Distributed Transmit Beamforming: Design and Demonstration from the Lab to UAVs

@article{Hanna2021DistributedTB,
  title={Distributed Transmit Beamforming: Design and Demonstration from the Lab to UAVs},
  author={Samer S. Hanna and Danijela Cabric},
  journal={IEEE Transactions on Wireless Communications},
  year={2021}
}
Cooperating radios can extend their communication range by adjusting their signals to ensure coherent combining at a destination radio. This technique is called distributed transmit beamforming. Beamforming (BF) relies on the BF radios having frequency synchronized carriers and phases adjusted for coherent combining. Both requirements are typically met by exchanging preambles with the destination. However, since BF aims to increase the communication range, the individually transmitted preamblesโ€ฆย 

Distributed Transmit Beamforming: Analyzing the Maximum Communication Range

  • Samer S. HannaD. Cabric
  • Computer Science
    2022 IEEE 12th Sensor Array and Multichannel Signal Processing Workshop (SAM)
  • 2022
It is shown that increasing the preamble lengths or increasing the destination power can significantly increase the maximum range while just increasing the number of radios gives diminishing range extension, and the maximum communication range to realize a desired post- BF SNR is calculated.

Destination-Feedback Free Distributed Transmit Beamforming using Guided Directionality

This work proposes and demonstrates a destination-feedback-free distributed beamforming approach that leverages the radioโ€™s mobility and coarse location information in a dominant lineof-sight channel and specifies the radiosโ€™ position requirements and verify their relation to the combined signal at the destination using simulations.

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