Carrier recovery architectures for multi input multi output orthogonal frequency division multiplexing receivers
US7545891B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 7, 2005 |
| Grant date | Jun 9, 2009 |
| Priority date | — |
| Expiry date | Dec 12, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2025/03522
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A modem system for transmitting and receiving signals having a frequency domain equalizer (FEQ) being responsive to a plurality of received data symbols for processing the same to generate one or more equalized data symbols, said modem system being responsive to a plurality of received baseband signals for processing the same to generate said plurality of received data symbols, said plurality of received data symbols for including one or more sets of pilot tones, said FEQ for processing said sets of pilot tones to generate one or more sets of equalized sets of pilot tones, in accordance with an embodiment of the present invention. The modem system further includes a frequency offset detection module being responsive to said sets of equalized pilot tones to generate one or more instantaneous carrier offsets, said modem system for processing said instantaneous carrier offsets to generate one or more frequency corrections for applying the same to said plurality of received baseband signals to remove carrier offsets therefrom, wherein the flexible architecture of said modem system allows for removal of said carrier offsets to improve reception of said plurality of received baseband sig…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.