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Table 2 Simulation parameters

From: Variable-step-size based sparse adaptive filtering algorithm for channel estimation in broadband wireless communication systems

Parameters Values
Transmission bandwidth W =40 MHz
Delay spread τ =0.8 μs
Channel length N =64
Number of nonzero coefficients K =2 and 6
Distribution of nonzero coefficient random Gaussian CN 0 , 1
Threshold parameter for VSS-NLMS C= 6.0 × 10 6 , for SNR = 5 dB 3.0 × 10 6 , for SNR = 10 dB 2.0 × 10 6 , for SNR = 20 dB
Received SNR E s /N0 0 ~ 40 dB
Step size μ = 0.5 and μmax = 2
Regularization parameter ρ=0.0015 σ n 2
Modulation schemes 8 PSK, 16 PSK, 16 QAM, and 64 QAM