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A Raptor-based Adaptive Erasure Code over Ka-band Space Channel

Authors:
Jie Zhou
Jian Jiao
Zhi-hua Yang
Shu-shi Gu
Qin-yu Zhang

Keywords: Ka-band; Raptor code; forecast model; CFDP asynchronous NAK mode

Abstract:
In order to efficiently resist the influence of weather dynamics over Ka-band link, this paper designs a practical Raptor based erasure code combined with a forecast model, which has adaptive code rate on different weather. The forecast model could capture the weather correlation through the Gilbert-Elliot model, and lower the forecast errors by employing CFDP (CCSDS File Delivery Protocol) asynchronous NAKs (Negative Acknowledgement) to feed back the channel state information (CSI). We provide analytical results on forecast error and simulation shows that the algorithm can significantly enhance the decoding performance, especially in the bad weather state, and maintain the link availability and high throughput over Ka-band weather dependent link.

Pages: 48 to 52

Copyright: Copyright (c) IARIA, 2012

Publication date: April 29, 2012

Published in: conference

ISSN: 2308-4480

ISBN: 978-1-61208-194-6

Location: Chamonix, France

Dates: from April 29, 2012 to May 4, 2012