Reception device, communication device, and demodulation method

A reception device to receive a block signal from a transmission device that generates and transmits the block signal that is a signal having a construction in which a sequence of static symbols is added to a leading part and a trailing part of a sequence of data symbols, the reception device comprising:

• a transmission-path estimator to calculate a transmission-path estimation value on the basis of static symbols included in the block signal;
• and
• a block signal demodulator to demodulate the block signal on the basis of the transmission-path estimation value calculated by the transmission-path estimator,
• wherein the transmission-path estimator calculates an initial value of the transmission-path estimation value on the basis of static symbols included in a first block signal that is a block signal to be demodulated, and recalculates a transmission-path estimation value on the basis of a result obtained by the block signal demodulator demodulating data symbols included in the first block signal using the initial value and a result of demodulation of data symbols included in a second block signal that is a block signal having been received immediately-previously to the first block signal, and
• when the transmission-path estimator recalculates a transmission-path estimation value, the block signal demodulator demodulates the first block signal again using the recalculated transmission-path estimation value.