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Table 1 Complexity analysis

From: Efficient Bayesian compressed sensing-based channel estimation techniques for massive MIMO-OFDM systems

Estimators

Computation complexity

R-LS

O(L 2)

BCS

O(K L 2)

MTBCS

O(K L 3)

OMP

O(L log(K))

BiAMP

O(L K+K)