Subband Adaptive Filtering with 𝑙_𝟏-Norm Constraint for Sparse System Identification

Table 1

Computational complexity.

	NSAF	𝑙1-NSAF	𝑙1-RNSAF
Multiplications	3𝑀+3𝑁𝐿	6𝑀+3𝑁𝐿	7𝑀+3𝑁𝐿
Divisions	1	2	2+𝑀/𝑁

(𝑀: filter length, 𝑁: number of subbands, and 𝐿: length of the analysis filters and synthesis filters).