한국정보통신설비학회:학술대회논문집
- 한국정보통신설비학회 2007년도 학술대회
- /
- Pages.440-444
- /
- 2007
WCDMA 용 무 선중계기에서 상관도를 이용한 적응적 궤환 간섭 제거
Adaptive Feedback Interference Cancellation Using Correlations for WCDMA Wireless Repeaters
- Moon, Woo-Sik (School of Electronic Engineering, Soongsil University) ;
- Lim, Sung-Bin (School of Electronic Engineering, Soongsil University) ;
- Lee, Jae-Jin (School of Electronic Engineering, Soongsil University) ;
- Cho, Jun-Kyung (HUTECH21 co, Ltd.)
- 발행 : 2007.08.24
초록
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 a wireless repeater 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 propose a new varable step-size LMS algorithm, which utilizes correlation between reference and error signals to adjust the step sizes, for cancelling the feedback interference signals in the WCDMA repeater under time-varying multi-path channels. The proposed algorithm was investigated through computer simualation by being applied to the time-varying channels. The simulation results demonstrated that the proposed one is superior to the conventional ones in terms of cancelation perormance.