Performance analysis of M-ary pulse position modulation in strong oceanic turbulence

Gökçe M. C., Baykal Y., Ata Y.

OPTICS COMMUNICATIONS, cilt.427, ss.573-577, 2018 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 427
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1016/j.optcom.2018.07.037
  • Dergi Adı: OPTICS COMMUNICATIONS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.573-577
  • Anahtar Kelimeler: Optical wireless communication, Strong oceanic turbulence, M-ary pulse position modulation, Bit error rate, UNDERWATER, COMMUNICATION, BEAM
  • TED Üniversitesi Adresli: Hayır

Özet

In this paper, we consider an underwater wireless optical communication (UWOC) system which consists of an M-ary pulse position modulated (PPM) Gaussian optical beam at the transmitter and an avalanche photodiode (APD) at the receiver. In strong oceanic turbulence, we aimed at investigating the system performance in terms of bit error rate (BER) by the help of gamma-gamma channel model. For this purpose, the average power and the aperture averaged scintillation at the finite sized detector are derived by using the extended Huygens-Fresnel principle and the asymptotic Rytov theory, respectively. BER variations are examined versus the average APD gain, modulation order, bit rate as well as the oceanic turbulence parameters, i.e., the rate of dissipation of kinetic energy per unit mass of fluid, the rate of dissipation of mean-squared temperature and the ratio of temperature to salinity contributions to the refractive index spectrum.