Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Feedback Interference Cancellation for W-CDMA Repeaters Using the Adaptive Algorithms

W-CDMA용 무선중계기에서의 적응알고리즘을 이용한 궤환 간섭 잡음 제거

  • Moon, Woo-Sik (School of Information and Communication Engineering Soongsil University) ;
  • Kim, Sun-Ho (School of Information and Communication Engineering Soongsil University) ;
  • Im, Sung-Bin (School of Information and Communication Engineering Soongsil University) ;
  • Cho, Jun-Kyung (HUTECH21 Co., Ltd.)
  • 문우식 (숭실대학교 정보통신공학과) ;
  • 김선호 (숭실대학교 정보통신공학과) ;
  • 임성빈 (숭실대학교 정보통신공학과) ;
  • 조준경 ((주)휴텍21)
  • Published : 2007.07.11
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Abstract

As the mobile communication service is widely used, the demand for wireless repeaters is rapidly increasing because of the easiness of extending service areas. But wireless repeaters has a problem that the output of the transmit antenna is partially fed back to the receive antenna, which results in feedback interference. In this paper, we investigate the performance of adaptive variable step-size NLMS-based algorithms for cancelling the interference signals in the W-CDMA system under time-varying multipath channels. The criteria for comparison are tracking capability, convergence speed, and complexity.

Keywords