Table 1 The chief parameters of the experiment

From: 5G wavelength-division-multiplexing-based bidirectional optical wireless communication system with signal remodulation employing cascaded reflective semiconductor optical amplifiers

Chief Parameter

16-QAM-OFDM

Signal Format

Fibre Collimator

Optical Dish Antenna

Value

9.1 Gbit/s

•128 subcarriers

 120 data subcarriers 8

 pilot subcarriers

•512 FFT size

•16 CP samples

•10 G samples per second

Downlink

•9.1-Gbit/s/28-GHz Uplink

•9.1-Gbit/s/24-GHz

•0.06° divergence angle

•1050-1620 nm

•90 cm diameter

•high reflectivity ( >99%) mirrors

Chief Parameter

Doublet Lens

PD

LNA

RSOA1/RSOA2

Value

•concave lens + convex lens

•50.8 nm diameter

•150 mm focal length

Downlink/Uplink

•30 GHz bandwidth

Downlink/Uplink

•2–30 GHz frequencies

•2.4 dB noise figure

•3.6 GHz bandwidth

•−22 ～ −10 dBm seeding power Range

•RSOA1: 60 mA bias current

•−18 dBm seeding power

•RSOA2: 100 mA bias current −12 dBm seeding power

  1. The chief parameters of the experiment such as 16-QAM-OFDM (16-QAM-OFDM, 16-quadrature amplitude modulation-orthogonal frequency-division multiplexing), signal format, fiber collimator, optical dish antenna, doublet lens, PD (PD, photodiode), LNA (LNA, low noise amplifier), and RSOA1/RSOA2 (RSOA, reflective semiconductor optical amplifier).
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