Method and apparatus for receiver pulse response determination

A microprocessor system programmed with instructions for determining a pulse response value, the instructions comprising:

• instructions for receiving a sequence of symbols which include multiple occurrences of a first symbol, each occurrence of the first symbol being associated with a signal value;
• instructions for determining a first average signal value associated with the first symbol by averaging signal values associated with the multiple occurrences of the first symbol;
• instructions for determining a second average signal value associated with the first symbol by averaging signal values associated with a subset of the multiple occurrences of the first symbol;
• and
• instructions for determining the pulse response value based at least on a difference between the first average signal value and the second average signal value.

A system for determining a pulse response value, comprising:

• a receiver to receive a sequence of symbols which include multiple occurrences of a first symbol, each occurrence of the first symbol being associated with a signal value;
• a first sub-system to determine a first average signal value associated with the first symbol by averaging signal values associated with the multiple occurrences of the first symbol;
• a second sub-system to determine a second average signal value associated with the first symbol by averaging signal values associated with a subset of the multiple occurrences of the first symbol;
• and
• a third sub-system to determine the pulse response value based at least on a difference between the first average signal value and the second average signal value.

A method for determining a pulse response value P(k), comprising:

• receiving a sequence of symbols D(n), which include multiple occurrences of symbol s, each occurrence of symbol s being associated with a signal value;
• determining a first average signal value A(D(n):
• D(n)=s) associated with symbol s by averaging signal values associated with the multiple occurrences of symbol s;
• determining a second average signal value A(D(n):
• D(n)=s, D(n−k)=s) associated with symbol s by averaging signal values associated with a subset of the multiple occurrences of symbol s in which the kth preceding symbol is also s;
• and
• determining the pulse response value P(k) based at least on a difference between A(D(n):
• D(n)=s) and A(D(n):
• D(n)=s, D(n−k)=s).

A microprocessor system programmed with instructions for determining a pulse response value P(k), the instructions comprising:

• instructions for receiving a sequence of symbols D(n) which include multiple occurrences of symbol s, each occurrence of symbol s being associated with a signal value;
• instructions for determining a first average signal value A(D(n):
• D(n)=s) associated with symbol s by averaging signal values associated with the multiple occurrences of symbol s;
• instructions for determining a second average signal value A(D(n):
• D(n)=s, D(n−k)=s) associated with symbol s by averaging signal values associated with a subset of the multiple occurrences of symbol s in which the kth preceding symbol is also s;
• and
• instructions for determining the pulse response value P(k) based at least on a difference between A(D(n):
• D(n)=s) and A(D(n):
• D(n)=s, D(n−k)=s).

A system for determining a pulse response value P(k), comprising:

• a receiver to receive a sequence of symbols D(n) which include multiple occurrences of symbol s, each occurrence of symbol s being associated with a signal value;
• a first sub-system to determine a first average signal value A(D(n):
• D(n)=s) associated with symbol s by averaging signal values associated with the multiple occurrences of symbol s;
• a second sub-system to determine a second average signal value A(D(n):
• D(n)=s, D(n−k)=s) associated with symbol s by averaging signal values associated with a subset of the multiple occurrences of symbol s in which the kth preceding symbol is also s;
• and
• a third sub-system to determine the pulse response value P(k) based at least on a difference between A(D(n):
• D(n)=s) and A(D(n):
• D(n)=s, D(n−k)=s).