Bit error probability of the M‐QAM scheme subject to multilevel double gated additive white Gaussian noise and η‐μ, κ‐μ, or α‐μ fading - Silva, Hugerles S.; Queiroz, Wamberto J. L.; Almeida, Danilo B. T.; Madeiro, Francisco; Alencar, Marcelo S. (Transactions on emerging telecommunications technologies, 2019)