Serial turbo trellis coded modulation using a serially concatenated coder
US8086943B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 2, 2010 |
| Grant date | Dec 27, 2011 |
| Priority date | — |
| Expiry date | Aug 2, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/2972
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Serial concatenated trellis coded modulation (SCTCM) includes an outer coder, an interleaver, a recursive inner coder and a mapping element. The outer coder receives data to be coded and produces outer coded data. The interleaver permutes the outer coded data to produce interleaved data. The recursive inner coder codes the interleaved data to produce inner coded data. The mapping element maps the inner coded data to a symbol. The recursive inner coder has a structure which facilitates iterative decoding of the symbols at a decoder system. The recursive inner coder and the mapping element are selected to maximize the effective free Euclidean distance of a trellis coded modulator formed from the recursive inner coder and the mapping element. The decoder system includes a demodulation unit, an inner SISO (soft-input soft-output) decoder, a deinterleaver, an outer SISO decoder, and an interleaver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.