Matched filter circuit apparatus in the base band process system of the terminal device and method thereof

A matched filtering method in a baseband processing system of a terminal device, said method comprising the following steps of:

• providing a matched filter circuit apparatus which comprises a control unit, a coherent integral unit and a coherent integral buffer;
• the control unit of said matched filtering circuit apparatus generating and outputting a coherent integral control signal;
• wherein said coherent integral control signal is in valid state in a working clock of a first calculation period of each group of demodulated data, while in invalid state in a working clock of a second calculation period of each group of demodulated data, which always repeats when a matched filter is in working state;
• when said coherent integral control signal is valid, the coherent integral unit in said matched filtering circuit apparatus directly accumulating the current input correlated summation and buffering the accumulation result into the coherent integral buffer of said matched filtering circuit apparatus as calculation result of the current period;
• and
• when said coherent integral control signal is invalid, said coherent integral unit of the matched filtering circuit apparatus accumulating the current input correlated summation result and calculation result of the first calculation period buffered in said coherent integral buffer of the matched filtering circuit apparatus to demodulate out a group of complete symbol data.