Binary Root Protograph LDPC Codes for CSK Modulation to Increase the Data Rate and Reduce the TTD

Lorenzo Ortega Espluga, Charly Poulliat, Marie-Laure Boucheret, Marion Aubault-Roudier, Hanaa Al-Bitar

Abstract: New generation of GNSS systems seeks to provide new features in order to create or to improve their currents services. Between those possible features; the increase of the data rate is necessary in order to to provide services such as authentication, precise positioning or reduce the Time-To-First-Fix (TTFF). On the other hand, the data availability in harsh environment suggest the need of error correcting technologies. Then, based on previous works over the Code-Shift Keying (CSK) modulation and in Root Protograph LDPC code to reduce the TTFF, in this paper, it is presented the optimization of Root Protograph LDPC codes for the CSK modulation in a Bit-Interleaved Coded Modulation context and the optimization of Root Protograph LDPC codes for the CSK modulation in BitInterleaved Coded Modulation Iterative Decoding context. Both optimization where base on the Protograph EXIT chat algorithm, providing promising results.
Published in: Proceedings of the 32nd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2019)
September 16 - 20, 2019
Hyatt Regency Miami
Miami, Florida
Pages: 1020 - 1038
Cite this article: Espluga, Lorenzo Ortega, Poulliat, Charly, Boucheret, Marie-Laure, Aubault-Roudier, Marion, Al-Bitar, Hanaa, "Binary Root Protograph LDPC Codes for CSK Modulation to Increase the Data Rate and Reduce the TTD," Proceedings of the 32nd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2019), Miami, Florida, September 2019, pp. 1020-1038. https://doi.org/10.33012/2019.17040
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