Title :
On the filtering properties of evolved gate arrays
Author :
Miller, Julian F.
Author_Institution :
Sch. of Comput, Napier Univ., Edinburgh, UK
Abstract :
A small gate array is evolved extrinsically to carry out a low pass filtering task defined over fifteen different frequencies. The circuit is evolved by assessing its response to digitised sine waves. Two different fitness functions are contrasted. One is based on computing the sum of the absolute differences between the actual response and that desired, the other is defined by examining characteristics of the discrete Fourier transform of the output. The gate arrays possess some linear properties, which means that they are capable of filtering composite signals which have not been encountered in training. This includes signals with noise added and with frequencies which are not in the training set
Keywords :
logic arrays; logic design; noise; absolute differences; digitised sine waves; discrete Fourier transform; evolved gate arrays; filtering properties; linear properties; low pass filtering; Algorithm design and analysis; Circuits; Clocks; Electronic switching systems; Evolutionary computation; Filtering; Finite impulse response filter; Frequency; Hardware; IIR filters;
Conference_Titel :
Evolvable Hardware, 1999. Proceedings of the First NASA/DoD Workshop on
Conference_Location :
Pasadena, CA
Print_ISBN :
0-7695-0256-3
DOI :
10.1109/EH.1999.785429
