Design of Finite Word Length Linear-Phase FIR Filters in the Logarithmic Number System Domain

Figure 4

Number of visited nodes (solved subproblems) for specification 6: (a) 𝑁=20, 𝑄(3,𝑦), (b) 𝑁=20, 𝑄(4,𝑦), (c) 𝑁=34, 𝑄(3,𝑦), and (d) 𝑁=34, 𝑄(4,𝑦).

(a)

(b)

(c)

(d)