A transmitter comprising: an L1, Layer-1, signaling data generator configured to generate, from transmission parameters of a main signal, L1 signaling data storing the transmission parameters and including L1-pre signaling data and L1-post signaling data; a first error correction coding unit configured to perform error correction coding on the L1-pre signaling data; characterized by an energy dispersion unit configured to perform or not to perform energy dispersion on the L1-post signaling data; a second error correction coding unit configured to perform error correction coding on the energy-dispersed L1-post signaling data or on the L1-post signaling data without being energy dispersed; and a mapper (1023, 1026) configured to perform mapping on i) the error correction coded L1-pre signaling data and the energy-dispersed, error correction coded L1-post signaling data or ii) the error correction coded L1-pre signaling data and the error correction coded L1-post signaling data without being energy dispersed, wherein the L1-pre signaling data is provided to the first error correction coding unit without being energy-dispersed, and the L1 signaling data generator stores, in the L1-pre signaling data, energy dispersion information indicating that energy dispersion has been performed, and the energy dispersion unit performs the energy dispersion on the L1-post signaling data, or the L1 signaling data generator stores, in the L1-pre signaling data, the energy dispersion information indicating that energy dispersion has not been performed, and the energy dispersion unit does not perform the energy dispersion on the L1-post signaling data, and the energy dispersion unit performs the energy dispersion using a PRBS, Pseudo Random Binary Sequence, and initializes the PRBS at a start of the L1-post signaling data. an L1, Layer-1, signaling data generator configured to generate, from transmission parameters of a main signal, L1 signaling data storing the transmission parameters and including L1-pre signaling data and L1-post signaling data; a first error correction coding unit configured to perform error correction coding on the L1-pre signaling data; an energy dispersion unit configured to perform or not to perform energy dispersion on the L1-post signaling data; a second error correction coding unit configured to perform error correction coding on the energy-dispersed L1-post signaling data or on the L1-post signaling data without being energy dispersed; and a mapper (1023, 1026) configured to perform mapping on i) the error correction coded L1-pre signaling data and the energy-dispersed, error correction coded L1-post signaling data or ii) the error correction coded L1-pre signaling data and the error correction coded L1-post signaling data without being energy dispersed, wherein the L1-pre signaling data is provided to the first error correction coding unit without being energy-dispersed, and the L1 signaling data generator stores, in the L1-pre signaling data, energy dispersion information indicating that energy dispersion has been performed, and the energy dispersion unit performs the energy dispersion on the L1-post signaling data, or the L1 signaling data generator stores, in the L1-pre signaling data, the energy dispersion information indicating that energy dispersion has not been performed, and the energy dispersion unit does not perform the energy dispersion on the L1-post signaling data, and the energy dispersion unit performs the energy dispersion using a PRBS, Pseudo Random Binary Sequence, and initializes the PRBS at a start of the L1-post signaling data.