Receiver apparatus, method for processing received signal and computer program product

A method for processing a received signal, the method comprising:

• converting the received signal from a time domain into a frequency domain to output a converted signal;
• calculating a plurality of propagation path estimated values based on pilot subcarriers included in the converted signal;
• and
• filtering the plurality of propagation path estimated values to compensate propagation path distortion in the converted signal,
• wherein the filtering further includes:
• multiplying the plurality of propagation path estimated values corresponding to a plurality of taps other than a center tap, respectively, by a plurality of filtering coefficients;
• adding output values of the plurality of first multipliers;
• calculating an error between an output value of the first adder and a propagation path estimated value corresponding to the center tap;
• generating the filtering coefficients based on the error;
• multiplying the propagation path estimated value corresponding to the center tap by a first coefficient;
• multiplying the output value of the first adder by a second coefficient;
• and
• adding an output value of the second multiplier and an output value of the third multiplier.

A computer program product stored in a non-transitory computer readable medium, the computer program product includes computer executable instructions for processing a received signal, including instruction for:

• converting the received signal from a time domain into a frequency domain to output a converted signal;
• calculating a plurality of propagation path estimated values based on pilot subcarriers included in the converted signal;
• and
• filtering the plurality of propagation path estimated values to compensate propagation path distortion in the converted signal,
• wherein the filtering further includes:
• multiplying the plurality of propagation path estimated values corresponding to a plurality of taps other than a center tap, respectively, by a plurality of filtering coefficients;
• adding output values of the plurality of first multipliers;
• calculating an error between an output value of the first adder and a propagation path estimated value corresponding to the center tap;
• generating the filtering coefficients based on the error;
• multiplying the propagation path estimated value corresponding to the center tap by a first coefficient;
• multiplying the output value of the first adder by a second coefficient;
• and
• adding an output value of the second multiplier and an output value of the third multiplier.