Figure 16
From: A low complexity Hopfield neural network turbo equalizer
HNN-TE BPSK and 4-QAM performance in a long channel at a fixed speed for various numbers iterations. Shows the HNN-TE BPSK and 4-QAM performance in systems with CIR length L = 50 at a fixed mobile 20 km/h using Z = 5, Z = 10, Z = 20, and Z = 50 iterations.