Fast communication: An improved orthogonal digital filter structure

Authors:
Gang Li;Chaogeng Huang;Jingyu Hua;Chunru Wan
Affiliations:
College of Information Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang, PR China;College of Information Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang, PR China;College of Information Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang, PR China;School of EEE, Nanyang Technological University, Republic of Singapore
Venue:
Signal Processing
Year:
2010

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Abstract

A novel structure is derived for digital filter implementation. This structure is actually an improved version of an existing one in terms of implementation efficiency and reducing finite word length (FWL) effects. Expression of roundoff noise gain is obtained for the proposed structure. Design examples are given to demonstrate the performance of this structure and to compare it with the existing one and the classical minimum roundoff state-space realizations. Numerical examples show that the proposed structure outperforms the others in terms of minimizing roundoff noise as well as implementation efficiency.