Dynamic hybrid switching in a wireline modem
AssigneeTexas Instruments Incorporated
InventorNirmal C. Warke
Life of this patent
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Abstract
A method for dynamically switching hybrids during modem initialization to maximize channel capacity and performance includes the steps of evaluating each hybrid in the modem according to a cost function dependent on the quiet receive noise floor and the transmit signal echo, and then selecting the hybrid that results in the minimum value for the cost function. By performing these steps, the best available hybrid is selected in order to maximize channel capacity and hence maximize modem performance.
Claims16
A method for selecting an optimal hybrid in a modem having a plurality of hybrids, comprising the steps of:
- (a) evaluating a cost function that is a function of both echo signal power and receive noise floor for each of the plurality of hybrids;
- and
- (b) selecting the hybrid from among the plurality of hybrids that results in the minimum value for the cost function.
A modem, comprising:
- a plurality of hybrids;
- and
- a hybrid selector coupled to the plurality of hybrids for selecting one of the hybrids from among the plurality based on evaluating a cost function (J) which is a function of echo signal power and receive noise floor for each of the plurality of hybrids and choosing the hybrid that provides a minimum value of J.
Dependencies are inferred from the claim text.