首页|Experimental demonstration of underwater wireless optical OFDM communication system with a single SPAD receiver
Experimental demonstration of underwater wireless optical OFDM communication system with a single SPAD receiver
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NSTL
Elsevier
? 2021 Elsevier B.V.Generally, only binary modulation formats, such as on–off keying (OOK) and pulse position modulation (PPM), can be detected by a single photon avalanche diode (SPAD). In this paper, we propose to use a single SPAD receiver to achieve underwater wireless optical communication (UWOC) with high-order modulation formats. The feasibility is theoretically analyzed, and firstly demonstrated in a proof-of-concept orthogonal frequency division multiplexing (OFDM) experiment. The proposed OFDM system using quadrature phase shift keying (QPSK) and 16 quadrature amplitude modulation (16-QAM) can work with less than 68 and 390 photons per symbol, and with receiver sensitivities below the forward error correction (FEC) limit as high as ?84.5 dBm and ?77.8 dBm, respectively. These extraordinarily sensitive results indicate that the proposed scheme is a promising solution to long-distance UWOC systems or internet of underwater things (IoUT).
Orthogonal frequency division multiplexingSingle photon avalanche diodeUnderwater wireless optical communication
Lyu W.、Li X.、Zhang Y.、Zhang Z.、Xu J.、Guan X.
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Optical Communications Laboratory Ocean College Zhejiang University
Centre d'Optique Photonique et Laser Universite Laval Quebec City
NSTL
Elsevier
