Title :
Multi-service data dissemination for space-based augmentation systems
Author :
Vergara, M. ; Antreich, Felix ; Liva, Gianluigi ; Matuz, Balazs
Author_Institution :
Inst. of Commun. & Navig., German Aerosp. Center (DLR), Wessling, Germany
Abstract :
New SBAS (Satellite Based Augmentation System) signals could include the provision of new additional services alongside the defined SBAS L1/L5 aeronautical service [1], if additional power becomes available. In this paper we present a solution that efficiently makes use of the additional available power in order to increase the overall data rate of a new multi-service SBAS signal. These new SBAS signals will be backward compatible. The high power efficiency of the proposed scheme is guaranteed by a variation of the interplex scheme that is characterized by a variable envelope signal constellation. A coding scheme based on generalized low density parity check (LDPC) codes ensures that service requirements can be met with a lower SNR (Signal-to-Noise Ratio).
Keywords :
artificial satellites; parity check codes; LDPC; SBAS L1-L5 aeronautical service; SNR; interplex scheme; low density parity check coding scheme; multiservice SBAS signal; multiservice data dissemination; satellite based augmentation system; signal-to-noise ratio; space-based augmentation systems; variable envelope signal constellation; Constellation diagram; Nonlinear distortion; Parity check codes; Quadrature amplitude modulation; Receivers; Signal to noise ratio; Vectors;
Conference_Titel :
Aerospace Conference, 2013 IEEE
Conference_Location :
Big Sky, MT
Print_ISBN :
978-1-4673-1812-9
DOI :
10.1109/AERO.2013.6496948
