Method and apparatus for iteratively detecting and decoding signal in communication system with multiple-input and multiple-out (MIMO) channel
US9042493B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 2013 |
| Grant date | May 26, 2015 |
| Priority date | — |
| Expiry date | Nov 26, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/0342
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A communication apparatus with a multiple-input and multiple-output (MIMO) channel, includes a minimum mean square error (MMSE) detector configured to estimate quadrature amplitude modulation (QAM) symbols based on signals received through the MIMO channel. The apparatus further includes a QAM demodulator configured to demodulate the estimated QAM symbols, and estimate a first posterior probability of each of encoded bits of the estimated QAM symbols, and a first module configured to remove a first prior probability of each of the encoded bits from the first posterior probability to generate soft estimates of the encoded bits. The apparatus further includes a channel decoder configured to decode the encoded bits based on the soft estimates, and generate an improved posterior probability of each of the encoded bits, and a second module configured to generate a second prior probability of each of the encoded bits based on the improved posterior probability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.