Table 4. Average computation time (in seconds, measured for 100 simulated networks) required by the OLS and ANN methods for the estimation of GC at different values of K ratio (SNR = 103).

Method	OLS	ANN
K = 20	9.1·103	142.18
K = 10	4.5·103	107.28
K = 3	1.3·103	67.6
K = 1	−	60.38