• Àüü
  • ÀüÀÚ/Àü±â
  • Åë½Å
  • ÄÄÇ»ÅÍ
´Ý±â

»çÀÌÆ®¸Ê

Loading..

Please wait....

±¹³» ³í¹®Áö

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 : 4 / 6

ÇѱÛÁ¦¸ñ(Korean Title) WCDMA½Ã½ºÅÛ ¹«¼± Áß°è±âÀÇ ÀûÀÀ°£¼·Á¦°Å±â¿¡ °üÇÑ ¿¬±¸
¿µ¹®Á¦¸ñ(English Title) A Study on Adaptive Interference Canceller of Wireless Repeater for Wideband Code Division Multiple Access System
ÀúÀÚ(Author) ÇÑ¿ë½Ä   ¾ç¿î±Ù   Yong-Sik Han   Woon-Geun Yang  
¿ø¹®¼ö·Ïó(Citation) VOL 13 NO. 07 PP. 1321 ~ 1327 (2009. 07)
Çѱ۳»¿ë
(Korean Abstract)
º» ³í¹®¿¡¼­´Â ÃÖ±Ù ¹æ¼Û ¹× À̵¿ Åë½Å ¼­ºñ½º°¡ ±¤¹üÀ§ÇÏ°Ô »ç¿ëµÇ°í ¼­ºñ½º ¿µ¿ªÀÇ ¿ëÀÌÇÑ È®´ë·Î ÀÎÇØ ¹«¼±Áß°è±â¿¡ ´ëÇÑ ¼ö¿ä°¡ ±Þ°ÝÈ÷ Áõ°¡ÇÏ°í ÀÖ´Ù. ±×·¯³ª ¹«¼±Áß°è±â¿¡¼­ ¹ß»ýµÇ´Â ±Ëȯ ½ÅÈ£·Î ÀÎÇÑ ¹ßÁøÇö»óÀÌ ¹ß»ýÇÑ´Ù. ±×·ìÈ­ LMS(Least Mean Square)¿Í CMA(Constant Modulus Algorithm) ¾Ë°í¸®ÁòÀ» ÀÌ¿ëÇÑ ÀûÀÀ ÇÊÅ͸¦ Àû¿ë½ÃŲ »õ·Î¿î È¥ÇÕ °£¼· Á¦°Å±â¸¦ Á¦¾ÈÇÑ´Ù. Á¦¾ÈÇÑ °£¼· Á¦°Å±â´Â ±×·ìÈ­ LMS ¾Ë°í¸®Áò °£¼· Á¦°Å±â¹ýÀ» Àû¿ë½ÃÅ°±â ¶§¹®¿¡ ±âÁ¸ ±¸Á¶º¸´Ù ³ªÀº ä³Î ÀûÀÀ ¼º´É°ú ³·Àº MSE(Mean Square Error)À» °¡Áø´Ù. ÀÌ Á¦¾ÈµÈ °ËÃâ±â´Â ¼ö·Å¼Óµµ¸¦ Áõ°¡Çϸ鼭 µ¿½Ã¿¡ Æò±Õ Àڽ ¿¡·¯¸¦ ÁÙÀ̱â À§ÇØ ÃÖ¼ÒÆò±Õ Àڽ ¾Ë°í¸®Áò¿¡¼­ µÎ °³ÀÇ ÀûÀÀÈ­ »ó¼ö¸¦ ÀÌ¿ëÇÑ´Ù. ÀÌ ±¸Á¶´Â ±âÁ¸ ºñ¼±Çü °£¼·Á¦°Å±â¿¡ ºñÇØ °°Àº MSE(Mean Square Error)¿¡ ´ëÇÑ ¹Ýº¹¼ö¿Í Çϵå¿þ¾î º¹Àâµµ¸¦ ÁÙ¿©ÁØ´Ù.
¿µ¹®³»¿ë
(English Abstract)
In this paper, as the mobile communication service is widely used and the demand for wireless repeaters is rapidly increasing because of the easiness of extending service areas. But a wireless repeater has a problem the oscillation due to feedback signal. We proposed a new hybrid interference canceller using the adaptive filter with CMA(Constant Modulus Algorithm)-Grouped LMS(Least Mean Square) algorithm in the adaptive interference canceller. The proposed interference canceller has better channel adaptive performance and a lower MSE(Mean Square Error) than conventional structure because it uses the cancellation method of Grouped LMS algorithm. The proposed detector uses the LMS algorithms with two different step size to reduce mean square error and to obtain fast convergence. This structure reduces the number of iterations for the same MSE performance and hardware complexity compared to conventional nonlinear interference canceller.
Å°¿öµå(Keyword) ÀûÀÀ°£¼·Á¦°Å±â   ¹«¼±Áß°è±â   ±×·ìÈ­ LMS(Least Mean Square)   CMA(Constant Modulus Algorithm)  
ÆÄÀÏ÷ºÎ PDF ´Ù¿î·Îµå