Current Result Document :
ÇѱÛÁ¦¸ñ(Korean Title) |
Á÷±³ ÁÖÆļö ºÐÇÒ ´ÙÁß Á¢¼Ó ½Ã½ºÅÛ¿¡¼ ÃÖ´ë ½Ã½ºÅÛ ¿ë·®À» À§ÇÑ ÀûÀÀÀû Àü·Â ºÐ¹è ¹æ½Ä |
¿µ¹®Á¦¸ñ(English Title) |
An Adaptive Power Allocation Scheme Maximizing OFDMA System Capacity |
ÀúÀÚ(Author) |
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Sungho Hwang
Soonchul Park
Ho-Shin Cho
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¿ø¹®¼ö·Ïó(Citation) |
VOL 19 NO. 01 PP. IVC3 ~ 0005 (2009. 04) |
Çѱ۳»¿ë (Korean Abstract) |
º» ³í¹®Àº Á÷±³ ÁÖÆļö ºÐÇÒ ´ÙÁß Á¢¼Ó (Orthogonal Frequency Division Multiple Access: OFDMA) ¹æ½Ä°ú ÀûÀÀ º¯Á¶ ¹× ÄÚµù (Adaptive Modulation and Coding: AMC)À» »ç¿ëÇÏ´Â ½Ã½ºÅÛ¿¡¼ ½Ã½ºÅÛ ¿ë·® (System Capacity)À» ÃÖ´ëÈ Çϱâ À§ÇÑ Àü·ÂºÐ¹è ¾Ë°í¸®ÁòÀ» Á¦¾ÈÇÏ°í ±× ¼º´ÉÀ» ¼öÇÐÀûÀ¸·Î Áõ¸íÇÑ´Ù. ¶ÇÇÑ ÄÄÇ»ÅÍ ½Ã¹Ä·¹À̼ÇÀ» ÅëÇØ ±âÁ¸ÀÇ greedy APA (Adaptive Power Allocation)¹æ½Ä°ú º¹Àâµµ Ãø¸é¿¡¼ ¼º´ÉÀ» ºñ±³ÇÑ´Ù. Á¦¾ÈÇÑ ¹æ½ÄÀº ¿¬¼ÓÀûÀÎ ½Ã½ºÅÛ ¿ë·® ÇÔ¼ö¸¦ ±â¹ÝÀ¸·Î Á¦¾ÈµÈ ±âÁ¸ÀÇ water-filling ¹æ½ÄÀ» È°¿ëÇ쵂 ½ÇÁ¦ ½Ã½ºÅÛ¿¡¼ »ç¿ëÇÏ´Â ÀûÀÀ º¯Á¶ ¹× ÄÚµù ȯ°æ, Áï, ºÒ¿¬¼ÓÀûÀÎ ½Ã½ºÅÛ ¿ë·® ÇÔ¼ö¿¡ ¸ÂÃß¾î ÃÖÀûÀÇ Àü·ÂÀ» ÇÒ´çÇÒ ¼ö ÀÖµµ·Ï ¼³°èµÇ¾ú´Ù. ¼º´ÉºÐ¼® °á°ú Á¦¾ÈÇÑ ¹æ½ÄÀº ºÒ¿¬¼ÓÀûÀÎ ÀûÀÀ º¯Á¶ ¹× ÄÚµù ȯ°æ¿¡¼ ½Ã½ºÅÛ À¯Æ¿¸®Æ¼ ÇÔ¼ö (System Utility Function)¸¦ ÃÖ´ë·Î Çϱâ À§ÇØ Á¦¾ÈµÈ ±âÁ¸ÀÇ greedy APA ¿Í ºñ±³ÇØ, ½Ã½ºÅÛ ¿ë·®Àº ÀÏÄ¡ÇÏ¸é¼ ¾Ë°í¸®Áò ó¸® ½Ã°£ÀÌ 80%ÀÌ»ó °¨¼ÒÇÑ °á°ú¸¦ º¸¿©ÁÖ¾ú´Ù.
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