Table 1 Parameters of the OFDM signal
From: R&D of a low-complexity OFDM acoustic communication payload for Micro-AUV in confined space
Parameter | Value |
|---|---|
Bandwidth | 5 kHz |
Central frequency | 15.5 kHz |
Number of FFT | 4096 |
Sampling frequency | 75000 Hz |
Subcarrier spacing | 18.3 Hz |
Number of subcarrier | 268 |
Number of pilot | 134 |
Mapping scheme | DQPSK |
Duration of OFDM symbol | 54.6 ms |
Duration of CP | 13.65 ms |
Duration of LFM | 22.67 ms |
Duration of guard time | 200 ms |
Raw communication rate | 3.93 kbps |
Effective communication rate | 1.96 kbps |