06023783 is referenced by 399 patents and cites 5 patents.

Several improved turbo code apparatuses and methods. The invention encompasses several classes: (1) A data source is applied to two or more encoders with an interleaver between the source and each of the second and subsequent encoders. Each encoder outputs a code element which may be transmitted or stored. A parallel decoder provides the ability to decode the code elements to derive the original source information d without use of a received data signal corresponding to d. The output may be coupled to a multilevel trellis-coded modulator (TCM). (2) A data source d is applied to two or more encoders with an interleaver between the source and each of the second and subsequent encoders. Each of the encoders outputs a code element. In addition, the original data source d is output from the encoder. All of the output elements are coupled to a TCM. (3) At least two data sources are applied to two or more encoders with an interleaver between each source and each of the second and subsequent encoders. The output may be coupled to a TCM. (4) At least two data sources are applied to two or more encoders with at least two interleavers between each source and each of the second and subsequent encoders. (5) At least one data source is applied to one or more serially linked encoders through at least one interleaver. The output may be coupled to a TCM. The invention includes a novel way of terminating a turbo coder.

Title
Hybrid concatenated codes and iterative decoding
Application Number
8/857021
Publication Number
6023783
Application Date
May 15, 1997
Publication Date
February 8, 2000
Inventor
Fabrizio Pollara
La Canada
CA, US
Dariush Divsalar
Pacific Palisades
CA, US
Agent
Fish & Richardson P C
Assignee
California Institute of Technology
CA, US
IPC
H04L 25/49
H03M 13/22
H03M 13/12
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