Work

Sliding Conjugate Symmetric Sequency-Ordered Complex Hadamard Transform: Fast Algorithm and Applications

Year: 2012

Type: article

Abstract: This paper presents a fast algorithm for the computation of sliding conjugate symmetric sequency-ordered complex Hadamard transform (CS-SCHT). The algorithm calculates the values of windowi+N/4 from those of windowi, one length-N/4 Walsh Hadamard transform (WHT) and one length-N/4 Modified WHT (MWHT). The proposed algorithm requires O(N) arithmetic operations, which is more efficient than the block-based algorithms of various transforms and the sliding FFT algorithm, but less efficient than the sliding WHT algorithms. Compared to the recently proposed sliding inverse SCHT (ISCHT) algorithm, the proposed algorithm is more efficient for real input but less efficient for complex input. The applications of the sliding CS-SCHT in transform domain adaptive filtering (TDAF) to complex signal channel equalization and real speech signal acoustic echo cancellation are also provided.

Source: IEEE Transactions on Circuits and Systems I Regular Papers

DOI: 10.1109/tcsi.2011.2173386

Authors: Jiasong Wu, Lu Wang, Guanyu Yang, Lotfi Senhadji, Limin Luo, Huazhong Shu

Institutions: Southeast University, Inserm, Laboratoire Traitement du Signal et de l'Image, Université Rennes 1, Université de Rennes

Language: English

Topic: Digital Filter Design and Implementation

Subfield: Signal Processing

Field: Computer Science

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2151982919

FWCI: 4.084

Cites: 56

Cited by: 23

Related to: 10