A DIGITAL COMMUNICATION SYSTEM HAVING A PUNCTURED A DIGITAL COMMUNICATION SYSTEM HAVING A PUNCTURED CONVOLUTIONAL CODING SYSTEM AND METHOD CONVOLUTIONAL CODING SYSTEM AND METHOD

摘要

A digital communication system having a punctured convolutional coding system and method. The digital communication system includes a coder for coding a digital input to be transmitted from a transmitter and a decoder for decoding the coded input received at the receiver. The coder includes a convolutional coding circuit of rate k/n for outputting a convolutional coded output and a puncturing circuit for puncturing the convolutionally coded output to achieve a punctured code rate of z/q, where z = ηk. The puncturing circuit punctures the convolutional coded output according to a deleting pattern chosen to have a bit length of L = pηn, where p » 2. The puncturing circuit outputs a punctured output at punctured code rate of z/q and the punctured output is transmitted to the receiver. The receiver decodes the transmitted punctured output and outputs a decoded output.