一种新的用于UWBRAKE接收机的自适应算法快速横向滤波算法.PDF

10 Vol. 33 No. 10 2005 10 ACTA ELECTRONICA SINICA Oct. 2005 UWB RAKE : 尹 勇, 俞能海, 董伟杰 ( , 230027) : ( FTF) ( UWB) . , FTF . FTF , . : FTF RLS , FTF , RLS . : ; RAKE ; : TN915 : A : ( 2005) A Novel Adaptive Algorithm Using in UWB RAKE Receiver: Fast Transversal Filter Algorithm YIN Yon , YU Nen hai, DONG Weijie (Dep artment of Electronic Engineering and Inf ormation Science, MOEMicrosof t Key Laboratory of Multimedia Comp uting and Communication, University of Science and echnology of China,Hef ei, Anhui 230027, China) Abstract : A novel idea of usin Fast Transversal Filter ( FTF) adaptive al orithm in Ultra WideBand ( UWB) RAKE receiver is proposed for the first time. By usin for ettin factor dia onal matrix ,we derive the recursion formula of FTF al orithm with for ettin factor lambda. The receiver with FTF adaptive filters can track the amplitude of received si nal to form a realtime amplitude estima tion.The simulation results show that FTF al orithm has a better performance than RLS al orithm in conver ence speed, bit error rate and computational complexity, and the special point is that the conver ence speed is insensitive to the relativity of the data in FTF al orithm. Key words: ultra wideband; RAKE receiver; fast transversal filter RAKE . , 1