Figure 1From: A 10-state model for an AMC scheme with repetition coding in mobile wireless networksBER versus average SNR per lognormally faded channel γLn of QPSK ( M = 4) using Gray’s code. The system uses N th-order repetition coding and maximum ratio combining in correlated lognormal fading channels. Hermite polynomial order Np = 12; Gaussian standard deviation σ Z = 8 dB; correlation coefficient ρ = 0.2.Back to article page