Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)
Current Result Document :
ÇѱÛÁ¦¸ñ(Korean Title) |
MIMO¿¡¼ ½Ã°ø°£ ºÎÈ£ÈµÈ MDPSKÀÇ ¼º´ÉÀ» Çâ»ó½ÃÅ°±â À§ÇÑ Â÷µ¿ °ËÆÄ ½Ã½ºÅÛ |
¿µ¹®Á¦¸ñ(English Title) |
Improved Differential Detection Scheme of Space-Time Trellis Coded MDPSK For MIMO |
ÀúÀÚ(Author) |
±èÁ¾ÀÏ
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Chong-Il Kim
Ho-Jin Lee
Hang-youal Yoo
Jin-yong Kim
Seung-youal Kim
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¿ø¹®¼ö·Ïó(Citation) |
VOL 10 NO. 10 PP. 1869 ~ 1876 (2006. 10) |
Çѱ۳»¿ë (Korean Abstract) |
ÃÖ±Ù¿¡ ½Ã°ø°£ ºÎÈ£È(Space-Time Code, STC)´Â Â÷¼¼´ë À̵¿ Åë½Å¿¡¼ °í¼ÓÀÇ ½Å·Ú¼º ÀÖ´Â Åë½ÅÀ» À§ÇØ °¢±¤¹Þ°í ÀÖ´Ù. º» ³í¹®¿¡¼´Â ´ÙÁß°æ·Î ÆäÀ̵ù ä³Î¿¡¼ °í¼ÓÀÇ µ¥ÀÌÅ͸¦ Àü¼ÛÇÏ°íÀÚ ÇÒ °æ¿ì¿¡ ¼º´ÉÀ» Çâ»ó½ÃÅ°°íÀÚ Æ®·¼¸®½º ºÎȣȵÈ(Trellis-Coded, TC) Â÷µ¿ ½Ã°ø°£ º¯Á¶(Differential Space Time Modulation, DSTM)¸¦ »ç¿ëÇÑ MDPSK¿¡¼ ´ÙÁß ½É¹ú °ËÆÄ ½Ã½ºÅÛÀ» Á¦¾ÈÇÑ´Ù. Â÷µ¿ ½Ã°ø°£ ¤²È£ÈµÈ MDPSKÀÇ ¼º´ÉÀ» Çâ»ó½ÃÅ°±â À§ÇØ DUSTM(differential unitary space-time modulation)À» ÀÌ¿ëÇÏ¿© ¼Û½Å±â¸¦ ¼³°èÇÏ°í ¼ö½Å´Ü¿¡¼ ´ÙÁß ½É¹ú °ËÆĸ¦ ¼öÇàÇÏ´Â ¼ö½Å±â¿Í µðÄÚµù ¾Ë°í¸®µëÀ» °³¹ßÇϸç, À̸¦ À§ÇÑ »õ·Î¿î °¡Áö ¸ÞÆ®¸¯À» À¯µµÇÑ´Ù. |
¿µ¹®³»¿ë (English Abstract) |
Recently, STC techniques have been considered to be candidate to support multimedia services in the next generation mobile radio communications and have been developed the many communications systems in order to achieve the high data rates. In this paper, we propose the Trellis-Coded Differential Space Time Modulation system with multiple symbol detection. The trellis-code performs the set partition with unitary group codes. The viterbi decoder containing new branch metrics is introduced in order to improve the bit error rate (BER) in the differential detection of the unitary differential space time modulation. Also, we describe the Viterbi algorithm in order to use this branch metrics. Our study shows that such a Viterbi decoder improves BER performance without sacrificing bandwidth and power efficiency.
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Å°¿öµå(Keyword) |
½Ã°ø°£ ºÎÈ£(space-time code)
TCM
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