Systems and methods for multistage signal detection in mimo transmissions and iterative detection of precoded OFDM
US7216267B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2005 |
| Grant date | May 8, 2007 |
| Priority date | — |
| Expiry date | Sep 13, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0643
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Systems and methods for multi-stage signal detection in MIMO transmission including Bernoulli-Gaussian detection are provided. A multistage iterative signal decoder is provided that exploits the property that in a relatively simply decoding scheme such as mean square error (MSE) or zero-forcing (ZF) only a small portion of the total symbols are mis-detected. Therefore, an optimality test is performed on the output of a relatively low complexity decoder unit. If the symbol passes the optimality test, it is presumed to be correctly decoded. Otherwise, the symbol is sent for further processing to a relatively higher complexity decoding unit such as a sphere decoder. In this way, processing efficiency is increased, because only those symbols requiring additional processing are processed by the high complexity processing unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.