Symbol timing for MIMO OFDM and other wireless communication systems
US7254196B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 2003 |
| Grant date | Aug 7, 2007 |
| Priority date | — |
| Expiry date | Sep 23, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L7/041
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Symbol timing for a wireless communication system, such as a multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) wireless LAN system, is determined by summing the powers for an appropriate set of channel impulse responses, integrating this power summation over an appropriate window (e.g., equivalent to the guard interval), and identifying the time at which the maximum integration occurs. Depending on the implementation, symbol timing can be determined for each receiver branch individually or for all receiver branches jointly. In either case, the determined symbol timing(s) can minimize the amount of inter-symbol and inter-channel interferences that are invoked in the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.