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US 2003/0147526 A1Published application
Adaptive cancellation network system and method for digital subscriber line
AssigneeTexas Instruments Incorporated
InventorsSandeep K. Oswal, Prakash Easwaran, Arijit Raychowdhury, Fernando A. Mujica
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Abstract
A method for reducing transmit echo in a DSL modem comprises selecting at least one cancellation device of a plurality of cancellation devices. An attenuation signal is generated using the selected cancellation device. At least a portion of transmit echo is removed from a receive signal using the attenuation signal.
Claims20
A method for reducing transmit echo in a DSL modem, comprising:
- selecting at least one cancellation device of a plurality of cancellation devices;
- generating an attenuation signal using the selected cancellation device;
- and
- removing at least a portion of transmit echo from a receive signal using the attenuation signal.
1 more element
A DSL modem, comprising:
- a plurality of cancellation devices;
- and
- circuitry operable to select at least one cancellation device of the plurality of cancellation devices, generate an attenuation signal using the selected cancellation device, and remove at least a portion of transmit echo transfer function from a receive signal using the attenuation signal.
An adaptive cancellation network, comprising:
- a first cancellation device operable to generate a first attenuation signal;
- a second cancellation device operable to generate a second attenuation signal;
- and
- a controller operable to select at least one of the cancellation devices wherein the attenuation signal associated with the selected cancellation device is used to attenuate transmit echo.
1 more element
Dependencies are inferred from the claim text.