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Table 3 Common notations used throughout the article

From: A unified approach to sparse signal processing

n

Length of original vector

k

Order of sparsity

m

Length of observed vector

x

Original vector

s

Corresponding sparse vector

y

Observed vector

ν

Noise vector

A

Transformation matrix relating s to y

∥ u n × 1 ∥ ℓ p

∑ i = 1 n | u i | p 1 p