다중 경로 채널에서의 비동기 DS / CDMA 시스템을 위한 심볼 단위 다단 적응 간섭 제거기

Abstract

We propose a new technique called the symbol-by-symbol based adaptive multistage interference canceller(SAMIC). The SAMIC removes both multiple access interfer-ence(MAI) and intersymbol interference(ISI) at the out-put of the Rake receiver. As a consequence, its complex-ity is independent of the number of fingers of the Rake receiver and the SAMIC can be considerably simpler to implement than the existing techniques. Furthermore, by employing an adaptation algorithm for estimating inter-ference, the SAMIC does not require the knowledge about the other users' signals such as spreading sequences and signal power.