Patent ID: 7151805

Claim:
An arrangement for generating an I/Q signal for an I/Q modulator using a modulation encoder, the arrangement comprising: a modulation encoder including: an encoding and mapping unit; a digital base-band filter whose filter properties are adjustable, said digital base-band filter disposed after said encoding and mapping unit; a digital modulation format converter disposed after said base-band filter; an interpolation filter disposed after said modulation format converter; a digital/analog converter disposed after said interpolation filter; an analog low-pass filter disposed after said digital/analog converter; and at least one adder disposed after said encoding and mapping unit and before said digital/analog converter, wherein, in said modulation encoder, corresponding digital I/Q values are generated from a first digital input data stream and the corresponding analog I/Q signals are generated therefrom after digital/analog conversion, and at least one modulation generator in which calculated digital I/Q values or digital I/Q values generated from a further digital input data stream are generated, wherein the digital I/Q values of the modulation encoder and the digital I/Q values of the modulation generator are added via said at least one adder.