Receiving device, equalization processing program, and signal receiving method

An equalization processing program causing an equalization processing circuit of a receiving device including

• the equalization processing circuit that performs an equalizing process for a received signal sequence generated from a received signal and outputs a sequence to be demodulated,
• a demodulation processing circuit that demodulates the sequence to be demodulated and outputs a received data sequence, and
• a modulation processing circuit that modulates the received data sequence to generate a transmitted signal sequence, to execute:
• a first transmission-path estimating process of generating a first compensation coefficient indicating a propagation coefficient of a transmission path of the received signal, based on a preamble sequence that is included in the received signal sequence and has a predetermined value,
• a first propagation-path compensating process of applying the first compensation coefficient to a header sequence included in the received signal sequence to generate a first equalizer-compensated output sequence in which distortion has been compensated,
• a second transmission-path estimating process of generating a second compensation coefficient from a header-replica sequence generated by performing demodulation and modulation for the header sequence included in the first equalizer-compensated output sequence,
• a third transmission-path estimating process of generating a third compensation coefficient by synthesizing the first compensation coefficient and the second compensation coefficient with each other, and
• a second propagation-path compensating process of performing a distortion compensating process for a payload sequence included in the received signal sequence based on the third compensation coefficient.

A signal receiving method of a receiving device including

• an equalization processing circuit that performs an equalizing process for a received signal sequence generated from a received signal and outputs a sequence to be demodulated,
• a demodulation processing circuit that demodulates the sequence to be demodulated and outputs a received data sequence, and
• a modulation processing circuit that modulates the received data sequence to generate a transmitted signal sequence, the method comprising, in the equalization processing circuit:
• performing a first transmission-path estimating process of generating a first compensation coefficient indicating a propagation coefficient of a transmission path of the received signal, based on a preamble sequence included in the received signal sequence and having a predetermined value;
• a first propagation-path compensating process of applying the first compensation coefficient to a header sequence included in the received signal sequence to generate generating a first equalizer-compensated output sequence in which distortion has been compensated;
• a second transmission-path estimating process of generating a second compensation coefficient from a header-replica sequence generated by performing demodulation and modulation for the header sequence included in the first equalizer-compensated output sequence;
• a third transmission-path estimating process of generating a third compensation coefficient by synthesizing the first compensation coefficient and the second compensation coefficient with each other;
• and
• a second propagation-path compensating process of performing a distortion compensating process for a payload sequence included in the received signal sequence based on the third compensation coefficient.