1. A transmission apparatus for transmitting data within a multi-carrier broadcast system, comprising: processing circuitry configured to map payload data of mapping input data streams onto a mapping output data stream having a channel frequency bandwidth for transmission in a multi-carrier broadcast system by receiving at least two mapping input data streams each being subdivided into data blocks carrying payload data, mapping the data blocks of said at least two mapping input data streams onto frames of said mapping output data stream, each frame covering a total channel frequency bandwidth of said channel frequency bandwidth, each frame comprising a payload portion, said payload portion comprising a plurality of data symbols and being segmented into data segments each covering a frequency bandwidth portion of said channel frequency bandwidth, wherein the processing circuitry is configured to map the data blocks of said at least two mapping input data streams onto the data symbols of said payload portion and select a MIMO mode of the data blocks for each data segment and/or for each mapping input data stream, such that said mapping output data stream includes at least one frame including two different MIMO modes for transmission within the transmission time of a single frame on at least two different data segments of said data segments each covering a frequency bandwidth portion of said channel frequency bandwidth, said two different MIMO modes selected from a SISO scheme, a MISO scheme, and a MIMO scheme, and outputting said mapping output data stream; and control transmission of said mapping output data stream.