Transmit power adjustment based on estimated electrical length of a loop
AssigneeBroadcom Corporation
InventorsVladimir Oksman, Raphael Rahamim
Life of this patent
Estimating the term…
Abstract
A method for estimating electrical length of a loop in a digital subscriber line (DSL) system begins by estimating an electrical length of a loop for each of a plurality signals based on a known power level of the plurality of signals, a known frequency for each of the plurality of signals, and a received power level for each of the plurality of signals. The method continues by processing the plurality of estimated electrical lengths in accordance with a function corresponding to characteristics of the loop to produce a determined electrical length.
Claims18
A method for estimating electrical length of a loop in a digital subscriber line (DSL) system, the method comprises:
- estimating an electrical length of the loop for each of a plurality of signals based on a known power level of the plurality of signals, a known frequency for each of the plurality of signals, and a received power level for each of the plurality of signals;
- and
- selecting one of the plurality of estimated electrical lengths having a smallest value to produce a determined electrical length of the loop.
An apparatus for estimating electrical length of a loop in a digital subscriber line (DSL) system, the apparatus comprises:
- means for estimating an electrical length of the loop for each of a plurality of signals based on a known power level of the plurality of signals, a known frequency for each of the plurality of signals, and a received power level for each of the plurality of signals;
- and
- means for selecting one of the plurality of estimated electrical lengths having a smallest value to produce a determined electrical length of the loop.
A method for estimating electrical length of a loop in a digital subscriber line (DSL) system, the method comprises:
- estimating an electrical length of the loop for each of a plurality of signals based on a known power level of the plurality of signals, a known frequency for each of the plurality of signals, and a received power level for each of the plurality of signals;
- weighting each of the plurality of estimated electrical lengths to produce a plurality of weighted estimated electrical lengths;
- and
- computing a determined electrical length of the loop as a function of the plurality of weighted estimated electrical lengths.
An apparatus for estimating electrical length of a loop in a digital subscriber line (DSL) system, the apparatus comprises:
- means for estimating an electrical length of the loop for each of a plurality of signals based on a known power level of the plurality of signals, a known frequency for each of the plurality of signals, and a received power level for each of the plurality of signals;
- and
- means for weighting each of the plurality of estimated electrical lengths to produce a plurality of weighted estimated electrical lengths;
- and
- means for computing a determined electrical length of the loop as a function of the plurality of weighted estimated electrical lengths.
Dependencies are inferred from the claim text.