A Closed-Form Approximate Expression for the BEP of BDPSK Signal in Log-Normal SISO FSO Communication System

We develop an average bit error probability (BEP) expression for binary differential phase shift keying (BDPSK) signal in log-normal single-input-single-output laser free-space optical (FSO) communication system by treating the BEP under particular atmospheric turbulence as random variable and changing the integral form. By using this average BEP expression and successive polynomial approximations...