Parallel Resampling of OFDM Signals for Fluctuating Doppler Shifts in Underwater Acoustic Communication

Table 6

Experimental parameters.

Modulation	QPSK-OFDM
Sampling frequency (kHz)	200
Center frequency (kHz)	45
Frequency band (kHz)	30 to 60
FFT size	1024
FFT length (ms)	34.1
GI length (ms)	4.3
Number of data subcarriers	512
Number of pilot subcarriers	512
Number of OFDM blocks	4
OFDM frame length (ms)	154
Frequency domain oversampling factor	2
FEC (coding rate)	Convolutional coding (1/2)
Transmit data rate (kbps)	3