A transmission apparatus and a corresponding transmission method for transmitting data within a multi-carrier transmission system comprising two or more transmission apparatuses that are configured to transmit the same data. To avoid destructive interferences a transmission apparatus comprises 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 the phase of the multi-carrier signals wherein the distortion function is 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 that is 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.