Methods and devices for selecting sets of available sub-channels
US7701909B2 · kind B2 · utility
5Cited by
1References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 17, 2004 |
| Grant date | Apr 20, 2010 |
| Priority date | — |
| Expiry date | Dec 21, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L5/0044
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Information is transmitted over selected, Orthogonal Frequency Division Multiplexed (OFDM) sub-channels to avoid frequencies with unacceptable congestion, noise or interference levels. Using frequency hopping, selected non-contiguous OFDM sub-channels used for transmission may vary with time. Once a group of OFDM sub-channels is selected, a power level and modulation technique may also be selected based on channel quality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.