Method and apparatus for low power simultaneous frequency, automatic gain control and timing acquisition in radio receivers
US8509355B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2008 |
| Grant date | Aug 13, 2013 |
| Priority date | — |
| Expiry date | Dec 7, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2027/0026
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and apparatus are provided for low power simultaneous frequency, automatic gain control and timing acquisition in a low power radio receiver. A baseband signal received is split into a limited signal having limited data and a non-limited signal. The limited signal is fed through a limited phase-shift keying (PSK) correlation path in which a PSK correlator operating on the limited signal simultaneously determines coarse frequency estimations, timing estimations, and packet synchronization detection. The non-limited signal is fed through an automatic gain control path where automatic gain control is performed on the non-limited signal simultaneously with the coarse frequency and timing estimations and packet synchronization detection performed by the PSK correlator. By operating the PSK correlator on limited data from the received baseband signal and through a separate path from the automatic gain control, substantial power savings are achieved without degrading performance since the preamble time is significantly reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.