Erzin, Sašo ; Leonardis, Savo, dr. elektrotehnike, 1931-2016
Prispevek predstavlja realizacijo zelo dolgih (dolžine nekaj tisoč celic) adaptivnih FIR filtrov visokega reda, s katerimi se srečujemo v telekomunikacijskih sistemih pri izločevalniku odmeva (echo ...canceller). Pri iskanju algoritma, ki ob minimalnem številu računskih operacij v časovnem prostoru zagotavlja tudi majhno zakasnitev izhodnega signala (block delay) v frekvenčnem prostoru, je bil za osnovo uporabljen algoritem, ki minimizira kvadrat pogreška. Ugotovljeno je bilo, da imajo najbolj fleksibilno strukturo blokovni adaptivni FIR filtri z izravnavo v frekvenčnem prostoru, ker jih lahko realiziramo z FTT poljubne velikosti, ki jo izberemo glede na želeno velikost blokovne zakasnitve in konvergence.
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