  Recently, a generalization of the double-Rayleigh with line-of-sight channel
fading model taking into account shadowing of the line-of-sight component has
been proposed. In this research, a closed-form analysis of the average bit
error rate for MPSK/MQAM modulations is performed. The derived solution is
accompanied by proposed numerically efficient approximation and all possible
asymptotic expressions that correspond to extreme channel parameters. Lastly, a
numerical simulation was performed that demonstrated the correctness of the
derived results.
