Memory efficient OFDM channel estimation and frequency domain diversity processing
US7466778B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2006 |
| Grant date | Dec 16, 2008 |
| Priority date | — |
| Expiry date | Jan 17, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L25/0232
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A frequency domain diversity DVB receiver device includes multiple antenna ports for receiving radio signals, and radio signal processing circuits connected to the antenna ports that convert the received radio signals into digital samples. The digital samples from the different antenna ports time-share a front-end processor which processes the digital samples to provide time-domain symbols. The time-domain symbols are stored in time-domain symbol buffers according to which of the antenna ports the time-domain symbols are received. A fast fourier transform circuit then retrieves the time-domain symbols and converts them frequency-domain symbols, which are then stored one or more frequency-domain symbol buffers according to the antenna ports the corresponding radio signals are received. A diversity processor which combines the frequency-domain symbols from the frequency-domain symbol buffers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.