Jose Maria Acha - Academia.edu (original) (raw)
Uploads
Papers by Jose Maria Acha
Signal Processing, 2012
A new algorithm for efficient linear convolution of real signals using discrete Fourier transform... more A new algorithm for efficient linear convolution of real signals using discrete Fourier transforms is presented. The traditional method uses a considerable amount of preprocessing and post-processing of both the input and output signals. We show that plenty of this processing can be shifted to the impulse response of the system, whose operations can be precomputed and therefore have no computational cost. This method results in computational savings, reducing the total arithmetic operations and particularly the execution time with regard to previously proposed techniques.
International Journal of Circuit Theory and Applications, 1990
The synthesis of real digital filters based on the lossless bounded real (LBR) two-pair extractio... more The synthesis of real digital filters based on the lossless bounded real (LBR) two-pair extraction procedure is extended to the complex domain. The only component then required is a first-order reciprocal lossless bounded complex (LBC) two-pair. This two-pair permits the synthesis of any bounded complex (BC) or lossless bounded complex (LBC) digital transfer function. Lastly, a unitary implementation in terms of Givens (planar) rotation modules is given for the proposed two-pair.
Signal Processing, 2012
A new algorithm for efficient linear convolution of real signals using discrete Fourier transform... more A new algorithm for efficient linear convolution of real signals using discrete Fourier transforms is presented. The traditional method uses a considerable amount of preprocessing and post-processing of both the input and output signals. We show that plenty of this processing can be shifted to the impulse response of the system, whose operations can be precomputed and therefore have no computational cost. This method results in computational savings, reducing the total arithmetic operations and particularly the execution time with regard to previously proposed techniques.
International Journal of Circuit Theory and Applications, 1990
The synthesis of real digital filters based on the lossless bounded real (LBR) two-pair extractio... more The synthesis of real digital filters based on the lossless bounded real (LBR) two-pair extraction procedure is extended to the complex domain. The only component then required is a first-order reciprocal lossless bounded complex (LBC) two-pair. This two-pair permits the synthesis of any bounded complex (BC) or lossless bounded complex (LBC) digital transfer function. Lastly, a unitary implementation in terms of Givens (planar) rotation modules is given for the proposed two-pair.