Implementation of low-complexity FIR filters using difference methods
Henrik Ohlsson, Oscar Gustafsson, Lars Wanhammar · System-on-Chip Conference · 2004
In this paper we discuss implementation of low-complexity FIR filters using difference methods. By realizing the differences between coefficients and from them the actual coefficients, the complexity of the filter implementations can be reduced. Here two different methods are proposed for selecting the differences. Both methods can be implemented with low execution times, making it possible to include them in the search for quantized filter coefficients.