Page 544 - DSP Integrated Circuits
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Problems 529
Figure PI 1.19 Linear-phase IFIR filter
Figure PH.20 Lattice WDF with the branches implemented by Richards' structures
11.21 Implement the first-order section with scattered look-ahead pipelining that
was discussed in Example 6.13 using distributed arithmetic.
11.22 Show that a butterfly can be implemented using only three real
multiplications.
11.23 Suggest a multi-input, multi-output PE for a butterfly of type (1)
decimation-in-time and (2) decimation-in-frequency. Use both
serial/parallell multipliers and distributed arithmetic.
11.24 Determine the difference in ROM size if the MDCT is not used. Which of the
other DCTs can be used?
