Conference proceeding
Experimental demonstration of nullforming from a fully wireless distributed array
2017 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), pp.3694-3698
03/2017
DOI: 10.1109/ICASSP.2017.7952846
Abstract
We consider distributed nullforming using an array of wireless transmitters that coordinate their transmissions to achieve destructive interference at a designated receiver. We describe the first experimental demonstration of distributed nullforming to a target receiver from an array of three distributed transmitters using (mostly) off-the-shelf hardware and simple and standard signal processing techniques. We are motivated by the goal of using distributed arrays to achieve increased spectrum reuse through interference cancellation. Our results show interference suppression in excess of 25dB over uncoordinated transmission. We build on our recent experimental demonstration of beamforming from a distributed antenna array after estimating and compensate for the combined effects of unknown propagation channels, hardware mismatches and clock drifts between the array nodes. The transmitters do not share clocks or have any wired back channels. They coordinate achieve nullforming entirely using in-band wireless message exchanges. Thus these methods can be implemented on portable mobile devices rather than being limited to Base Stations.
Details
- Title: Subtitle
- Experimental demonstration of nullforming from a fully wireless distributed array
- Creators
- Ben Peiffer - University of IowaRaghu Mudumbai - University of IowaSairam Goguri - University of IowaSoura Dasgupta - University of IowaAnton Kruger - University of Iowa
- Resource Type
- Conference proceeding
- Publication Details
- 2017 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), pp.3694-3698
- Publisher
- IEEE
- DOI
- 10.1109/ICASSP.2017.7952846
- ISSN
- 1520-6149
- eISSN
- 2379-190X
- Language
- English
- Date published
- 03/2017
- Academic Unit
- Civil and Environmental Engineering; Electrical and Computer Engineering
- Record Identifier
- 9984197268802771
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