Çѱ¹Á¤º¸Åë½ÅÇÐȸ ³í¹®Áö (Journal of the Korea Institute of Information and Communication Engineering)
Current Result Document :
ÇѱÛÁ¦¸ñ(Korean Title) |
¸ÖƼ Æ÷ÀÎÆ® ½Ã½ºÅÛ¿¡¼ ½Ã½ºÅÛ ·¹º§ ½Ã¹Ä·¹À̼ǿ¡ ±â¹ÝÀ» µÐ ½ºÆåÆ®·³ È¿À²¼º °ËÁõ |
¿µ¹®Á¦¸ñ(English Title) |
Spectral Efficiency Evaluation of Coordinated Multi-point Systems Based on System Level Simulations |
ÀúÀÚ(Author) |
Á¤¹æö
½Å¿ø¿ë
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Bang Chul Jung
Won-Yong Shin
Tae Won Ban
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¿ø¹®¼ö·Ïó(Citation) |
VOL 15 NO. 10 PP. 2113 ~ 2120 (2011. 10) |
Çѱ۳»¿ë (Korean Abstract) |
º» ³í¹®¿¡¼´Â ¼¿ °æ°èÁö¿ª »ç¿ëÀÚÀÇ ½ºÆåÆ®·³ È¿À²¼º Çâ»óÀ» À§ÇÏ¿© 3GPP LTE-A (Long-Term Evolution- Advanced) ½Ã½ºÅÛ¿¡¼ ³íÀǵǴ ¼¿ °£ Çù·Â Àü¼Û±â¹ý Áß ÇϳªÀÎ CoMP (Coordinated Multi-Point) ½Ã½ºÅÛÀ» ¼Ò°³ÇÏ°í, ¼º´É °ËÁõÀ» À§ÇØ ½Ã½ºÅÛ ·¹º§ ½Ã¹Ä·¹ÀÌÅ͸¦ °³¹ßÇÑ´Ù. ¼¿ °£ Çù·Â Àü¼Û ½Ã ½Ã½ºÅÛÀÇ ¼º´É °³¼± Á¤µµ¸¦ È®ÀÎÇϱâ À§ÇÏ¿© ±âÁ¸ À̵¿Åë½Å ½Ã½ºÅÛ Áß °¡Àå ³ôÀº ¼º´ÉÀ» º¸ÀÌ´Â 3GPP LTE-A ½Ã½ºÅÛÀ» ÂüÁ¶ ½Ã½ºÅÛÀ¸·Î ¼±Á¤ÇÏ¿© ¼º´É ºñ±³¸¦ ¼öÇàÇÑ´Ù. CoMP ½Ã½ºÅÛ ·¹º§ ½Ã¹Ä·¹À̼ÇÀº ³Î¸® »ç¿ëµÇ°í ÀÖ´Â OPNETÀ» ±â¹ÝÀ¸·Î Çϴµ¥, ¼¿ °£ Çù·Â Àü¼Û ½Ã½ºÅÛ ¼³°è¸¦ ¹ÙÅÁÀ¸·Î CU (Central Unit), CeNB (CoMP eNodeB), UE (User Equipment), MIMO (Multiple-Input Multiple-Output) ä³Î ¸ðµ¨ µîÀÇ ¸ðµâÀ» ±¸ÇöÇÑ´Ù. WINNER ¹«¼± ä³Î ¸ðµ¨ ¹× ITU (International Telecommunication Union) ³×Æ®¿öÅ© ¸ðµ¨ ȯ°æÀ» ÅëÇÏ¿© ÇÏÀ§ 5%ÀÇ ½ºÆåÆ®·³ È¿À²¼ºÀ» °¡Áö´Â ¼¿ °¡ÀåÀÚ¸® »ç¿ëÀÚÀÇ ¼º´ÉÀ» °ËÁõÇÒ ¶§, 3GPP LTE-A ÂüÁ¶ ½Ã½ºÅÛ ´ëºñ Á¦¾ÈÇÑ CoMP ½Ã½ºÅÛÀÇ ¿ë·®ÀÌ ¾à 2.5¹è Á¤µµ Áõ°¡ÇÏ¿´À½À» º¸ÀδÙ.
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¿µ¹®³»¿ë (English Abstract) |
In this paper, so as to improve spectral efficiency for cell-boundary users, we introduce a coordinated multi-point (CoMP) system, which is one of inter-cell cooperative transmission strategies studied in 3GPP long-term evolution-advanced (LTE-A) systems, and develop a system-level simulator to evaluate performance. To identify performance improvement of the system with inter-cell cooperative transmission, we select a 3GPP LTE system as a reference, which shows the highest performance among the existing mobile communication systems, and conduct a performance comparison. System-level simulation is performed based on widely-used OPNET tool. We implement modules including central unit (CU), CoMP eNodeB (CeNB), user equipment (UE), and multiple-input multiple-output (MIMO) channel model, while designing the inter-cell cooperative transmission system. Under WINNER wireless channel model and international telecommunication union (ITU) network model environments, we then evaluate the performance of edge users who belong to the lower 5% in terms of spectral efficiency. It is finally shown that throughput of the proposed CoMP system gets improved up to 2.5 times compared to that of the 3GPP LTE reference system.
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Å°¿öµå(Keyword) |
¼¿ °æ°èÁö¿ª »ç¿ëÀÚ
½Ã½ºÅÛ ·¹º§ ½Ã¹Ä·¹À̼Ç
½ºÆåÆ®·³ È¿À²¼º
ÀÏ¿øÈµÈ ¸ÖƼ Æ÷ÀÎÆ®
Cell-boundary user
system-level simulation
spectrum efficiency
coordinated multi-point (CoMP)
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