A Scheme to Decrease the Tapsnumber for Adaptive Filter in an Interference Cancellation Repeater for Mobile Communication Systems
The feedback interference that comes into receiving antenna from the transmitting antenna has a bad effect on the normal work of the radio repeater. Whats worse, serious feedback interference will incur feedback oscillation. The introduction of Adaptive Interference Cancellation (AIC) solves this problem effectively. When AIC is employed, the feedback time that feedback interference transmits between antennas is long, therefore, a large number of taps of the Adaptive Filter (AF) are needed to cancel feedback interference, this results in highcomplex AIC design. Based on the analysis of the LMS adaptive algorithm and the correlation property of VVCDMA signal, this paper proposes to decrease the number of taps through regulating the reference signal of AIC. The validity of the proposed scheme is confirmed by computer simulation that shows two schemes1 performance on interference cancellation under the different taps number of AF.
radio repeater interference cancellation adaptive filter filter taps
Jun Sui Jiangnan Yuan Xiaofang Wu Biyu Tang
School of Information Science and Technology Xiamen University Xiamen, China
国际会议
上海
英文
203-207
2010-06-22（万方平台首次上网日期，不代表论文的发表时间）