표 1. | Table 1. OFDM 신호 파라미터 | Parameters of OFDM.
Parameter
OFDM setting
FFT size (
N
)
4,000
Number of carriers (
M
)
1,334
Sub-carrier spacing (
Δf
)
15 kHz
Bandwidth
20 MHz
Modulation
QPSK
Sequence length
420 symbols
Symbol duration (T
s
)
1/15 kHz=66.67 us