In telecommunication, a convolutional code is a type of error-correcting code in which
- each m-bit information symbol (each m-bit string) to be encoded is transformed into an n-bit symbol, where m/n is the code rate (n ≥ m) and
- the transformation is a function of the last k information symbols, where k is the constraint length of the code.
Read more about Convolutional Code: Where Convolutional Codes Are Used, Convolutional Encoding, Recursive and Non-recursive Codes, Impulse Response, Transfer Function, and Constraint Length, Trellis Diagram, Free Distance and Error Distribution, Decoding Convolutional Codes, Popular Convolutional Codes, Punctured Convolutional Codes, Turbo Codes: Replacing Convolutional Codes, MATLAB Implementation
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“Motion or change, and identity or rest, are the first and second secrets of nature: Motion and Rest. The whole code of her laws may be written on the thumbnail, or the signet of a ring.”
—Ralph Waldo Emerson (1803–1882)