Digital communication system having a punctured convolutional co

Details Digital communication system having a punctured convolutional co Digital communication system having a punctured convolutional co

1995-01-23

1997-09-16

Baker, Stephen M.

Excavating

H03M 1312

Patent

active

056688202

ABSTRACT:
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
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=.gamma.k. The puncturing circuit punctures the convolutional coded output according to a deleting pattern chosen to have a bit length of L=p.gamma.n, where p.gtoreq.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.

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Y. Yasuda, Kanshiro Kashiki, and Yasuo Hirata, "High-Rate Punctured Convolutional Codes for Soft Decision Viterbi Decoding," IEEE Trans. Commun., vol. COM-32, pp. 315-319, Mar. 1984.
Hagenauer, J., "Rate-Compatible Punctured Convolutional Codes (RCPC Codes) and their Applications", IEEE Transactions on Communications, vol. 36, No. 4, pp. 389-400. Apr. 1988.

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