Calibration methods and structures in wireless communications systems
US7392015B1 · kind B1 · utility
199Cited by
38References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 7, 2004 |
| Grant date | Jun 24, 2008 |
| Priority date | — |
| Expiry date | Apr 14, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/0825
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Calibration methods and structures are provided for wireless communications devices that compensate across a signal bandwidth for relative gain and phase errors between spatial communication channels while utilizing existing transceiver structures and facilitating the use of frequency-domain spatial processing. The methods and structures are directed to time-division duplex (TDD) systems, and are particularly suited to those that incorporate orthogonal frequency division multiplexing (OFDM).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.