Enveloping for multilink communications

• US 10,333,900 B2
• Filed: 01/12/2016
• Issued: 06/25/2019
• Est. Priority Date: 01/12/2016
• Status: Active Grant

• Current Assignee: Spatial Digital Systems Inc
• Original Assignee: Spatial Digital Systems Inc
• Inventors: Chang, Donald C. D., Lee, Juo-Yu, Chen, Steve K.
• Primary Examiner(s): Oveissi, Mansour
• Application Number:
  US14/993,397
• Publication Number:
  US 20170201339A1
• Time in Patent Office: 1,260 Days
• CPC Class Codes: G06F 21/6245 Protecting personal data, e.g. for financial or medical purposes
• CPC Class Codes: H04L 27/00 Modulated-carrier systems
• CPC Class Codes: H04L 63/04 for providing a confidential data exchange among entities communicating through data packet networks
• CPC Class Codes: H04L 65/70 Media network packetisation

Abstract

Enveloping techniques using incoherent wavefront multiplexing (WF muxing or K-muxing) will enhance privacy protection on data communications. The disclosure relates to methods and architectures of packing or enveloping data using WF muxing, or K-muxing, for information transport via multiple communication links such as concurrently via multiple satellites, airborne platforms, wireless terrestrial links, and/or other wireless links. The multi-link communications may include the use of cloud transport of multiple WF-muxed data packages. It is focused to appearance of a digital envelop and reliability of enclosed data. The K-muxing on information digital streams before modulation in a transmitter shall provide enhanced data privacy and better availability. The WF multiplexed (WF muxed or K-muxed) information data streams will be individually and concurrently sent to the multiple links accordingly for data transport. The corresponding WF demuxing or K-demuxing will be performed on received K-muxed information digital stream after demodulation in a receiver. The terms of information data or digital information streams are used to differentiate them from those of data signals or digital signal streams. In a transmission, information data usually will be modulated by modulators and converted into data signals before being transmitted. Similarly in a receiver, a received digital signal stream is demodulated by a demodulator and become a digital information stream. The incoherent K-muxing and K-demuxing will be used for processing information data or digital information streams for the benefits of enhanced privacy and better availability. On the other hand, the coherent K-muxing and K-demuxing for processing data signals or digital signal streams will be used for power combining and/or dynamic resource allocations for communications channels.

Claims

1. A communications system between a source and a destination comprising a transmitter at the source and a communication connectivity, the transmitter comprising:

a preprocessor having multiple input and output ports and configured to perform a wavefront multiplexing (WFM) transform from multiple inputs at the multiple input ports to multiple outputs at the multiple output ports for enveloping; and

a candidate envelope folder configured to provide a digital envelope for the WFM transform;

wherein the WFM transform calculates a linear combination of the multiple inputs including the digital envelope such that a first output of the multiple outputs is substantially identical to the digital envelope, and

wherein the digital envelope is a known data file.

2. The communications system of claim 1 wherein the multiple inputs include a first input stream for an embedded digital information data file, and a second input stream for the digital envelope.

3. The communications system of claim 2 wherein the first output includes an enveloped data stream which is a weighted sum of the first and the second input streams.

4. The communications system of claim 1 wherein the WFM transform includes a magnification factor.

5. The communications system of claim 4 wherein the digital envelope is known by a user at the destination.

6. The communications system of claim 1 wherein the communication connectivity includes a satellite link.

7. The communications system of claim 1 wherein the communication connectivity includes links transponded by air platforms.

8. The communications system of claim 1 wherein the communication connectivity includes terrestrial links through IP cloud.

9. The communications system of claim 1 wherein the WFM transform is performed using an orthogonal matrix.

10. The communications system of claim 1 wherein the WFM transform is performed using a Hadamard matrix.

11. The communications system of claim 1 comprising an orthogonal matrix.

12. The communications system of claim 11 comprising Hadamard matrices.

13. A communications system between a source and a destination comprising a receiver in the destination and a communication connectivity, the receiver comprising:

a post-processor having multiple input and output ports and configured to perform a wavefront demultiplexing (WFD) transform from multiple inputs at the multiple input ports to multiple outputs at the multiple output ports for de-enveloping, the multiple inputs including an enveloped data stream of an original input stream; and

a candidate envelope folder configured to provide a digital envelope for the WFD transform;

wherein the WFD transform calculates a linear combination of the multiple inputs including the digital envelope such that a first output of the multiple outputs is substantially identical to the original input stream.

14. The communications system of claim 13 wherein the multiple inputs include a first input stream for the enveloped data stream, and a second input stream for the digital envelope.

15. The communications system of claim 14 wherein the first output is a weighted sum of the first and the second input streams.

16. The communications system of claim 14 wherein the WFD transform includes a magnification factor.

17. The communications system of claim 14 wherein a second output of the multiple outputs is grounded.

18. The communications system of claim 13 wherein the multiple inputs include two received streams from two relay links.

19. The communications system of claim 13 wherein the WFD transform includes a Hadamard matrix.

20. The communications system of claim 13 wherein the communication connectivity includes a satellite link.