Table 1 1024-FFT/IFFT parameters in 20 MHz bandwidth
From: Spectral broadening effects of high-power amplifiers in MIMO–OFDM relaying channels
Parameter | Value |
|---|---|
Channel bandwidth | 20 MHz |
Modulation | 4-QAM |
Number of DC subcarriers | 1 |
Number of guard subcarriers, left | 80 |
Number of guard subcarriers, right | 79 |
Number of data subcarriers | 864 |
Subcarrier frequency spacing, Δf | 19.53125 KHz (= 20 MHz/1024) |
IFFT/FFT period, TFFT | 51.2 μs |
Cyclic prefix duration, TCP | 6.4 μs (TFFT/8) |
Total OFDM symbol duration, TS | 57.6 μs |