Implementation of Code Shift Keying signalling technique in GALILEO E1 signal
| Autor: | Marie-Laure Boucheret, Axel Javier Garcia Peña, Stéphane Corazza, Lionel Ries, Anne-Christine Escher, Christophe Macabiau, Jean-Louis Damidaux |
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| Přispěvatelé: | Ecole Nationale de l'Aviation Civile (ENAC), Ecole Nationale Supérieure d'Electrotechnique, d'Electronique, d'Informatique, d'Hydraulique et de Télécommunications (ENSEEIHT), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées, Thales Alenia Space (TAS), THALES, Centre National d'Études Spatiales [Toulouse] (CNES) |
| Rok vydání: | 2010 |
| Předmět: |
likelihood ratio
Computer science 050801 communication & media studies 02 engineering and technology Signal 0508 media and communications [INFO.INFO-TS]Computer Science [cs]/Signal and Image Processing 0203 mechanical engineering CSK Electronic engineering Demodulation Detection theory CSK mapping BER 05 social sciences CSK tracking 020302 automobile design & engineering CSK acquisition demodulation performance Transmission (telecommunications) GNSS applications Bit error rate Satellite navigation [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing Word (computer architecture) WER |
| Zdroj: | Satellite Navigation Technologies and European Workshop on GNSS Signals and Signal Processing (NAVITEC), 2010 5th ESA Workshop on NAVITEC 2010, 5th ESA Workshop on Satellite Navigation Technologies and European Workshop on GNSS Signals NAVITEC 2010, 5th ESA Workshop on Satellite Navigation Technologies and European Workshop on GNSS Signals, Dec 2010, Noordwijk, Netherlands. pp 1-8, ⟨10.1109/NAVITEC.2010.5708056⟩ |
| Popis: | International audience; One of limitations of the current GNSS signals is their low data information rate. This low data information rate does not allow, for example, the transmission of additional commercial services or the transmission of redundant ephemeris data. The Code Shift Keying (CSK) is a signaling technique specifically designed to increase the transmission bit rate of a spreading spectrum signal. Therefore, one solution to increase the data information rate of the GNSS signals is to introduce the CSK technique in them. In this paper, the implementation of the CSK technique into GNSS signals is inspected through the development and analysis of the likelihood ratio expression of the bits transmitted inside a CSK symbol, and through the identification of the best mapping between bits belonging to a word and bits transmitted inside a CSK symbol. Finally, the impact of the CSK technique on the GALILEO E1 signal is analyzed by calculating the CSK demodulation performance for a given scenario and the drawbacks of the technique on the signal acquisition and tracking processes. |
| Databáze: | OpenAIRE |
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