Performance analysis of underwater vertical wireless optical communication system in the presence of weak turbulence, pointing errors and attenuation losses

Performance Analysis of MIMO-EGC System for the Underwater Vertical Wireless Optical Communication Link

“…In this section, we have performed Monte Carlo simulations and numerical analysis of derived closed-form expressions quantifying the average BER, OP, and ECC of the UVWOC MIMO EGC system. The system parameters that we have considered for this computation are wavelength λ = 530 nm, extinction coefficient of ocean water C(λ = 530 nm) = 0.056 m −1 , A 0 = 1, g = 23.85, 2.65 and 0.95 for weak, moderate and strong pointing error (PE) respectively [15], [26].…”

“…In this paper, we have considered a UVWOC link with transmitter-receiver separation with one, two, three, and four non-identical vertical layers where each layer has a thickness of 30 m. The critical parameters of the multi-layer UVWOC link, such as log amplitude variances and GG distribution parameters in case of weak turbulence (WT) and strong turbulence (ST), respectively, are presented in Table 4. This data has been drawn from studies conducted in the pacific ocean at high latitudes [7], [15]. Figs.…”

“…In the literature [15], channel models for vertical links were derived by the author, taking into consideration the effect of pointing errors, with a specific focus on the weak turbulence regime. Different schemes, such as receive diversity with selection combining and maximum ratio combining, were explored [15].…”

“…In the literature [15], channel models for vertical links were derived by the author, taking into consideration the effect of pointing errors, with a specific focus on the weak turbulence regime. Different schemes, such as receive diversity with selection combining and maximum ratio combining, were explored [15]. Drawing upon the encouraging results of prior research, a novel approach has been adopted in this paper, where MIMO EGC has been employed for vertical links with K vertical layers.…”

“…These multiple non-identical vertical layers (Each vertical layer with different turbulence) are modeled using cascaded log-normal and gamma-gamma turbulence for weak and strong regimes, respectively [8], [9]. The low complexity HTLN distribution is used as an alternative to log-normal distribution to model vertical link turbulence in case of weak regimes [15]. In this paper, we have assumed the link to be vertical and used HTLN distribution and cascaded GG distribution for channel modeling with respect to weak and strong turbulence regimes.…”