Conference proceeding
A class of scalable feedback algorithms for beam and null-forming from distributed arrays
2016 50th Asilomar Conference on Signals, Systems and Computers, pp.1447-1451
11/2016
DOI: 10.1109/ACSSC.2016.7869616
Abstract
We describe a class of scalable algorithms for shaping the transmission pattern of a distributed antenna array to steer beams and nulls to cooperating receivers. The key distinguishing feature of these algorithms is that no explicit channel state feedback from the receiver to individual transmitters, no channel reciprocity and minimal coordination between the transmitters is required. Instead, these algorithms are iterative, whereby the transmitters periodically make small adjustments to their transmit array weights, and the intended beam or null target responds by sending a common feedback message every period to all the transmitters. This message consists of a single complex number that represents the aggregate signal amplitude and phase of the array nodes combined transmission at the receiver. By repeatedly probing the receiver in this way and using the resulting feedback messages, we show that the transmitters can converge to the correct array weights necessary to steer beams and nulls at the receiver in a completely decentralized fashion. We describe the intuition behind this technique as well as numerical comparisons with previous work.
Details
- Title: Subtitle
- A class of scalable feedback algorithms for beam and null-forming from distributed arrays
- Creators
- Sairam Goguri - University of IowaBen Peiffer - University of IowaRaghu Mudumbai - University of IowaSoura Dasgupta - University of Iowa
- Resource Type
- Conference proceeding
- Publication Details
- 2016 50th Asilomar Conference on Signals, Systems and Computers, pp.1447-1451
- Publisher
- IEEE
- DOI
- 10.1109/ACSSC.2016.7869616
- ISSN
- 1058-6393
- eISSN
- 2576-2303
- Language
- English
- Date published
- 11/2016
- Academic Unit
- Electrical and Computer Engineering
- Record Identifier
- 9984197285302771
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