広帯域CDMAシステムにおける複素マルチレートフィルタバンクを用いた狭帯域干渉除去

抄録

This paper proposes a new narrow band interference canceler for a wide-band CDMA system which shares a frequency band with a narrow-band TDMA system. The proposed canceler, which is based on the complex multi-rate filter bank technique, can not only eliminate known narrow-band interference, but also estimate the number and the frequency of unknown interference. The proposed canceler performs as an adaptive notched filter after the identification of the positions and the number of the narrow band interference based on a tree search algorithm. Computer simulation results show the proposed scheme can estimate and eliminate the interference effectively.