Channel estimation and/or equalization using repeated adaptation

A communication receiver that receives a signal, comprising:

• a channel estimator;
• a channel equalizer that is operable to calculate a plurality of channel equalizer tap coefficients, the plurality of channel equalizer tap coefficients being used to equalize for any communication channel-induced changes within the received signal, the channel equalizer operable to be selectively communicatively coupled to the channel estimator;
• and
• wherein the communication receiver being selectively operable within a system identification mode and a channel equalizer mode;
• within the system identification mode, the channel estimator employs repeated adaptation on the received signal to estimate a characteristic of a communication channel and then provides the channel estimate to the channel equalizer, the channel equalizer then performing direct calculation of the plurality of equalizer tap coefficients;
• within the channel equalizer mode, the channel equalizer employs repeated adaptation on the received signal to calculate the plurality of equalizer tap coefficients;
• the repeated adaptation of the system identification mode comprises a plurality of channel equalizer cycles;
• and
• the repeated adaptation of the channel equalizer mode comprises a plurality of channel equalizer cycles.

A communication receiver that receives a signal that comprises a training sequence portion and a data portion, the communication receiver comprising:

• a channel estimator;
• a channel equalizer that is operable to calculate a plurality of channel equalizer tap coefficients, the plurality of channel equalizer tap coefficients being used to equalize for any communication channel-induced changes within the received signal, the channel equalizer operable to be selectively communicatively coupled to the channel estimator;
• and
• wherein the channel estimator employs repeated adaptation on the received signal to estimate a characteristic of a communication channel and then provides the channel estimate to the channel equalizer, the channel equalizer then performing direct calculation of the plurality of equalizer tap coefficients based on the channel estimate provided by the channel estimator;
• and
• the repeated adaptation performed by the channel estimator comprises a plurality of channel estimation cycles.

A repeated adaptation communication receiver method, comprising:

• receiving a signal that is transmitted via a communication channel, the received signal comprising a training sequence portion and a data portion;
• selectively estimating a characteristic of a communication channel using repeated adaptation on at least one of the training sequence portion and the data portion, the repeated adaptation of the selective channel estimation being performed using a plurality of channel estimation cycles;
• and
• selectively calculating a plurality of channel equalizer tap coefficients using repeated adaptation on at least one of the training sequence portion and the data portion, the plurality of channel equalizer tap coefficients being used to equalize for any communication channel-induced changes within the received signal.

A repeated adaptation communication receiver method, comprising:

• receiving a signal that is transmitted via a communication channel, the received signal comprising a training sequence portion and a data portion;
• initially estimating a characteristic of a communication channel using repeated adaptation on the training sequence portion and the data portion, the repeated adaptation of the selective channel estimation being performed using a plurality of channel estimation cycles;
• and
• subsequently employing the estimated characteristic of the communication channel to perform direct calculation of a plurality of equalizer tap coefficients, the plurality of equalizer tap coefficients being used to equalize any communication channel-induced changes within the received signal.