Research Article
Cognitive Repeaters for Flexible Mobile Data Traffic Offloading
@INPROCEEDINGS{10.4108/icst.crowncom.2013.252075, author={Dennis Wieruch and Thomas Wirth and Oliver Braz and Alfons Du\`{a}mann and Markus Mederle and Marc M\'{y}ller}, title={Cognitive Repeaters for Flexible Mobile Data Traffic Offloading}, proceedings={8th International Conference on Cognitive Radio Oriented Wireless Networks}, publisher={ICST}, proceedings_a={CROWNCOM}, year={2013}, month={11}, keywords={amplify-and-forward (af) relaying lte-a field trials indoor coverage real-time implementation measurements cognitive repeaters}, doi={10.4108/icst.crowncom.2013.252075} }- Dennis Wieruch
Thomas Wirth
Oliver Braz
Alfons Dußmann
Markus Mederle
Marc Müller
Year: 2013
Cognitive Repeaters for Flexible Mobile Data Traffic Offloading
CROWNCOM
IEEE
DOI: 10.4108/icst.crowncom.2013.252075
Abstract
We investigate the performance of cognitive amplify-and-forward (AF) repeaters in a dense urban environment. The benefit of repeaters is twofold. First, repeaters can compensate penetration losses and serve as wireless backhauling technology to bring high data rates into shielded environments. Second, a cognitive repeater can utilize very flexible different frequency bands and adopt its wireless link to the current frequency re-use plan. In this paper, we propose a new cognitive repeater concept which utilizes multiband signal offloading. Therefore, a cognitive repeater is implemented as a real-time hardware prototype in an amplify-and-forward (AF) relay and deployed in a real LTE-A testbed. The system performance is evaluated by various measurement trials within shielded indoor hotspot environments. It is shown, that cognitive repeaters can take advantage of the signal shielding to the outside and beneficially improve system performance for indoor user hotspots.