Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)
Current Result Document :
ÇѱÛÁ¦¸ñ(Korean Title) |
LLR ±â¹ÝÀÇ MPE-FEC »óÀ§°èÃþ º¹È£ ¹æ½Ä |
¿µ¹®Á¦¸ñ(English Title) |
A New Upper Layer Decoding Algorithm for MPE-FEC based on LLR |
ÀúÀÚ(Author) |
±èö½Â
±è¹ÎÇõ
±è³²¼ö
Á¤Áö¿ø
Chul-seung Kim
Min-hyuk Kim
Tae-doo Park
Nam-soo Kim
Ji-won Jung
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¿ø¹®¼ö·Ïó(Citation) |
VOL 13 NO. 10 PP. 2227 ~ 2234 (2009. 10) |
Çѱ۳»¿ë (Korean Abstract) |
À̵¿Ã¼¿¡ ´ëÇؼ À§¼ºÀ» ÀÌ¿ëÇÑ Åë½Å ¹æ½ÄÀ» ±ÔÁ¤ÇÏ°í ÀÖ´Â DVB-SSP Ç¥ÁØÈ¿¡¼´Â Physical Layer ¿Í Upper Layer ÀÇ µÎ ´Ü°è·Î ºÎÈ£È ¹× º¹È£È¸¦ ÇÑ´Ù. ¼ö½Å´Ü¿¡¼ Physical LayerÀÇ º¹È£ ¹æ½ÄÀÎ LDPC º¹È£ ÈÄ Upper LayerÀÇ erasure RS º¹È£¸¦ À§ÇØ, CRC °Ë»ç¸¦ ¼öÇàÇÏ¿© ¼ö½ÅµÈ µ¥ÀÌÅÍ¿¡¼ 1 bit ÀÇ ¿À·ù¹ß»ý¿¡µµ IP ÆÐŶ ¸ðµÎ¸¦ »èÁ¦ÇÔÀ¸·Î½á º¹È£ ½Ã ºñÈ¿À²¼ºÀ» Áõ°¡½Ãų ¼ö ÀÖ´Ù. µû¶ó¼ º» ³í¹®¿¡¼´Â LDPC º¹È£±â¿¡ Ãâ·ÂµÇ´Â LLR °ªÀ» ÀÌ¿ëÇÏ¿© IP ÆÐŶ Àüü¸¦ »èÁ¦ÇÏ´Â °ÍÀÌ ¾Æ´Ï¶ó LLR °ªÀÌ ³·Àº ºñÆ®¸¸ ¼±ÅÃÀûÀ¸·Î »èÁ¦ÇÏ´Â ¹æ½ÄÀ» Á¦¾ÈÇϸç, À̸¦ ½Ã¹Ä·¹ÀÌ¼Ç ÇÏ¿© ±âÁ¸ÀÇ CRC ¹æ½Ä°ú ºñ±³ÇÏ¿´´Ù.
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¿µ¹®³»¿ë (English 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.
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Å°¿öµå(Keyword) |
DVB-SSP
LLR
LDPC CODE
MPE-FEC
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ÆÄÀÏ÷ºÎ |
PDF ´Ù¿î·Îµå
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