Method for selecting the data rate for PCM upstream transmission
US7239664B2 · kind B2 · utility
0Cited by
12References
3Claims
0Family size
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Inventor
Key dates
| Filing date | Dec 7, 2005 |
| Grant date | Jul 3, 2007 |
| Priority date | — |
| Expiry date | Dec 7, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L1/0003
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method selects the data rate for pulse code modulation upstream transmission by determining an approximate transmit power before the upstream transmission reaches a transmit equalizer based on a recorder power output and a distance halfway between an outermost constellation point and a point following the outermost point. The determined approximate transmit power is multiplied by the power of the transmit equalizer to determine a post-equalizer transmit value. A data rate is selected which is less than a predetermined regulatory limit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.