A New Upper Layer Decoding Algorithm for MPE-FEC based on LLR

LLR 기반의 MPE-FEC 상위계층 복호 방식

  • 김철승 (한국해양대학교 전파공학과) ;
  • 김민혁 (한국해양대학교 전파공학과) ;
  • ;
  • 김남수 (한국해양대학교 전파공학과) ;
  • 정지원 (한국해양대학교 전파공학과)
  • Published : 2009.10.31

Abstract

DVB-SSP is a new broadcasting system for hybrid satellite communications, which supports mobile handheld systems and fixed terrestrial systems. An upper layer, including erasure Reed-Solomon error correction combined with cyclic redundancy check. However, a critical factor must be considered in upper layer decoding. If there is only one bit error in an IP packet, the entire IP packet is considered as unreliable bytes, even if it contains correct bytes. If, for example, there is one real byte error, in an IP packet of 512 bytes, 511 correct bytes are erased from the frame. Therefore, this paper proposed upper layer decoding methods; LLR-based decoding. By means of simulation we show that the performance of the proposed decoding algorithm is superior to that of the conventional one.

References

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