Ultra-Sparse Binary LDPC Codes with CSK Signals for Increased Data Rates in Future GNSS

Chauvat, Remi; Pena, Axel Garcia; Anghileri, Marco; Floch, Jean-Jacques; Paonni, Matteo

doi:10.1109/navitec.2018.8642646

Cited by 9 publications

(7 citation statements)

References 17 publications

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“…The implemented LDPC codes are LDPC(1000, 500) and LDPC(500, 250) where the first value refers to the number of coded bits and the second value refers to the number of information bits. These LDPC channel codes have been specially designed for these sizes in a 3 step methodology described in [14]: first, the optimal variable node degreedistribution is derived; second, the LDPC matrix of the code is constructed by using the progressive edge growth (PEG) algorithm; third and last, a postprocessing is conducted to obtain a systematic code.…”

Section: Option 2: Bspk Candidates -E5b and L5/e5a-qmentioning

confidence: 99%

“…First, as well as for option 1, LDPC channel codes are considered with sizes LDPC(750, 375), LDPC(1500, 750) and LDPC(2000,1000). Both LDPC codes were specifically developed for these sizes and for an iterative decoding (BICM-ID, see section V.A) with the methodology proposed in [14]. Second, Reed-Solomon (RS) channel codes have been implemented in order to analyze similar signal structures to the only satellite navigation signal which implements a CSK modulation up to now: QZSS L6 signal for the Centimeter Level Augmentation Service (CLAS) [9].…”

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confidence: 99%

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Potential candidates for new SBAS signals

Garcia-Pena

Chauvat

Macabiau

et al. 2020

2020 IEEE/ION Position, Location and Navigation Symposium (PLANS)

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Satellite-Based Augmentation Systems (SBAS) provide single-frequency services for aeronautical users by broadcasting corrections and integrity information on L1 frequency. Future dual-frequency services for aeronautical users will be broadcast on L5-I/E5a-I frequency. New services that could be potentially provided by SBAS to non-aeronautical community are currently being investigated. These services may require higher data rates that challenge current SBAS signal definitions. Considering there is, at this time, no standardized SBAS signal neither on L5/E5a-Q component nor on E5b frequency band, an opportunity to evaluate new signal candidates is identified. In this paper, several candidates are proposed and compared with a baseline candidate. The baseline candidate is the current signal structure of SBAS signals, L1-I and L5-I/E5a-I. The comparison is made in terms of data rate, latency, data demodulation performance and receiver complexity as number of real additions and multiplications. It is observed that it is possible to increase the data rate and to reduce the latency without degrading the data demodulation threshold and with a reasonable complexity increase. Moreover, a compatibility analysis has been conducted which shows an impact smaller than 0.1dB of / degradation in any signal processing operation of any L5/E5a frequency band signal.

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Section: Option 2: Bspk Candidates -E5b and L5/e5a-qmentioning

confidence: 99%

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confidence: 99%

Potential candidates for new SBAS signals

Garcia-Pena

Chauvat

Macabiau

et al. 2020

2020 IEEE/ION Position, Location and Navigation Symposium (PLANS)

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“…The selected channel code depends on the information word size and on the data modulation. Therefore, in this article, a LDPC(1000, 500) ARB50 channel code has been implemented [27]. This channel code is specially designed to be implemented in a CSK modulation and presents a good compromise between users using iterative decoding (BICM-ID) and users using classic decoding (BICM) [27].…”

Section: Signal Structure Definition -Fast Ttffdmentioning

confidence: 99%

“…Therefore, in this article, a LDPC(1000, 500) ARB50 channel code has been implemented [27]. This channel code is specially designed to be implemented in a CSK modulation and presents a good compromise between users using iterative decoding (BICM-ID) and users using classic decoding (BICM) [27]. Note that LDPC channel codes presenting better results than the selected code for BICM-ID decoding have also been developed [27]; nevertheless, it is uncertain if all users will choose to implement a high-complexity iterative decoding instead of a less-complex classic decoding, such as mass-market or IoT devices.…”

Section: Signal Structure Definition -Fast Ttffdmentioning

confidence: 99%

“…The GNSS time is represent by 19 bits for a total information message size of 400 bits. The channel code selected to protect the codeword is the LDPC(800,400) ARB50 channel code [27] which is specially designed to be implemented in a CSK modulation and presents a good compromise between BICM-ID and BICM decoding algorithms. A summary of the signal structure characteristics is given in Table 4.…”

Section: Signal Structure Definition -Sca Cryptographic Key Delivery mentioning

confidence: 99%

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Multi-purpose TDM Component for GNSS

Garcia-Pena¹,

Julien²,

Anghileri³

et al. 2018

Proceedings of the 31st International Technical Meeting of the Satellite Division of the Institute of Navigation (ION GNSS+ 201

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His main research interests include navigation signal and message design and performance, receiver algorithms as well as navigation systems evolution and modernization. From 2009 to 2013 he supported the European Commission and the European GNSS Agency in different working groups, where he served as technical expert for Germany. He received his M.Sc. in Electrical Engineering from the Politecnico di Milano, Italy in 2006. Jean-Jacques Floch obtained his Engineering diploma in Electronics and telecommunication at the "Institut Supérieur Electronique Numérique", in France in 1998. He has been working in the area of mobile communications for several years. Since 2002 he has been working in the field of navigation satellite as system engineer at the Astrium GmbH. His work mainly focuses on Galileo signal design at system level and evaluation of performances and robustness of Galileo signals. Matteo Paonni is a Scientific Officer within the Directorate for Space, Security and Migration at the Joint Research Centre of the European Commission in Ispra, Italy. Under his position Matteo provides technical and policy support to the EU Satellite Navigation Programmes Directorate and to the European GNSS Agency. Matteo is involved since many years in the Galileo program and his main focus is on GNSS signal design and optimization, RF compatibility and signal processing.

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A novel integrated signal structure of satellite navigation and communication system with plug-and-play capability

Zou,

Gao,

et al. 2024

Digital Signal Processing

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Ultra-Sparse Binary LDPC Codes with CSK Signals for Increased Data Rates in Future GNSS

Cited by 9 publications

References 17 publications

Potential candidates for new SBAS signals

Potential candidates for new SBAS signals

Multi-purpose TDM Component for GNSS

A novel integrated signal structure of satellite navigation and communication system with plug-and-play capability

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