Reception apparatus performing turbo equalizations
US9967113B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 2016 |
| Grant date | May 8, 2018 |
| Priority date | — |
| Expiry date | Nov 9, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0058
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Disclosed is a reception apparatus that has solved a problem that fluctuations cannot be followed immediately after a commencement of turbo equalization in a high-speed fading environment. A reception apparatus includes a soft interference canceller, an MMSE equalizer, a likelihood calculator, a de-interleaver, an SISO decoder, an information bit hard decision unit, a subtracter, an interleaver, a soft estimation value calculator, a zero storage unit, a known signal memory unit, a transmission path estimator, and a plurality of switches. At the time of equalization, the transmission path estimator uses, as a reference signal, a known signal stored in the known signal memory unit or an output of the MMSE equalizer. Meanwhile, at the time of a first equalization, the soft interference canceller is given a ‘0’ value from the zero storage unit as a reference signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.