Low Complexity Iterative Channel Estimation for the L-band Digital Aeronautical Communication System 1 based on OFDM

Konferenz: OFDM 2014 - 18th International OFDM Workshop 2014 (InOWo'14)
27.08. - 28.08.2014 in Essen, Deutschland

Tagungsband: OFDM 2014

Seiten: 8Sprache: EnglischTyp: PDF

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Hirschbeck, Martin; Huber, Johannes B. (Institute for Information Transmission, University Erlangen-Nuremberg, Germany)
Berold, Ulrich (iAd GmbH, Unterschlauersbacher Hauptstr. 10, 90613 Grosshabersdorf, Germany)

L-band Digital Aeronautical Communication System 1 (L-DACS 1) is one proposal for the upcoming digital communication system between air control and airplane pilots. This paper analyzes techniques to perform a pilot- and data-aided channel estimation for aeronautical channel scenarios. Due to complexity and processing delay constraints, an iterative channel estimation approach which feedbacks the soft output information from a channel decoder cannot be applied. Instead, we propose a low complexity iterative estimation scheme without incorporating the channel decoding. It turns out that the proposed approach is a promising trade off between accuracy and complexity. It shows that channel estimation for the L-DACS 1 system is feasible even for pessimistic scenarios.