What is convolution coding in communication?

Convolutional coding is an error-correcting technique used in digital communication systems to improve the reliability of data transmission over noisy channels. It involves encoding data streams into longer sequences by convolving the input data with a series of predefined polynomial functions, which generates redundant bits that help detect and correct errors at the receiver. The encoded data is typically represented as a sequence of bits, and the decoding process often employs algorithms like the Viterbi algorithm to retrieve the original message while minimizing errors. This method is particularly effective in scenariOS where maintaining data integrity is critical, such as in satellite communications and mobile networks.