A transmission device, comprising: a first communication control means for generating a wideband transmission signal based on a first radio access scheme; a second communication control means for generating a narrowband transmission signal based on a second radio access scheme different from the first radio access scheme; transmission parameter determining means for determining a usage status specifying a current usage of frequency resources of the frequency spectrum of the transmission signal based on the first radio access scheme that is generated by the first communication control means, and determining a transmission parameter of the transmission signal based on the second radio access scheme that is generated by the second communication control means; pulse-shaping control means for controlling the first communication control means so as to pulse-shape the transmission signal based on the first radio access scheme that is generated by the first communication control means, such that the frequency spectrum of the pulse-shaped transmission signal based on the first radio access scheme has a plurality of frequency components that are correlated with each other on the basis of a determination result obtained by the transmission parameter determining means; adding means for generating a transmission signal by adding the pulse-shaped transmission signal based on the first radio access scheme to the transmission signal based on the second radio access scheme, enabling a separation of the transmission signal at a receiver side; and transmitting means for transmitting the transmission signal generated by the addition performed by the adding means, wherein the first communication control means generates a wideband signal as a component of the transmission signal, the second communication control means generates a narrowband signal as another component of the transmission signal, and the first communication control means pulse-shapes the transmission signal which is the wideband signal, on the basis of the control performed by the pulse-shaping control means, so that spectral redundancy owing to cyclostationarity increases. a first communication control means for generating a wideband transmission signal based on a first radio access scheme; a second communication control means for generating a narrowband transmission signal based on a second radio access scheme different from the first radio access scheme; transmission parameter determining means for determining a usage status specifying a current usage of frequency resources of the frequency spectrum of the transmission signal based on the first radio access scheme that is generated by the first communication control means, and determining a transmission parameter of the transmission signal based on the second radio access scheme that is generated by the second communication control means; pulse-shaping control means for controlling the first communication control means so as to pulse-shape the transmission signal based on the first radio access scheme that is generated by the first communication control means, such that the frequency spectrum of the pulse-shaped transmission signal based on the first radio access scheme has a plurality of frequency components that are correlated with each other on the basis of a determination result obtained by the transmission parameter determining means; adding means for generating a transmission signal by adding the pulse-shaped transmission signal based on the first radio access scheme to the transmission signal based on the second radio access scheme, enabling a separation of the transmission signal at a receiver side; and transmitting means for transmitting the transmission signal generated by the addition performed by the adding means, wherein the first communication control means generates a wideband signal as a component of the transmission signal, the second communication control means generates a narrowband signal as another component of the transmission signal, and the first communication control means pulse-shapes the transmission signal which is the wideband signal, on the basis of the control performed by the pulse-shaping control means, so that spectral redundancy owing to cyclostationarity increases.