Experimental demonstration of a distributed antenna array pre-synchronized for retrodirective transmission

Ben Peiffer; Raghu Mudumbai; Anton Kruger; Amy Kumar; Soura Dasgupta

doi:10.1109/CISS.2016.7460546

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Conference proceeding

Experimental demonstration of a distributed antenna array pre-synchronized for retrodirective transmission

Ben Peiffer, Raghu Mudumbai, Anton Kruger, Amy Kumar and Soura Dasgupta

2016 Annual Conference on Information Science and Systems (CISS), pp.460-465

03/2016

DOI: 10.1109/CISS.2016.7460546

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Abstract

We describe the key ideas behind our implementation of a distributed antenna array fully pre-synchronized for retrodirective transmission to an external receiver. In our implementation, a number of wireless transceivers in a network use a sequence of simple in-band wireless message exchanges to calibrate themselves so that these transceivers can obtain their channel gains to an external receiver using reciprocity simply by observing a single incoming transmission from that receiver without any channel feedback or other cooperation from the receiver. Some notable features of our implementation are as follows: (a) it automatically calibrates and corrects for unknown channel gains, oscillator offsets and drifts between the array nodes as well as the effect of non-reciprocal RF hardware; (b) it is fully wireless and endogenous i.e., does not use any wired backhaul connections or side channels including GPS; and (c) it uses simple signal processing on a standard and widely available software-defined radio platform based on off-the-shelf hardware and open-source software. Also, to the best of our knowledge, this is the first ever demonstration of a pre-synchronized distributed array, and thus our implementation serves as a proof-of-concept and allows for the development of more advanced distributed array techniques building on this capability.

Antenna arrays

Array signal processing

Channel estimation

Clocks

Hardware

Receivers

Wireless communication

Details

Title: Subtitle: Experimental demonstration of a distributed antenna array pre-synchronized for retrodirective transmission
Creators: Ben Peiffer - University of Iowa
Raghu Mudumbai - University of Iowa
Anton Kruger - University of Iowa
Amy Kumar - University of Iowa
Soura Dasgupta - University of Iowa
Resource Type: Conference proceeding
Publication Details: 2016 Annual Conference on Information Science and Systems (CISS), pp.460-465
DOI: 10.1109/CISS.2016.7460546
Publisher: IEEE
Language: English
Date published: 03/2016
Academic Unit: Electrical and Computer Engineering; Civil and Environmental Engineering
Record Identifier: 9984197348202771

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