Methods for over-the-air blind synchronization of two OFDMA-based networks that minimizes interference and by using an extended correlation window length
US8223743B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2009 |
| Grant date | Jul 17, 2012 |
| Priority date | — |
| Expiry date | Oct 30, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W56/00
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Synchronization of a macrocell network with one of its sub networks (e.g., a femtocell network, a microcell network) is important for reducing the level of inter-carrier interference (ICI) that exists between the uplink users of a macrocell network and the sub-network. Even though blind synchronization techniques based on single-user signal conditions are known, the signal models are ineffective in multiuser scenarios and do not provide for reducing ICI effects. A blind synchronization method is disclosed which reduces ICI for sub network communications. Additionally, a method is disclosed which accurately and blindly synchronizes to the first user using an extended correlation window.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.