Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)
Current Result Document :
ÇѱÛÁ¦¸ñ(Korean Title) |
°ËÃâ º¹Àâµµ¸¦ °¨¼Ò½ÃÅ°´Â Depth-first branch and bound ¾Ë°í¸®Áò ±â¹Ý µðÄÚ´õ |
¿µ¹®Á¦¸ñ(English Title) |
Depth-first branch-and-bound-based decoder with low complexity |
ÀúÀÚ(Author) |
ÀÌÀºÁÖ
S.M.Humayun Kabir
À±±â¿Ï
Eunju Lee
S. M. Humayun Kabir
Giwan Yoon
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¿ø¹®¼ö·Ïó(Citation) |
VOL 13 NO. 12 PP. 2525 ~ 2532 (2009. 12) |
Çѱ۳»¿ë (Korean Abstract) |
º» ³í¹®¿¡¼´Â uncoded V-BLAST(Vertical Bell Laboratories Layered Space Time) ½Ã½ºÅÛ¿¡¼ PSK ½ÅÈ£µéÀ» joint-detectionÇϱâ À§ÇÑ fast sphere decoder¸¦ Á¦¾ÈÇÑ´Ù. À̸¥¹Ù PSD¶ó ºÒ¸®´Â Á¦¾ÈµÈ µðÄÚ´õ´Â ¿¹ºñ󸮴ܰè¿Í °Ë»ö´Ü°è·Î ±¸¼ºµÈ´Ù. PSDÀÇ °Ë»ö´Ü°è¿¡¼´Â depth-first branch and bound ¾Ë°í¸®ÁòÀ» ÅëÇØ °ËÃâ È帰¡ µÇ´Â ½ÅÈ£¿øµéÀÇ ÃÖ»ó¿ì¼±¼øÀ§(best-first order)¸¦ Á¤ÇÏ°í ÀÌ ¼øÀ§¿¡ µû¶ó ½ÅÈ£¸¦ °ËÃâÇÏ°Ô µÈ´Ù. ÀÌ ¶§ Á¦¾ÈµÈ µðÄÚ´õ´Â ÃÖ»ó¿ì¼±¼øÀ§(best-first order)¸¦ Á¤Çϴµ¥ ÀÖ¾î °è»êº¹À⼺À» ÁÙÀÌ´Â »õ·Î¿î ¹æ¹ýÀ» Á¦¾ÈÇÑ´Ù. ½Ã¹Ä·¹ÀÌ¼Ç °á°ú´Â PSD¿¡ ÀÇÇØ ½Ã½ºÅÛÀÇ º¹À⼺Àº ÁÙÀÌ¸é¼ ½Ã½ºÅÛ ¼º´ÉÀº ML°ú µ¿ÀÏÇÏ°Ô À¯ÁöÇÒ ¼ö ÀÖÀ½À» º¸¿©ÁØ´Ù.
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¿µ¹®³»¿ë (English Abstract) |
In this paper, a fast sphere decoder is proposed for the joint detection of phase-shift keying (PSK) signals in uncoded Vertical Bell Laboratories Layered Space Time (V-BLAST) systems. The proposed decoder, PSD, consists of preprocessing stage and search stage. The search stage of PSD relies on the depth-first branch-and-bound (BB) algorithm with ¡®¡®best-first¡¯¡¯ orders stored in lookup tables. Simulation results show that the PSD is able to provide the system with the maximum likelihood (ML) performance at low complexity.
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Å°¿öµå(Keyword) |
space-time coding
multi-input multi-output
maximum likelihood detection
Pham SD
space-time coding
multi-input multi-output
maximum likelihood detection
Pham SD
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ÆÄÀÏ÷ºÎ |
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