Channel estimation device and related method of an orthogonal frequency division multiplexing system
US7978776B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 16, 2008 |
| Grant date | Jul 12, 2011 |
| Priority date | — |
| Expiry date | Jan 31, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0061
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A channel estimation device for orthogonal frequency division multiplexing system and related method. The transmitting end transmits error detection signal of subcarrier, and the channel estimation is decided by whether the received signal at the receiving end is correct. Furthermore, in order to reduce the calculation complexity of the channel estimation, least square estimation is performed first, then MMSE estimation is performed to obtain more precise channel estimation, and singular value decomposition is utilized to reduce the calculation complexity of MMSE. The above-mentioned channel estimation method can obtain a better system efficiency in fast time variant channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.