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On the Feasibility of Distributed Beamforming in Wireless Networks
IEEE Transactions on Wireless Communications, 2007Energy efficient communication is a fundamental problem in wireless ad-hoc and sensor networks. In this paper, we explore the feasibility of a distributed beamforming approach to this problem, with a cluster of distributed transmitters emulating a centralized antenna array so as to transmit a common message signal coherently to a distant base station ...
Upamanyu Madhow
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Performance Comparison between Distributed Beamforming and Clustered Beamforming
2014 11th International Conference on Information Technology: New Generations, 2014The performance of transmit beamforming (BF) systems in terms of the spatial correlation coefficient and channel gain variance (CGV) are analyzed over Rayleigh fading channels. We derive bit error rate (BER) of distributed BF (DBF) systems as a function of CGV of distributed channel links.
Sahar Amini, Dong-jun Na, Kwonhue Choi
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A distributed algorithm for cooperative relay beamforming
2013 American Control Conference, 2013We consider the problem of cooperative beamforming in relay networks. Assuming knowledge of the second-order statistics of channel state information (CSI), the optimal beamforming weights are determined so that the total transmitted power at the relays is minimized, while meeting signal-to-interference-plus-noise-ratio (SINR) requirements at the ...
Nikolaos Chatzipanagiotis +2 more
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Pairwise Algorithm for Distributed Transmit Beamforming
2008 IEEE International Conference on Communications, 2008In this paper, we present a novel algorithm for distributed transmit beamforming enabling multiple single-antenna nodes to simultaneously transmit a common message such that they constructively interfere at the receiver. In order to constructively interfere, the nodes iteratively estimate and adjust their carrier phases with the help of receiver ...
Prasanth Jeevan +3 more
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Modeling distributed beamforming in wireless networks
2008 46th Annual Allerton Conference on Communication, Control, and Computing, 2008Distributed beamforming in wireless ad hoc networks has the promise of greatly improving network throughput. However, unlike traditional beamforming from a fixed array, the random locations of the nodes collaborating to form the array lead to a random beam pattern.
Kery Hardwick +2 more
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Diffusion-based distributed MVDR beamformer
2014 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2014Advances in hardware and communication technology make distributed sound acquisition increasingly attractive. We describe a distributed beamforming method based on the diffusion adaptation paradigm. In contrast to existing distributed beamforming methods, the method does not impose conditions on the topology or the structure of the network nor does it ...
Matthew O'Connor, W. Bastiaan Kleijn
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Distributed Beamforming for Underwater Sensor Networks
Proceedings of the International Conference on Underwater Networks %Systems - WUWNET '14, 2014We propose a binary-feedback-based distributed beamforming for underwater sensor networks (UWSNs). Distributed beamforming is a technique that enables distributed sensor nodes to cooperatively transmit signals in order to improve the signal-to-noise ratio (SNR).
Yonggang Kim, Hyuk Lim
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Capacity maximization for distributed broadband beamforming
2016 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2016Most prior research in distributed beamforming involves narrowband, frequency nonselective, channels, with the goal of sending a common message from cooperating nodes so that phases of the signals transmitted from the different nodes align at the receiver.
Sairam Goguri +4 more
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Distributed beamforming using mobile robots
2016 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2016We consider the case where a team of unmanned vehicles are tasked with distributed beamforming in order to cooperatively transmit a message to a remote station. We propose a joint motion and communication optimization framework where the robots move in order to find locations that satisfy the given reception quality requirement while minimizing the ...
Arjun Muralidharan, Yasamin Mostofi
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Robust Distributed Cognitive Relay Beamforming
2012 IEEE 75th Vehicular Technology Conference (VTC Spring), 2012In this paper, we present a distributed relay beamformer design for a cognitive radio network in which a cognitive (or secondary) transmit node communicates with a secondary receive node assisted by a set of cognitive non-regenerative relays. The secondary nodes share the spectrum with a licensed primary user (PU) node, and each node is assumed to be ...
P. Ubaidulla, Sonia Aïssa
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