Ref. [8] Present method

${\epsilon }_1={10}^{-j}$

N = 128 M = 2

N = 256 M = 8

N = 512 M = 32

N = 1024 M = 128

N = 128 M = 2

N = 256

M = 8

N = 512 M = 32

N = 1024 M = 128

j = 1

3.22E−02

2.68E−02

1.71E−02

1.06E−02

2.33E−04

2.02E−05

4.01E−07

3.21E−09

j = 2

3.84E−02

2.89E−02

1.84E−02

1.07E−02

2.45E−04

2.31E−05

4.21E−07

3.33E−09

j = 3

4.00E−02

2.98E−02

1.90E−02

1.09E−02

3.05E−04

2.76E−05

4.83E−07

3.89E−09

j = 4

4.24E−02

3.05E−02

1.93E−02

1.11E−02

3.78E−04

3.03E−05

5.21E−07

4.15E−09

j = 5

4.42E−02

3.25E−02

2.01E−02

1.14E−02

4.02E−04

3.28E−05

5.38E−07

4.27E−09

j = 8

4.42E−02

3.25E−02

2.01E−02

1.15E−02

4.28E−04

3.56E−05

5.92E−07

4.83E−09

j = 10

4.42E−02

3.25E−02

2.01E−02

1.15E−02

4.28E−04

3.56E−05

5.92E−07

4.83E−09

j = 12

4.42E−02

3.25E−02

2.01E−02

1.15E−02

4.28E−04

3.56E−05

5.92E−07

4.83E−09