Digital signal processor for use in communication system in cabin of passenger aircraft, has generating unit for generating digital signal that is adapted for forming waveform to represent predetermined service signal and noise signal

摘要

The processor (401) has a generating unit (B) for generating a predeterminable digital signal (D) that is adapted for forming a waveform (W) to represent a predetermined service signal and a predetermined noise signal. The noise signal contains making signals for masking terrestrial base station signals, respectively. The service signal provides a preset service e.g. global system for mobile communication (GSM), Universal Mobile telecommunications system (UMTS) or wireless local area network (WLAN). Independent claims are also included for the following: (1) a communication system comprising digital signal processors (2) a method for operating a digital signal processor for a communication system.