[MH2] Underwater Transmission

2:45 PM - 3:00 PM JST(5:45 AM - 6:00 AM UTC)

[MH2-4] Pulse Position Modulation based Hadamard-Coded Multiplexing for Underwater Optical Wireless Communications with Diffused Light Source

Si Han Ong¹, ○Ekkaphol Khansalee¹, Masanori Hanawa¹ (1. University of Yamanashi (Japan))

Keywords:

Free-space optical transmission,Multiplexing and demultiplexing techniques including OTDM,OFDM,OCDM and SDM,Digital signal processing,advanced modulation,coding and multiplexing,Advanced modulation and demodulation for optical communications

A real-valued multiplexing method utilizing Hadamard-Coded Multiplexing with Pulse Position Modulation PPM-HCM for diffused light source was investigated, achieving detection range of 20 mm at -31 dBm in a 10 m Free-space Optical Channel.