Low density parity check codes are used by modern digital communicational technologies such as 5G for handling errors and noices introduced by communicational channels. The message bits are encoded ...
bit_to_symbol_map = [-3, -1, 1, 3]; % Mapping for 4-PAM (00 -> -3, 01 -> -1, 10 -> +1, 11 -> +3) restricted_symbol = -3; % Symbol restriction for the final stages in ...
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