Talks and Poster Presentations (with Proceedings-Entry):
P. Fertl, A. Hottinen, G. Matz:
"A Multiplicative Weight Perturbation Scheme For Distributed Beamforming In Wireless Relay Networks With 1-Bit Feedback";
Talk: IEEE Int. Conference on Acoustics, Speech, and Signal Processing (ICASSP),
- 04-24-2009; in: "Proc. of the IEEE Conference on Acoustics, Speech and Signal Processing (ICASSP 2009)",
This paper focuses on perturbation-based distributed beamforming with 1-bit feedback for wireless amplify-and-forward relay networks. We propose to use multiplicative perturbations based on Givens rotations to adapt the beamforming weights while guaranteeing a sum power constraint for the relays. This perturbation scheme is shown to be computationally efficient and easy to design, thus allowing for low-complexity relay nodes. An adaptation of the Givens rotation angle allows to approach optimum performance arbitrarily close. Numerical simulations demonstrate noticeable performance
gains over additive perturbation schemes that have been exclusively considered up to now.
relay network, amplify-and-forward, distributed beamforming, Givens rotation, feedback
Electronic version of the publication:
Created from the Publication Database of the Vienna University of Technology.