DIGITAL SIGNAL PROCESSOR, COMMUNICATION DEVICE, COMMUNICATION SYSTEM AND METHOD FOR OPERATING A DIGITAL SIGNAL PROCESSOR

• US 20110228874A1
• Filed: 03/28/2011
• Published: 09/22/2011
• Est. Priority Date: 10/01/2008
• Status: Active Grant

• Current Assignee: Airbus Operations GmbH (Airbus SE)
• Original Assignee: Airbus Operations GmbH (Airbus SE)
• Inventors: Schirrmacher, Martin
• Granted Patent: US 8,743,999 B2
• Time in Patent Office: Days
• US Class Current: 375/295
• CPC Class Codes: H04B 7/18506 Communications with or from aircraft, i.e. aeronautical mobile service

Abstract

The present invention provides a digital signal processor, a communication system comprising such a digital signal processor and a method for operating such a digital signal processor. The digital signal processor for a communication system in an aircraft cabin of an aircraft comprises a provision means for providing a pre-determinable digital signal suitable for forming a respective wave form for mapping a respective pre-determined service signal and a pre-determined noise signal.

Claims

1. A digital signal processor for a communication system in an aircraft cabin of an aircraft, characterised in that a provision means is provided for provision of a predeterminable digital signal which is suitable for formation of a respective waveform for mapping a respective predetermined service signal and a predetermined noise signal.

2. The digital signal processor according to claim 1, wherein the provision means is set up to form the respective digital signal such that this is suitable for forming a respective waveform with a predeterminable bandwidth and with a predeterminable signal-to-noise ratio for masking the respective predetermined service signal and the respective predetermined noise signal.

3. The digital signal processor according to claim 1, wherein the provided broadband signal contains at least one masking signal, with the respective masking signal being suitable for masking a respective terrestrial base station signal which uses a respective predetermined frequency band.

4. The digital signal processor according to claim 1, wherein the respective service signal is suitable for provision of a predetermined service, such as GSM, UMTS or WLAN.

5. A communication system having:

a number of digital signal processors for provision of a respective digital signal according to claim 1; and

a transmission path which has at least one leaky line antenna, which is arranged in the aircraft cabin, for transmission of a respective waveform, which is formed as a function of the respective digital signal, into the aircraft cabin.

6. The communication system according to claim 5, wherein a software-defined radio device is provided, and comprises the number of digital signal processors.

9. A communication apparatus for a communication system in an aircraft cabin of an aircraft, having:

a plurality N of digital signal processors according to claim 1, each digital signal processor being set up to provide a predeterminable digital signal which is suitable for forming a respective waveform in a base band range for mapping at least one respective service signal and at least one respective noise signal;

a plurality M of front-end modules, each front-end module being set up at least to mix the respective waveform for forming an HF signal into a predetermined high-frequency range; and

a controllable switching device which switches at least one digital signal processor to at least one front-end module as a function of at least one control signal.

7. A method for operation of a digital signal processor for a communication system in an aircraft cabin of an aircraft, characterised in that the digital signal processor is set up such that it is suitable for provision of a predetermined digital signal, which is suitable for forming a respective waveform for mapping a respective predetermined service signal and a respective predetermined noise signal.

8. A computer program product which causes the method according to claim 7 to be carried out on a program-controlled device.