Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)
Current Result Document :
ÇѱÛÁ¦¸ñ(Korean Title) |
IMT-2000¿ë ºñÅͺñ º¹È£±âÀÇ È¿À²ÀûÀÎ ¼³°è |
¿µ¹®Á¦¸ñ(English Title) |
Design of Viterbi Decoder for IMT-2000 |
ÀúÀÚ(Author) |
Á¤ÀÎÅ㬼ۻó¼·
In-Taek Jeong
Sang-Seob Song
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¿ø¹®¼ö·Ïó(Citation) |
VOL 05 NO. 01 PP. 0067 ~ 0072 (2001. 05) |
Çѱ۳»¿ë (Korean Abstract) |
±âÁ¸ IS-95 ½Ã½ºÅÛ°ú ´Þ¸® IMT-2000 ½Ã½ºÅÛ¿¡¼ »ç¿ëµÇ´Â ±æ½ÓºÎÈ£´Â ´Ù¾çÇÑ ºÎÈ£À²À» °¡Áö¸ç£¬ µ¥ÀÌÅÍ Àü¼Û¼Óµµ(ÃÖ´ë 384 kbps) ¶ÇÇÑ ´Ù¾çÇÏ´Ù. ±×¸®°í ä³Î ºÎÈ£ÈµÈ ½Éº¼µéÀº ½Éº¼À²À» Á¤ÇÕÇϱâ À§ÇÏ¿© ÃÖ ´ë 8¹ø ¹Ýº¹ÇÏ¿© Àü¼ÛµÈ´Ù. ÀÌ·Î ÀÎÇØ IMT-2000 ½Ã½ºÅÛÀº IS-95 ½Ã½ºÅÛ¿¡ ºñÇØ µ¥ÀÌÅÍÀ²ÀÌ ÃÖ´ë 40¹è£¬ ÀÔ·Â ¹öÆÛ°¡ 80¹è Áõ°¡ÇÏ°Ô µÈ´Ù. ÀÌ·¯ÇÑ Çϵå¿þ¾îÀÇ º¹Àâµµ¸¦ ÁÙÀ̱â À§ÇØ IS-95 ½Ã½ºÅÛ¿¡¼ ä¿ëµÈ ºñÅͺñ º¹È£±âÀÇ 4ºñÆ® ¿¬¼ºÆÇÁ¤À» ´ëÄ¡ÇÒ ¼ö ÀÖ´Â 3ºñÆ® ¿¬¼ºÆÇÁ¤ÀÌ ÇÊ¿äÇÏ´Ù.
ÀÌ¿¡ ´ëÇØ£¬ º» ³í¹®¿¡¼´Â IMT-2000 ½Ã½ºÅÛ¿¡ Àû¿ëÇÒ ¼ö ÀÖÀ¸¸ç£¬ 4ºñÆ® ¿¬¼ºÆÇÁ¤ ºñÅͺñ º¹È£±â¸¦ ´ëüÇÒ ¼ö ÀÖ´Â 3ºñÆ® ¿¬¼ºÆÇÁ¤ ºñÅͺñ º¹È£±â ±¸Á¶¸¦ Á¦½ÃÇϸ磬 ½Éº¼ ¹Ýº¹À²¿¡ µû¶ó Áõ°¡µÈ ½Éº¼ Ç¥ÇöÀ» À§ÇÑ ºñÆ®¼ö¸¦ 3ºñÆ®·Î Ç¥ÇöÇÒ ¼ö ÀÖ´Â »õ·Î¿î SMT(Symbol Metric Table)¸¦ »ý¼ºÇÑ´Ù.
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¿µ¹®³»¿ë (English Abstract) |
Convolutional code and turbo code are used in the forward and backward link of IMT-2¥álO. In this research, we will be in consideration of Viterbi algorithm In this paper, we design Viterbi decoder with 3-bits soft decision and SMT for the convolutional code in the forward link and backward li¸¶ of IMT-2000 sys¾Êm. The major parameters of 3-bits Viterbi decoder is deterrnined by simulation to have identical performance with the 4-bit soft decision Viterbi decoder.
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