Results on the application of simulated annealing algorithm for the design of digital filters with powers-of-two coefficients

Results on the application of the simulated annealing (SA) algorithm to the problem of finding the coefficients of a digital filter with very coarse coefficients values (namely, power-of-two) are presented. For a minimax criterion in the frequency response, the algorithm was found particularly useful for designing a cascade-form FIR (finite impulse response) filter whose performance is known to be superior to that of direct-form filters. Because the SA algorithm is a global optimization method, all stages are designed simultaneously, thus avoiding the classical iterative procedure. The final result is better performance at a higher computational cost