Electronic device and operation method thereof

An electronic device comprising:

• a log likelihood ratio (LLR) scaling factor selector configured to receive communication environment information and select a first LLR scaling factor corresponding to the communication environment information;
• a symbol detector configured to obtain an output LLR distribution, based on input data and the first LLR scaling factor,
• wherein the LLR scaling factor selector receives training environment information, obtains a measurement LLR distribution based on the training environment information, obtains an inter-distribution divergence value based on a reference LLR distribution and the measurement LLR distribution, and converts the inter-distribution divergence value into a probability value to obtain an LLR scaling factor distribution;
• and
• a decoder configured to obtain decoding data by decoding the output LLR distribution.

A non-transitory computer readable storage medium storing instructions configured to cause a processor, when executing the instructions, to perform log likelihood ratio (LLR) scaling factor distribution learning, the LLR scaling factor distribution learning comprising:

• receiving training environment information;
• obtaining a measurement LLR distribution, based on the training environment information;
• obtaining an inter-distribution divergence value, based on a reference LLR distribution and the measurement LLR distribution;
• and
• obtaining an LLR scaling factor distribution by converting the inter-distribution divergence value into a probability value;
• receiving communication environment information;
• selecting a first LLR scaling factor corresponding to the communication environment information;
• obtaining an output LLR distribution, based on input data and the first LLR scaling factor;
• and
• obtaining decoding data by decoding the output LLR distribution.