Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)
Current Result Document :
ÇѱÛÁ¦¸ñ(Korean Title) |
Sign-magnitude ¼öü°è ±â¹ÝÀÇ WiMAX¿ë ´ÙÁ߸ðµå LDPC º¹È£±â ¼³°è |
¿µ¹®Á¦¸ñ(English Title) |
A Design of Sign-magnitude based Multi-mode LDPC Decoder for WiMAX |
ÀúÀÚ(Author) |
¼ÁøÈ£
¹ÚÇØ¿ø
½Å°æ¿í
Jin-ho Seo
Hae-won Park
Kyung-wook Shin
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¿ø¹®¼ö·Ïó(Citation) |
VOL 15 NO. 11 PP. 2465 ~ 2473 (2011. 11) |
Çѱ۳»¿ë (Korean Abstract) |
WiMAX, WLAN µîÀÇ ¹«¼±Åë½Å ½Ã½ºÅÛ¿¡ »ç¿ëµÇ´Â LDPC(low density parity check) º¹È£±âÀÇ ÇÙ½É ±â´Éºí·ÏÀÎ DFU(decoding function unit)ÀÇ È¸·Î ÃÖÀûȸ¦ Á¦¾ÈÇÑ´Ù. DFU¸¦ 2ÀÇ º¸¼ö ¿¬»ê ´ë½Å¿¡ sign-magnitude ¿¬»ê ±â¹ÝÀ¸·Î ¼³°èÇÔÀ¸·Î½á ¼öü°è º¯È¯°úÁ¤À» Á¦°ÅÇÏ¿´À¸¸ç, ¸ð¹ÙÀÏ WiMAX¿ë ´ÙÁ߸ðµå LDPC º¹È£±â¿¡ »ç¿ëµÇ´Â 96°³ DFU ¹è¿ÀÇ °ÔÀÌÆ® ¼ö¸¦ 18% °¨¼Ò½ÃÄ×´Ù. Á¦¾ÈµÈ DFU ±¸Á¶¸¦ Àû¿ëÇÏ¿© ¸ð¹ÙÀÏ WiMAX Ç¥ÁØÀ» Áö¿øÇÏ´Â ´ÙÁ߸ðµå LDPC º¹È£±â¸¦ ¼³°èÇÏ¿´´Ù. ¼³°èµÈ LDPC º¹È£±â´Â 0.18-§ CMOS ¼¿ ¶óÀ̺귯¸®¸¦ ÀÌ¿ëÇÏ¿© 50 MHz Ŭ·ÏÁÖÆļö·Î ÇÕ¼ºÇÑ °á°ú 268,870 °ÔÀÌÆ®¿Í 71,424 ºñÆ®ÀÇ ¸Þ¸ð¸®·Î ±¸ÇöµÇ¾úÀ¸¸ç, FPGA ±¸ÇöÀ» ÅëÇØ Çϵå¿þ¾î µ¿ÀÛÀ» °ËÁõÇÏ¿´´Ù.
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¿µ¹®³»¿ë (English Abstract) |
This paper describes a circuit-level optimization of DFU(decoding function unit) for LDPC decoder which is used in wireless communication systems including WiMAX and WLAN. A new design of DFU based on sign-magnitude arithmetic instead of two's complement arithmetic is proposed, resulting in 18% reduction of gate count for 96 DFUs array used in mobile WiMAX LDPC decoder. A multi-mode LDPC decoder for mobile WiMAX standard is designed using the proposed DFU. The LDPC decoder synthesized using a 0.18-§ CMOS cell library with 50 MHz clock has 268,870 gates and 71,424 bits RAM, and it is verified by FPGA implementation.
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Å°¿öµå(Keyword) |
LDPC ºÎÈ£
¿¡·¯Á¤Á¤ºÎÈ£
ÃÖ¼ÒÇÕ ¾Ë°í¸®µë
IEEE 802.16e
LDPC(low density parity check) code
error correction code
min-sum algorithm
IEEE 802.16e
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PDF ´Ù¿î·Îµå
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