Digital signal processor, communication device, communication system and method for operating a digital signal processor

• US 8,743,999 B2
• Filed: 03/28/2011
• Issued: 06/03/2014
• 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
• Primary Examiner(s): Bayard, Emmanuel
• Application Number:
  US13/073,502
• Publication Number:
  US 20110228874A1
• Time in Patent Office: 1,163 Days
• Field of Search: 375/265, 375/295, 375/299
• 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 predeterminable 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 the digital signal processor is configured to provide 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 comprised in a high-frequency signal;

and

wherein the digital signal processor is configured to form the respective digital signal such that it 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 comprised in the high-frequency signal.

2. The digital signal processor according to either claim 1, wherein a 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.

3. 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.

4. 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.

5. The communication system according to claim 4, wherein a software-defined radio device is provided, and comprises the number of digital signal processors.

6. 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 comprised in a high-frequency signal,

wherein the respective digital signal is formed such that it 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 comprised in the high-frequency signal.