A reception device (201; 251) comprising: a first demodulation unit configured to demodulate a multiplexed signal (Sa, Sa') formed by multiplexing data and a transmission parameter including a parameter necessary for demodulating the data, the transmission parameter being located in a specific position timewise; a second demodulation unit configured to demodulate the multiplexed signal (Sa, Sa'); a signal combining unit configured to combine, after acquisition of the transmission parameter, a first demodulated multiplexed signal (Sb) from the first demodulation unit and a second demodulated multiplexed signal (Sb') from the second demodulation unit, thereby obtaining a combined signal (Sb*); a first error correction unit configured to perform error correction on the combined signal (Sb*) thereby obtaining a first output signal (Sc*), and supply the first output signal (Sc*) to a first transmission parameter processing unit; and a second error correction unit configured to perform error correction on the second demodulated multiplexed signal (Sb') thereby obtaining a second output signal (Sc'), and supply the second output signal (Sc') to a second transmission parameter processing unit; the first transmission parameter processing unit being configured to extract the transmission parameter from the first output signal (Sc*), and supply the extracted transmission parameter to the first demodulation unit; and the second transmission parameter processing unit being configured to extract the transmission parameter from the second output signal (Sc'), and supply the extracted transmission parameter to the second demodulation unit. a first demodulation unit configured to demodulate a multiplexed signal (Sa, Sa') formed by multiplexing data and a transmission parameter including a parameter necessary for demodulating the data, the transmission parameter being located in a specific position timewise; a second demodulation unit configured to demodulate the multiplexed signal (Sa, Sa'); a signal combining unit configured to combine, after acquisition of the transmission parameter, a first demodulated multiplexed signal (Sb) from the first demodulation unit and a second demodulated multiplexed signal (Sb') from the second demodulation unit, thereby obtaining a combined signal (Sb*); a first error correction unit configured to perform error correction on the combined signal (Sb*) thereby obtaining a first output signal (Sc*), and supply the first output signal (Sc*) to a first transmission parameter processing unit; and a second error correction unit configured to perform error correction on the second demodulated multiplexed signal (Sb') thereby obtaining a second output signal (Sc'), and supply the second output signal (Sc') to a second transmission parameter processing unit; the first transmission parameter processing unit being configured to extract the transmission parameter from the first output signal (Sc*), and supply the extracted transmission parameter to the first demodulation unit; and the second transmission parameter processing unit being configured to extract the transmission parameter from the second output signal (Sc'), and supply the extracted transmission parameter to the second demodulation unit.