Image Processing Reference
In-Depth Information
The very low sensitivity of the variable complex LS1 filter section ensures the general
efficiency of the adaptation and a high tuning accuracy, even with severely quantized
multiplier coefficients.
This approach can easily be extended to the adaptive complex filter bank synthesis in
parallel complex signal processing.
In (Nikolova et al, 2002) a narrowband ACFB is designed for the detection of multiple
complex sinusoids. The filter bank, composed of three variable complex filter sections, is
aimed at detecting multiple complex signals (Fig. 9).
x R ( n )
e R ( n )
e I ( n )
x I ( n )
cos
z -1
y R 1 ( n )
sin
sin
y I 1 ( n )
z -1
cos
cos
z -1
y R 2 ( n )
sin
sin
y I 2 ( n )
z -1
cos
cos
z -1
y R 3 ( n )
sin
sin
y I 3 ( n )
z -1
cos
Adaptive
Algoritm
Fig. 9. Block-diagram of an adaptive complex filter bank system
Search WWH ::




Custom Search