RT Journal Article
SR Electronic
T1 High-parity vertical Reed-Solomon codes for long GNSS high-accuracy messages
JF NAVIGATION: Journal of the Institute of Navigation
JO NAVIGATION
FD Institute of Navigation
SP 365
OP 378
DO 10.1002/navi.357
VO 67
IS 2
A1 Ignacio Fernández-Hernández
A1 Tommaso Senni
A1 Daniele Borio
A1 Giovanni Vecchione
YR 2020
UL https://navi.ion.org/content/67/2/365.abstract
AB This paper presents in detail an outer-coding proposal for long GNSS messages disseminated by multiple satellites. The proposal minimizes the message reception time, or Time To Retrieve Data (TTRD), over a page erasure channel in most types of environments and visibility conditions. A message M consisting of k pages is encoded into a set C consisting of n pages, such that when any subset C′ of C of k pages is correctly received, the message can be decoded. The scheme vertically encodes each page symbol in a separate high-parity Reed-Solomon code and allocates different parts of it to different satellites. The scheme has been designed for the Galileo High Accuracy Service (HAS), but it can be used for longer messages and other constellations. The performance results show TTRDs on the order of few seconds, at a very low decoding complexity for the receiver.