EURASIP Journal on Wireless Communications and Networking
Single and multiple relay selection schemes and their achievable diversity orders
IEEE Transactions on Wireless Communications
Amplify-and-forward relay networks under received power constraint
IEEE Transactions on Wireless Communications
IEEE Transactions on Signal Processing
Multi-source multi-destination relay network: An interference-free multi-beamforming protocol
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Distributed beamforming in multiuser multi-relay networks with guaranteed QoS
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Power allocation for beamforming relay networks under channel uncertainties
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Distributed beamforming in relay-assisted multiuser communications
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Optimal relay function in the low-power regime for distributed estimation over a MAC
IEEE Transactions on Signal Processing
Low-complexity algorithms for event detection in wireless sensor networks
IEEE Journal on Selected Areas in Communications - Special issue on simple wireless sensor networking solutions
Using agent-oriented simulation system AGNES for evaluation of sensor networks
MACOM'10 Proceedings of the Third international conference on Multiple access communications
Timing estimation and resynchronization for amplify-and- forward communication systems
IEEE Transactions on Signal Processing
Two-way MIMO relay precoder design with channel state information
IEEE Transactions on Communications
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A fundamental task in a wireless sensor network is to broadcast some measured data from an origin sensor to a destination sensor. Since the sensors are typically small, power limited, and low cost, they are only able to broadcast low-power signals. As a result, the propagation loss from the origin to the destination nodes can attenuate the signals beyond detection. One way to deal with this problem is to pass the transmitted signal through relay nodes. In this paper we propose and study two-hop multisensor relay strategies that achieve minimum mean-square-error (MSE) performance subject to either local or global power constraints. The capacity of the resulting relay link and its diversity order are studied. The effect of channel uncertainties on system performance is examined and a modified relay scheme is proposed.