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Algorithms for closed-loop feedback based distributed adaptive beamforming in wireless sensor networks

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2 Author(s)
Stephan Sigg ; Institute of operating systems and computer networks, TU Braunschweig Mühlenpfordtstrasse 23, 38106 Braunschweig, Germany ; Michael Beigl

We study a closed-loop feedback based approach to distributed adaptive transmit beamforming in wireless sensor networks. Three algorithms to achieve sufficient phase synchronisation of carrier signals are considered. In particular, we study the impact of normal and uniform distributions for the phase alteration probability on the performance of the synchronisation process. Both distributions are studied for various probability distributions and variances. Furthermore, a local random search heuristic is studied for various sizes of the search neighbourhood.

Published in:

Intelligent Sensors, Sensor Networks and Information Processing (ISSNIP), 2009 5th International Conference on

Date of Conference:

7-10 Dec. 2009