The optimization procedure is as follows. First, a reference system
is designed using a floating-point or a fixed-point format with a
long word-length to verify the operation of the system when there
are either negligible or no overtlows and signal quantization effects.
Second, a fixed-point performlance measure, such as the signal-toquantization-
noise ratio (SQNF!) block, is added to quantify the finite
word-length effects when the word-length for the implementation of
the system changes