New Research on Fountain Codes

#Communications #coding #theory #5G.
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Digital fountain codes (also known as rateless codes) are a class of forward-error-correction (FEC) codes that require almost no feedback with simple encoding and decoding structures. The famous fountain codes are LT codes and Raptor codes. Fountain codes are applied to application layer coding and two systematic Raptor codes have been adopted by 3GPP Multimedia Broadcast Multicast Services (MBMS). In recent years, the design of fountain codes has been extended to noisy channels (e.g., BIAWGN channels and fading channels). In physical layer, an erroneous estimation of the signal-to-noise ratio (SNR) will significantly degrade the decoding performance. The research on performance analysis of fountain codes with channel estimation errors under belief-propagation (BP) decoding has not yet been investigated so far. Motivated by this, this talk will first discuss how to analyse BP decoding performance of LT codes with channel estimation errors. Second, this talk will introduce a modified design of Raptor codes for small message length. Lastly, this talk will discuss cross-layer design that has concentrated on the joint optimisation of application layer FEC and physical layer FEC over wireless channels.


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  • 115 North Road
  • Acton, Australian Capital Territory
  • Australia 2601
  • Building: Brian Anderson Building
  • Room Number: A206
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  Speakers

Lei Yuan of Lanzhou University

Biography:

Lei Yuan (IEEE member) received the B.S. and M.S. degrees in electrical engineering from University of Electronic Science and Technology of China (UESTC), Chengdu, China in 2004 and 2007, respectively. He received his Ph.D. degree from Beijing Institute of Technology, Beijing, China in 2011. Currently, he is a Lecturer at the School of Information Science & Engineering, Lanzhou University. His research interests include coding theory and wireless communications. He was invited as a TPC member of VTC2016-Fall and VTC2017-Spring. He has published more than 30 research papers in international journals and conferences.

Address:School of Information Science & Engineering, Lanzhou University, Lanzhou, China

Lei Yuan of Lanzhou University

Biography:

Address:Lanzhou, China