Figure 12
From: A low complexity Hopfield neural network turbo equalizer
HNN-TE and CTE BPSK performance in a short channel at a fixed mobile speed for various amounts of training symbols for channel estimation. Shows the HNN-TE and CTE performance in systems with CIR length L = 6 at a fixed mobile 20 km/h using 4L, 6L, 8L, and 10L symbols for channel estimation. Red circle: CTE - 4L pilots; Red square: CTE - 6L pilots; Red diamond: CTE - 8L pilots; Red down triangle: CTE - 10L pilots; Red left triangle: CTE - Perfect CSI; Blue circle: HNN-TE - 4L pilots; Blue square: HNN-TE - 6L pilots; Blue diamond: HNN-TE - 8L pilots; Blue down triangle: HNN-TE - 10L pilots; Blue left triangle: HNN-TE - Perfect CSI; Black dashed: coded AWGN bound.