Adaptive iterative detection
US7092457B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2001 |
| Grant date | Aug 15, 2006 |
| Priority date | — |
| Expiry date | Jan 22, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0054
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system for estimating inputs and outputs of a digital transmission system is disclosed. The system includes a receiver front-end configured to receive an observed digital signal in the digital transmission system. The system further includes forward and backward recursion elements, at least one forward channel estimator, at least one backward channel estimator, and a combiner. The forward recursion element is adapted to receive the observed digital signal, and generate a first sequence of soft information by performing a forward recursion. The forward channel estimator is adapted to receive the observed digital signal and the first sequence of soft information, and to estimate channel parameters using the first sequence of soft information. The backward recursion element is adapted to receive the observed digital signal, and generate a second sequence of soft information by performing a backward recursion. The backward channel estimator is adapted to receive the observed digital signal and the second sequence of soft information, and to estimate channel parameters using the second sequence of soft information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.