Table 1. The comparison results with other methods on the performance indicators.

Method	MAE	MSE	RMSE	SNR
RNN	0.2664	0.1543	0.3928	1.218
LSTM	0.2159	0.1247	0.3531	1.046
GRU	0.2634	0.1138	0.3373	0.945
Encoder-decoder	0.3167	0.1351	0.3676	1.348
Ours	0.1563	0.0723	0.2689	0.612