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Table 2 Parameter of OFDM UWC system under different polar code lengths \(N\)

From: Application research of polar coded OFDM underwater acoustic communications

\(N\)

128

256

512

1024

\(\Delta f \, (Hz)\)

46.88

23.44

11.72

5.86

\(A\)

1024

2048

4096

8192

\(R_{D} (kb/s)\)

1.6

3.2

6.4

12.8

\(T_{cp} (ms)\)

5.34

10.67

21.34

42.67

\(T \, (ms)\)

21.34

42.67

85.3

170.7