Feedback in LT Codes for Prioritized and Non-Prioritized Data

descriptionPublicationkeyboard_double_arrow_right Article , Conference object 01 Sep 2012 Denmark Publisher:IEEEJournal:2012 IEEE Vehicular Technology Conference (VTC Fall)

Authors: Jesper H. Sørensen; Petar Popovski; Jan Østergaard;

doi: 10.1109/vtcfall.2012.6399292

Feedback in LT Codes for Prioritized and Non-Prioritized Data

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Abstract

In this paper feedback in LT codes is investigated. The considered type of feedback is acknowledgments, where information on which symbols have been decoded is given to the transmitter. Our analysis reveals that acknowledgments has a very low potential in LT codes with standard degree distributions. Motivated by this, we analyze the impact of acknowledgments on multi-layer LT codes. In this case, feedback proves advantageous. By using only a single feedback message, it is possible to achieve a significant performance improvement compared to traditional LT codes.

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Denmark

Related Organizations

Aalborg University Library (AUB)
Denmark
Aalborg University
Denmark

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