codewords is also a code word, and they are applied to the source bits in blocks, hence the name linear block codes. There are block codes that are not linear, but it is difficult to prove that a code is a good one without this property.

Linear block codes are summarized by their symbol alphabets (e.g., binary or ternary) and parameters (n,m,d_min) where

# n is the length of the codeword, in symbols,
# m is the number of source symbols that will be used for encoding at once,
# d_min is the minimum

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