Excavating
Patent
1988-07-25
1991-07-02
Baker, Stephen M.
Excavating
H03M 1312
Patent
active
050293311
ABSTRACT:
A method and apparatus for editing a high-convolutional code for transmisison and its reconversion at a receiver using code puncturing n-output bit streams of a convolutional encoder. The device includes parallel switched data rearrangers at the transmitter provided with control switching circuits which evenly distribute bit streams to the transmission channels. At the receiver, a de-puncturer processes all transmission channels in parallel, downstream of which dummy bits are inserted by a multiplexer and a convolutional decoder subsequently decodes the received data.
REFERENCES:
patent: 4462101 (1984-07-01), Yasuda et al.
patent: 4805174 (1989-02-01), Kubota et al.
Yasuda et al., Dev't of Variable-Rate Viterbi Decoder & Its Perf. Characteristics (pp. XII/24-31), "Conf. Proc. 6th Inter. Conf. Satellite Com.", Phoenix, Ariz., Sept., 1983.
Forney, Jr., "The Viterbi Algorithm", Proc. of IEEE, Mar., 1973.
Cain et al., "Punctured Convolutional Codes of Rate (n-1)
& Simp. Max. Likelihood Decoding", IEEE Transactions on Info. Thoery, Jan., 1979 (pp. 97-100).
Yasuda et al., "High Rate Punctured Convolutional Codes for Soft Dec. Viterbi Decoding", IEEE Transactions on Comm., Mar., 1984, (pp. 315-319), vol. COM-32, #3.
Enders Peter
Heichler Johannes
ANT Nachrichtentechnik GmbH
Baker Stephen M.
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