Table 1: Simulation parameters.

ParameterValue

The number of subchannels256 or 1,024 or 4,096
Constellation mapping256 QAM
Sampling period [μs]0.1458 (=7/48)
Pilot spacing in frequency domain (subchannels)2 for 256 subchannels 
4 for 1,024/4,096 subchannels
Pilot spacing in time domain (subchannels)8 (for 256/1,024/4,096 subchannels)
CSI interpolation method in frequency domainCubic spline interpolation method
CSI interpolation method in time domainLinear interpolation method
Equalization methodZero forcing method
Brazil-D Channel path delay [μs][0.15, 0.63, 2.22, 3.05, 5.86, 5.93]
Brazil-D Channel path power [dB][−0.1, −3.8, −2.6, −1.3, 0.0, −2.8]
Brazil-D fading modelStatic