Concatenated Coding for GNSS Signals in Urban Environments
Source abstract
Abstract
This work investigated concatenated coding schemes for Global Navigation Satellite System (GNSS) signals in order to increase their error correction capability in urban environments. In particular, a serial concatenated code that combines an outer Reed–Solomon (RS) code with an inner low-density parity-check (LDPC) code was designed, and the performance was investigated over the land mobile satellite (LMS) channel for characterizing multipath and shadow fading in urban environments. The performance of the proposed concatenated coding scheme was compared to that of a B-CNAV1 message, in which two interleaved 64-ary LDPC codes were employed. The simulation results demonstrate that the proposed concatenated code can obtain a similar error correction performance to the two interleaved 64-ary LDPC codes in both the additive white Gaussian noise (AWGN) and LMS channels at a lower complexity level.
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Research context
OpenAlex topics: Error Correcting Code Techniques · Advanced Wireless Communication Techniques · Satellite Communication Systems
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Affiliations
National Time Service Center, Chinese Academy of Sciences, Xi′an 710600, China
Key Laboratory of Precision Navigation and Timing Technology, National Time Service Center, Chinese Academy of Sciences, Xi′an 710600, China
University of Chinese Academy of Sciences, Beijing 100049, China
School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, China
School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
School of Information Science and Technology, Northwest University, Xi′an 710127, China
Funding
National Natural Science Foundation of China
References (29)
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