Adaptive and intelligent modem
US6507827B1 · kind B1 · utility
8Cited by
3References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 16, 1999 |
| Grant date | Jan 14, 2003 |
| Priority date | — |
| Expiry date | Nov 16, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0003
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A modem to improve communication system performance that uses multiple modulation schemes comprising modulation technique and encoder combinations. As communication system performance and objectives change, different modulation schemes may be selected. Modulation schemes may also be selected upon the communication channel scattering function estimate, and the modem estimates the channel scattering function from measurements of the channel's frequency (doppler) and time (multipath) spreading characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.