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gawlowicz2019ofdmfi
Piotr Gawłowicz, Anatolij Zubow, Suzan Bayhan and Adam Wolisz, "OfdmFi: Enabling Cross-Technology Communication Between LTE-U/LAA and WiFi," Telecommunication Networks Group (TKN), TU Berlin (TUB), cs.NI, 1912.04093, December 2019.
Abstract
Despite exhibiting very high theoretical data rates, in practice, the performance of LTE-U/LAA and WiFi networks is severely limited under cross-technology coexistence scenarios in the unlicensed 5GHz band. As a remedy, recent research shows the need for collaboration and coordination among co-located networks. However, enabling such collaboration requires an information exchange that is hard to realize due to completely incompatible network protocol stacks. We propose OfdmFi, the first cross-technology communication scheme that enables direct bidirectional over-the-air communication between LTE-U/LAA and WiFi with minimal overhead to their legacy transmissions. Requiring neither hardware nor firmware changes in commodity technologies, OfdmFi leverages the standard-compliant possibility of generating message-bearing power patterns, similar to punched cards from the early days of computers, in the time-frequency resource grid of an OFDM transmitter which can be cross-observed and decoded by a heterogeneous OFDM receiver. As a proof-of-concept, we have designed and implemented a prototype using commodity devices and SDR platforms. Our comprehensive evaluation reveals that OfdmFi achieves robust bidirectional CTC between both systems with a data rate of up to 84kbps, which is more than 125x faster than state-of-the-art.
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Piotr Gawłowicz
Anatolij Zubow
Suzan Bayhan
Adam Wolisz
BibTeX reference
@techreport{gawlowicz2019ofdmfi,
author = {Gawłowicz, Piotr and Zubow, Anatolij and Bayhan, Suzan and Wolisz, Adam},
title = {{OfdmFi: Enabling Cross-Technology Communication Between LTE-U/LAA and WiFi}},
institution = {Telecommunication Networks Group (TKN), TU Berlin (TUB)},
location = {Berlin, Germany},
month = {12},
number = {1912.04093},
type = {cs.NI},
year = {2019},
}
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