensor networks
Journal of Electrical and Computer Engineering
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The large number of network nodes and the energy constraints make Wireless Sensor Networks (WSN) one of the most important application fields for Cooperative Diversity. Node cooperation increases the spatial diversity of wireless channels and, thus, reduces the transmitted power. In this paper, we propose a multi-hop WSN with nodes grouped in cooperative clusters that exploits transmit and receive cooperation among cluster nodes. Multi-hop transmission is carried out by concatenating single cluster-to-cluster hops, where every cluster-to-cluster link is defined as a cooperative distributed multiple-input-multiple-output (MIMO) channel. Transmit diversity is exploited through a time-division, decoder-and-forward, relaying scheme based upon two time slots: the Intracluster Slot, used for data sharing within the cluster, and the Intercluster Slot, used for transmission between clusters. At the receiver side, a distributed reception protocol is devised based upon a Selection Diversity algorithm. The proposed multi-hop cooperative WSN is optimally designed for minimum end-to-end outage probability by deriving the optimum time and power allocated on the intracluster and intercluster slots of every single hop, given a per-link energy constraint. A simplified suboptimum resource allocation is also proposed, which performs close to the optimal policy. Results show that the proposed scheme achieves diversity equal to the equivalent MIMO system and significantly reduces energy consumption with respect to. the non-cooperative channel