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Ȩ Ȩ > ¿¬±¸¹®Çå > ±¹³» ³í¹®Áö > Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)

Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)

Current Result Document :

ÇѱÛÁ¦¸ñ(Korean Title) Benes ³×Æ®¿öÅ© Á¦¾î ½ÅÈ£ ÃÖÀûÈ­¸¦ ÀÌ¿ëÇÑ WiMAX QC-LDPC º¹È£±â¿ë Àú¸éÀû/°í¼Ó Multi-Size Circular Shifter
¿µ¹®Á¦¸ñ(English Title) Low-Complexity and High-Speed Multi-Size Circular Shifter With Benes Network Control Signal Optimization for WiMAX QC-LDPC Decoder
ÀúÀÚ(Author) °­ÇüÁÖ   Hyeong-Ju Kang  
¿ø¹®¼ö·Ïó(Citation) VOL 19 NO. 10 PP. 2367 ~ 2372 (2015. 10)
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(Korean Abstract)
Ź¿ùÇÑ ¿¡·¯ Á¤Á¤ ´É·ÂÀ¸·Î ÀÎÇØ ÃÖ±Ù Åë½Å Ç¥ÁØ¿¡¼­ ¸¹ÀÌ Ã¤Åõǰí ÀÖ´Â low-density parity-check(LDPC) ÄÚµå Áß, quasi-cyclic LDPC(QC-LDPC) ÄÚµå´Â º¹È£±â º¹Àâµµ°¡ ºñ±³Àû ³·¾Æ¼­ ¸¹ÀÌ »ç¿ëµÇ°í ÀÖ´Ù. QC-LDPC ÄÚµåÀÇ º¹È£±â ¼³°è¿¡ À־ Áß¿äÇÑ ºí·Ï Áß Çϳª°¡ ¿©·¯ °¡Áö Å©±âÀÇ rotationÀ» ¼öÇàÇÒ ¼ö ÀÖ´Â multi-size circular shifter(MSCS)ÀÌ´Ù. MSCSÀÇ ¿©·¯ ±¸Çö ¹æ¹ý Áß ¸¹ÀÌ »ç¿ëµÇ´Â Benes ³×Æ®¿öÅ©´Â ÀϹÝÀûÀÎ MSCS µ¿ÀÛ¿¡´Â È¿À²ÀûÀ̳ª rotation Å©±â µîÀÇ Æ¯Â¡À» ÀÌ¿ëÇÒ ¼ö ¾ø´Â ´ÜÁ¡ÀÌ ÀÖ´Ù. ÀÌ ³í¹®¿¡¼­´Â Benes ³×Æ®¿öÅ©ÀÇ Á¦¾î ½ÅÈ£ »ý¼ºÀ» ¼öÁ¤ÇÏ¿©¼­ rotation Å©±â Ư¡À» ÀÌ¿ëÇÒ ¼ö ÀÖ´Â ¹æ¹ýÀ» Á¦½ÃÇÑ´Ù. Á¦¾ÈµÈ Á¦¾î ½ÅÈ£ »ý¼º¹ýÀ» IEEE 802.16e WiMAX Ç¥ÁØÀÇ QC-LDPC ÄÚµå º¹È£±â¿¡ Àû¿ëÇÏ¿©, MUXÀÇ °³¼ö¸¦ ÁÙÀÌ°í Áö¿¬ ½Ã°£À» ´ÜÃàÇÏ¿´´Ù.
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(English Abstract)
One of various low-density parity-check(LDPC) codes that has been adopted in many communication standards due to its error correction ability is a quasi-cyclic LDPC(QC-LDPC) code, which leads to comparable decoder complexity. One of the main blocks in the QC-LCDC code decoder is a multi-size circular shifter(MSCS) that can perform various size rotation. The MSCS can be implemented with many structures, one of which is based on Banes network. The Benes network structure can perform the normal MSCS operation efficiently, but it cannot use the properties coming from specifications like rotation sizes. This paper proposesd a scheme where the Benes network structure can use the rotation size property with the modification of the control signal generation. The proposed scheme is applied to the MSCS of IEEE 802.16e WiMAX QC-LDPC decoder to reduce the number of MUXes and the critical path delay.
Å°¿öµå(Keyword) LDPC º¹È£±â   QC-LDPC º¹È£±â   cyclic-shifter   multi-size circular shifter   LDPC decoder   QC-LDPC decoder   LDPC decoder   QC-LDPC decoder  
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