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US 8,711,916 B2Granted
Tap initialization of equalizer based on estimated channel impulse response
AssigneeIntel Corporation
InventorJie Zhu
Life of this patent
Estimating the term…
Abstract
A method of initializing tap coefficients of an equalizer may include estimating impulse response coefficients of a channel through which a received signal traveled based on a known portion of the received signal. The method may also include loading the impulse response coefficients into a channel filter and generating a reference signal. The reference signal may be passed through the channel filter to build a training signal. Tap coefficients of the equalizer may be adjusted based on the training signal from the channel filter and on a delayed version of the reference signal.
Claims12
An equalizer, comprising:
- a channel estimator to estimate an impulse response of a transmission channel based on a received signal;
- a channel filter coupled to said estimator to load coefficients;
- a training signal generator coupled to said channel filter to send a reference signal through the channel filter to build a training signal, said generator to generate a delayed reference signal and train the equalizer with the training signal and the delayed reference signal;
- and
- said training signal generator to generate a reference signal, the generator including a plurality of reference signal generators each coupled to a separate channel filter and an adjustable equalizer portion to initialize equalizer coefficients based on the reference signal and on the training signal from the training signal generator.
2 more elements
A method comprising:
- estimating channel impulse response using a received signal;
- loading channel coefficients into a channel filter;
- building a training signal by passing a reference signal through the channel filter;
- and
- training an equalizer with the training signal and a delayed reference signal, using a training signal generator including a plurality of reference signal generators each coupled to a separate channel filter and an adjustable equalizer portion to initialize equalizer coefficients based on the reference signal and on the training signal from the training signal generator.
2 more elements
Dependencies are inferred from the claim text.