Note that, for the special case N = 0, the relations (63)-(70) (the IIR filter
) can be used for the state estimation in absence or incompleteness of the statistical information about the initial conditions of (1).
For speed of processing and response, we have adopted a first-order digital high-pass IIR filter
with a cut-off of 0.15 Hz, and the transfer function is as follows:
The following processing DSP IP cores were chosen for inclusion into the library: FIR filter, IIR filter
, FFT/IFFT modules, and a parameterized and highly scalable DDC core.
The output signal of the IIR filter
y(n) is computed as
Allpass biquad IIR filter
is used to compensate nonlinear phase response that comes from the tropical outdoor channel and the antenna.
On the optimal design of IIR filter
with its state-space realization, Indian J.
However, the fact that FIR filters order is considerably higher than that of an equivalent IIR filter
, and that FIR filters computational efficiency is considerably poorer, has resulted in searching for new methods, with IIR filters
in the sharpening structure [2, 3].
The temporal filter component is a hybrid IIR filter
(both Infinite Impulse Response filter and temporal morphological midpoint).
In Figure 6 the exit temperature signals of the adjusted (A) and unadjusted (SA) model are shown after applying the IIR filter
on all the entrance signals of the model.
In one type of dynamic neurons, the dynamics are applied by introducing an IIR filter
into the neuron structure.
According to the block diagram of Figure 1, the output of the plant is d(i) whereas the output of the IIR filter
Critical path solver algorithm Filter order IIR filter
FIR filter FPGA based GPP based FPGA based GPP based (ns) (ms) (ns) (ms) 2 4.60 13.8 9.06 12.83 4 15.71 15.78 16.31 14.46 6 29.98 19.18 19.23 15.47 8 31.62 21.90 29.71 16.42 10 39.81 26.27 36.53 18.61 12 46.72 31.42 43.28 23.52 Shortest path solver algorithm Filter order IIR filter
FIR filter FPGA based GPP based FPGA based GPP based (ns) (ms) (ns) (ms) 2 2.78 3.05 3.05 12.80 4 3.68 13.91 13.91 13.19 6 3.98 15.42 15.42 17.31 8 4.52 25.23 25.23 32.94 10 5.36 42.93 42.93 45.34 12 6.71 55.34 55.34 51.61 TABLE 5: Comparison results of different adder/multiplier combinations for digital filters.