Method and arrangement for power minimization in a multi-tone transmission-based communication system
US8238545B2 · kind B2 · utility
1Cited by
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10Claims
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Key dates
| Filing date | Oct 11, 2006 |
| Grant date | Aug 7, 2012 |
| Priority date | — |
| Expiry date | Sep 27, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W52/04
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and transmitter unit in a multi-tone multi-line based transmission system such as a digital subscriber line system for determining a Power Spectral Density (PSD) of a plurality of users over a physical channel for at least one tone. Each of the users has a minimum required data rate and a maximum allowed power. A Power Minimization Problem (PMP) is formulated mathematically introducing Lagrangian multipliers and by utilizing a dual decomposition approach for the objective function of the PMP in order to solve the PMP on a per-tone basis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.