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US 2006/0215742 A1Published application
Optimizing for impulse noise protection in a DSL system
AssigneeTexas Instruments Incorporated
InventorCory Modlin
Life of this patent
Estimating the term…
Abstract
In a digital subscriber line (DSL) network, a net coding gain penalty is determined for provision of impulse noise protection. FEC coding, interleaver depth, and framing parameters are selected to maximize the impulse noise protection while not causing an excessive increase in transmit power or equivalently, loss of net coding gain.
Claims11
A method used during rate adaptation in a digitial subscriber line (DSL), comprising:
- applying a forward error correction (FEC) code to a data stream,
- applying interleaving to the data stream;
- and
- meeting latency, margin, and data rate requirements for the data stream, wherein when a net data rate for a latency path is capped, the criteria used to select framing parameters results in an increase in the impulse noise protection (INP).
1 more element
A system for data transmission, comprising:
- a first modem at a central office on a digital subscriber line (DSL line) transmitting a downstream data stream and receiving an upstream data stream;
- a second modem, operatively connected to the first modem as a downstream sub-carrier on the DSL line, transmitting the upstream data stream and receiving the downstream data stream,
- wherein the first modem applies a forward error correction (FEC) code to the downstream data stream, an interleaving to the downstream data stream, and meets latency, margin, and data rate requirements for the downstream data stream, and
- wherein when a net data rate for a latency path is capped on the downstream data stream, the criteria used to select framing parameters results in an increase in the impulse noise protection (INP).
1 more element
Dependencies are inferred from the claim text.