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Table 1 Simulation parameters

From: Transmit power reduction through subcarrier selection for MC-CDMA-based indoor optical wireless communications with IM/DD

Parameter Specification
Transmission bit rate 10 Mbps
Modulation QPSK
Number of subcarriers 64
Spreading sequences Walsh-Hadamard
Channel model As in (2) [8]
Equalization Single-tap frequency domain
  pre- and post-equalization
Digital-to-analog converter (DAC) Rectangular pulse
H(0) (DC channel gain) −60 dB [8]
N0 (noise variance) 10 −23 A2/Hz [8]
D (rms delay spread) 10 ns [8]
R (photodetector responsivity) 1 A/W [8]
Transmit power calculation As per multi-carrier optical
  wireless communications