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2008
IEEE

Perturbation-Based Distributed Beamforming for Wireless Relay Networks

8 years 4 months ago
Perturbation-Based Distributed Beamforming for Wireless Relay Networks
—This paper deals with distributed beamforming techniques for wireless networks with half-duplex amplify-andforward relays. Existing schemes optimize the beamforming weights based on the assumption that channel state information (CSI) is available at the relays. We propose to use adaptive beamforming based on deterministic perturbations and limited feedback (1-bit) from the destination to the relays in order to avoid CSI at the relays. Two scalable perturbation schemes are considered and practical implementation aspects are addressed. Simulation results confirm that the proposed techniques closely approach optimum performance and have satisfactory tracking properties in time-varying environments.
Peter Fertl, Ari Hottinen, Gerald Matz
Added 09 Nov 2010
Updated 09 Nov 2010
Type Conference
Year 2008
Where GLOBECOM
Authors Peter Fertl, Ari Hottinen, Gerald Matz
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