A transmission apparatus and method for transmitting data within a multi-carrier transmission system including two or more transmission apparatuses configured to transmit same data. To avoid destructive interferences the transmission apparatus includes a signal input configured to receive multi-carrier signals carrying data to be transmitted, a distortion unit configured to distort the multi-carrier signals by use of a distortion function including a phase parameter for differently modulating phase of the multi-carrier signals, the distortion function being different from distortion functions used by other transmission apparatuses, whose coverage areas overlap with the coverage area of the present transmission apparatus, by using a phase parameter different from the phase parameter used by the other transmission apparatuses, and a transmission unit configured to transmit the distorted multi-carrier signals as a transmission signal.