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Figure 15 | EURASIP Journal on Advances in Signal Processing

Figure 15

From: A low complexity Hopfield neural network turbo equalizer

Figure 15

HNN-TE BPSK and 4-QAM performance in a long channel at a fixed speed for various amounts of training symbols for channel estimation. Shows the HNN-TE BPSK and 4-QAM performance in systems with CIR length L = 50 at a fixed mobile 20 km/h using 4L, 6L, 8L, and 10L symbols for channel estimation. Blue circle: BPSK HNN-TE - 10L; Blue square: BPSK HNN-TE - 8L; Blue diamond: BPSK HNN-TE - 6L; Blue down triangle: BPSK HNN-TE - 4L; Red circle: 4-QAM HNN-TE - 10L; Red square: 4-QAM HNN-TE - 8L; Red diamond: 4-QAM HNN-TE - 6L; Red down triangle: 4-QAM HNN-TE - 4L; Black dashed: coded AWGN bound.

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