What is the difference between fixed and variable length codes?

The advantage of non-uniform codes over uniform ones is that messages can be transmitted in a more economical way, since often transmitted codewords are shorter, which means that the code sequence can have a shorter length than for uniform calls. But uneven stakes have a serious drawback compared to uniform V codes of uniform codes, the code sequence is always decoded unambiguously due to the fact that the code words have the same length (the code sequence is easily divided into code words). However, not all uneven codes achieve unambiguous decoding of code sequences.

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