A New MPE-FEC Decoding Algorithm
Chul Seung Kim, Min Hyuk Kim, Tae Doo Park, Ji Won Jung · 2010
[ABSTRACT] DVB-SSP is a new broadcasting system for hybrid satellite communications, which supports reliable high data rate reception for mobile handheld systems and fixed terrestrial systems. An upper layer, including erasure Reed-Solomon error correction combined with cyclic redundancy check (CRC), is defined in draft versions of the standard for DVB-SSP. However, a critical factor must be considered when dealing with a long-term fading channel such as a railway channel. 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 two kinds of upper layer decoding methods; LLR-based decoding and hybrid decoding. By means of simulation we show that the performance of the proposed decoding algorithm is superior to that of the conventional one.