Systems and methods for loop length and bridged tap length determination of a transmission line
AssigneeAware, Inc.
InventorMurat Belge
Life of this patent
Estimating the term…
Abstract
Through the use of a least squares minimization concept, the loop length, the number of bridged taps and length of the bridged taps on a transmission line can be determined from readily available modem data. In particular, the loop length, the number of bridge taps and the length of bridged taps can be estimated by comparing a measured frequency domain channel impulse response of the transmission line to a model of a loop that is comprised of multiple sections and multiple bridge taps.
Claims36
A loop length system to estimate a loop length of a link comprising:
- means for estimating a channel transfer function using one or more signals from an initialization, the initialization occurring between a first multicarrier transceiver connectable to a first end of the link and a second multicarrier transceiver connectable to a second end of the link, the one or more signals from the initialization having been transmitted or received using a multiplicity of discrete frequency carriers;
- means for determining a theoretical channel transfer function of the link;
- a processor for comparing the theoretical channel transfer function and the estimated channel transfer function;
- and
- means for determining the estimated loop length of the link based upon a result of the comparison, wherein the theoretical channel transfer function has as an input at least one parameter related to a wire gauge of the link.
A method to estimate a loop length of a link comprising:
- estimating a channel transfer function using one or more signals from an initialization, the initialization occurring between a first multicarrier transceiver connectable to a first end of the link and a second multicarrier transceiver connectable to a second end of the link, the one or more signals from the initialization having been transmitted or received using a multiplicity of discrete frequency carriers;
- determining a theoretical channel transfer function of the link;
- comparing, by a processor, the theoretical channel transfer function and the estimated channel transfer function;
- and
- determining the estimated loop length of the link based upon a result of the comparison, wherein the theoretical channel transfer function has as an input at least one parameter related to a wire gauge of the link.
A non-transitory computer readable information storage media having stored thereon instructions, that if executed by a processor, cause to be performed the steps of estimating a loop length of a link comprising:
- estimating a channel transfer function using one or more signals from an initialization, the initialization occurring between a first multicarrier transceiver connectable to a first end of the link and a second multicarrier transceiver connectable to a second end of the link, the one or more signals from the initialization having been transmitted or received using a multiplicity of discrete frequency carriers;
- determining a theoretical channel transfer function of the link;
- comparing, by the processor, the theoretical channel transfer function and the estimated channel transfer function;
- and
- determining the estimated loop length of the link based upon a result of the comparison, wherein the theoretical channel transfer function has as an input at least one parameter related to a wire gauge of the link.
A loop length system to estimate a loop length of a link comprising:
- a loop length output device configured to:
- estimate a channel transfer function using one or more signals from an initialization, the initialization occurring between a first multicarrier transceiver connectable to a first end of the link and a second multicarrier transceiver connectable to a second end of the link, the one or more signals from the initialization having been transmitted or received using a multiplicity of discrete frequency carriers;
- determine a theoretical channel transfer function of the link;
- compare, by a processor, the theoretical channel transfer function and the estimated channel transfer function;
- and
- determine the estimated loop length of the link based upon a result of the comparison, wherein the theoretical channel transfer function has as an input at least one parameter related to a wire gauge of the link.
Dependencies are inferred from the claim text.