Transmitter for sending a digital broadcast signal in a broadcast area of a broadcast area of a single frequency network

摘要

Transmitter for sending a digital transmission signal in a sub-reception area of a reception area of a single frequency network, the digital transmission signal comprising at least one broadcast program and being transmitted as an OFDM signal, the digital transmission signal comprising OFDM frames following one another in time, each frame comprising at least one program symbol, wherein each program symbol is assigned to at least one broadcast program, and further comprises at least one empty symbol, wherein the empty symbol is designed to avoid in the sub-reception area of the transmitter the reception of a broadcast program which is transmitted by a neighboring transmitter in an adjacent sub-reception area, characterized in that, that the transmitter is adapted to derive a blank symbol in a manner that is equivalent to or equal to the following steps: a. Deriving a frequency spectrum for a program symbol which corresponds to the broadcast program of the neighboring transmitter b. Suppressing some of the carriers in the frequency spectrum of the program symbol, and c. Introducing the program symbol with the frequency spectrum thus suppressed as an empty symbol in an OFDM frame.