An Improved Data-Driven Decision Feedback Receiver via Deep Unfolding

Table 1

The hyper-parameters in the improved-DFR.

Hyper-parameter	Value or setting
SNR range	dB
Number of input symbols
Number of previous feedback symbols
Number of posterior feedback symbols
Model scale
Activation function in hidden layers	Sigmoid:
Activation function in output layer	Softmax:
Optimizer	Adam
Initial learning rate
Number of frames
Number of training episodes
Batch size (frame size )
Iteration times