On the interdependence of routing and data compression in multi-hop sensor networks
Proceedings of the 8th annual international conference on Mobile computing and networking
Directed diffusion for wireless sensor networking
IEEE/ACM Transactions on Networking (TON)
On the scalability of cooperative time synchronization in pulse-connected networks
IEEE/ACM Transactions on Networking (TON) - Special issue on networking and information theory
A Cross-Layer Framework for Exploiting Virtual MISO Links in Mobile Ad Hoc Networks
IEEE Transactions on Mobile Computing
Cooperative multibeamforming in ad hoc networks
EURASIP Journal on Advances in Signal Processing
Performance of Cooperative Time-Reversal Communication in a Mobile Wireless Environment
International Journal of Distributed Sensor Networks - Heterogenous Wireless Ad Hoc and Sensor Networks
Proceedings of the 2009 International Conference on Wireless Communications and Mobile Computing: Connecting the World Wirelessly
Distributed transmit beamforming: challenges and recent progress
IEEE Communications Magazine
Diversity routing for multi-hop wireless networks with cooperative transmissions
SECON'09 Proceedings of the 6th Annual IEEE communications society conference on Sensor, Mesh and Ad Hoc Communications and Networks
A study on collaborative beamforming with protocol defects in wireless ad hoc networks
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Distributed transmit beamforming using feedback control
IEEE Transactions on Information Theory
Target localization accuracy gain in MIMO radar-based systems
IEEE Transactions on Information Theory
Throughput analysis of multiple access relay channel under collision model
INFOCOM'10 Proceedings of the 29th conference on Information communications
AST/UCMA/ISA/ACN'10 Proceedings of the 2010 international conference on Advances in computer science and information technology
Order-optimal data aggregation in regular wireless sensor networks
IEEE Transactions on Information Theory
EURASIP Journal on Wireless Communications and Networking
Distributed transmit beamforming without phase feedback
EURASIP Journal on Wireless Communications and Networking - Special issue on theoretical and algorithmic foundations of wireless ad hoc and sensor networks
CIT'11 Proceedings of the 5th WSEAS international conference on Communications and information technology
Wireless Communications & Mobile Computing
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Energy efficient transfer of data from sensors is a fundamental problem in sensor networks. In this paper, we propose a distributed beamforming approach to this problem, with a cluster of sensors emulating a centralized antenna array. While it is well-known that beamforming can provide large performance gains, such gains presuppose not only accurate knowledge of the channel, but also time and phase synchronization at the transmitter. We propose explicit methods for achieving such synchronization in a distributed fashion, and analyze the effects of various sources of coordination error on the attained performance. We find that, as long as the error in range measurements or placement of the sensor nodes is within a fraction of a carrier wavelength, the proposed distributed beamforming strategies achieve most of the gains available from a centralized beamformer.