Multiscale KF Algorithm for Strong Fractional Noise Interference Suppression in Discrete-Time UWB Systems | Zendy

Liyun Su | Zendy; Yuli Zhang | Zendy; Yan-Ju Ma | Zendy; Jiaojun Li | Zendy; Fenglan Li | Zendy

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Multiscale KF Algorithm for Strong Fractional Noise Interference Suppression in Discrete-Time UWB Systems

Author(s) -

Liyun Su,

Yuli Zhang,

Yan-Ju Ma,

Jiaojun Li,

Fenglan Li

Publication year - 2011

Publication title -

discrete dynamics in nature and society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.264

H-Index - 39

eISSN - 1607-887X

pISSN - 1026-0226

DOI - 10.1155/2011/356421

Subject(s) - algorithm , interference (communication) , noise (video) , kalman filter , signal (programming language) , computer science , wavelet , time domain , mathematics , channel (broadcasting) , telecommunications , artificial intelligence , image (mathematics) , computer vision , programming language

In order to suppress the interference of the strong fractional noise signal in discrete-time ultrawideband (UWB) systems, this paper presents a new UWB multi-scale Kalman filter (KF) algorithm for the interference suppression. This approach solves the problem of the narrowband interference (NBI) as nonstationary fractional signal in UWB communication, which does not need to estimate any channel parameter. In this paper, the received sampled signal is transformed through multiscale wavelet to obtain a state transition equation and an observation equation based on the stationarity theory of wavelet coefficients in time domain. Then through the Kalman filter method, fractional signal of arbitrary scale is easily figured out. Finally, fractional noise interference is subtracted from the received signal. Performance analysis and computer simulations reveal that this algorithm is effective to reduce the strong fractional noise when the sampling rate is low

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