Method and apparatus for equalizer updating and sampling rate control

A receiver, comprising:

• an analog-to-digital converter for sampling a received signal including a known signal;
• an equalizer for equalizing the sampled signal except for a real component of the known signal;
• and
• a timing control unit for controlling the analog-to-digital converter,
• wherein the real component of the known signal is used to control the timing unit.

A receiver, comprising:

• an analog-to-digital converter for sampling a received signal including a known signal;
• an equalizer for equalizing the sampled signal, where the same equalizer coefficient is used to update both real and imaginary components of the known signal;
• and
• a timing control unit for controlling the analog to digital converter,
• wherein the equalized, real component of the known signal is used to control the timing unit, and
• wherein the same equalizer coefficient is a real-valued equalizer coefficient which is updated using the imaginary component but not the real component.

A receiver, comprising:

• an analog-to-digital converter for sampling a received signal including a known signal;
• an equalizer for equalizing the sampled signal including:
• a first mechanism to process a real component of the known signal, and
• a second mechanism to process an imaginary component of the known signal;
• and
• a timing control unit for controlling the analog to digital converter,
• wherein one of the first and second mechanisms is arranged to process one of the real and imaginary components of the known signal which has not been equalized to control the timing unit, and
• wherein the other of the first and second mechanisms is arranged to (a) permit equalization of the other of the real and imaginary components of the known signal by the equalizer, and (b) adapt the equalizer using only the other of the real and imaginary components of the known signal and recovery of a timing signal.