Distributed Beamforming Based on Dual-Frequency PDoA for Wireless Sensor Network

In Wireless Sensor Networks cooperation between network elements can be used to improve the signal-to-noise ratio for a given node. In this work we propose an open loop distributed beamforming system for Wireless Sensor Networks. Our approach is inspired in Retrodirective Antenna Array and is based...

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Bibliographic Details
Main Authors: Sobrinho, Angilberto M. F., da R. Neto, Jose S., Gurjao, Edmar C.
Format: Conference Proceeding
Language:English
Subjects:
Array signal processing
Distributed Beamforming
Phase Synchronization
Phased arrays
Retrodirective Antenna Array
Sensor systems
Synchronization
Wireless Sensor Network
Wireless sensor networks
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Summary:In Wireless Sensor Networks cooperation between network elements can be used to improve the signal-to-noise ratio for a given node. In this work we propose an open loop distributed beamforming system for Wireless Sensor Networks. Our approach is inspired in Retrodirective Antenna Array and is based on the phase-inversion of a dual frequency pilot (beacon) signal sent from the Master Base Station to the remote sensors nodes. The phase to be inverted is estimated based on a Multi-Carrier Phase Difference of Arrival (MC-PDoA) technique. The obtained results show an improvement in the signal-to-noise ratio as well a 3dB gain in the performance of a QPSK modulation embedded in the proposed system.
ISSN:2158-1525
DOI:10.1109/ISCAS.2019.8702707