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Digital filters based on recursive Walsh-Hadamard transformation

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2 Author(s)
Peceli, G. ; Dept. of Meas. & Instrum. Eng., Tech. Univ. of Budapest, Hungary ; Feher, B.

The applicability of the recursive Walsh-Hadamard transformation to FIR and IIR (finite- and infinite-impulse-response) filtering is investigated. It is shown that using a common structure for recursive transforms recently introduced by G. Peceli (1986), the usual frequency-domain FIR filtering problem can be easily converted into a Walsh sequency-domain filtering problem. It is also shown that a simple modification of this structure results in a possible alternative for IIR filter implementations

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Circuits and Systems, IEEE Transactions on  (Volume:37 ,  Issue: 1 )