A Computationally Efficient Iterative Algorithm for Estimating the Parameter of Chirp Signal Model

Table 1

Comparison of the computational cost.

Operation	PCPF	ICPF	Initial	Iterative
Multiplications	𝐶1	𝐶2	𝐶1	𝐶3
Additions	𝐶1	𝐶2	𝐶1	𝐶3
Maximization	1-D	1-D	1-D	0

𝐶₁: O(𝑁log₂𝑁).
𝐶₂: O(𝑀𝑁log₂𝑁).
𝐶₃: O(𝑁).