TRANSMISSION METHOD AND SYSTEM USING AN ADAPTIVE AND PROGRAMMABLE HIERARCHICAL MODULATION

• US 20120154532A1
• Filed: 12/16/2011
• Published: 06/21/2012
• Est. Priority Date: 12/17/2010
• Status: Active Grant

• Current Assignee: Thales SA
• Original Assignee: Thales SA
• Inventors: GAYRARD, Jean-Didier, FARAJ, Zakariya, ARNAL, Fabrice
• Granted Patent: US 9,806,931 B2
• Time in Patent Office: Days
• US Class Current: 348/43
• CPC Class Codes: H04L 27/3488 Multiresolution systems

Abstract

A method for transmission of a signal simultaneously including a first stream of binary data and one or more other streams of binary data, the method including, in the following order: dynamic distribution of bits of the data streams between coders, with one coder per data stream; coding the distributed bits using the coders; dynamic distribution of the coded bits between hierarchical levels of a modulator; and hierarchical modulation using the modulator.

Claims

1. A method for transmission of a signal comprising simultaneously a first stream of binary data and one or more other streams of binary data, the method comprising, in the following order:

dynamic distribution of bits of the data streams between coders, with one coder per data stream;

coding the distributed bits using the coders;

dynamic distribution of the coded bits between hierarchical levels of a modulator; and

hierarchical modulation using the modulator.

2. The method for transmission of a signal according to claim 1, wherein parameters for the dynamic distribution of bits of the data streams and/or dynamic distribution of the coded bits are a function of the nature of the data streams, of their rates and/or of operating points and/or of time.

3. A method for reception of a signal transmitted by the transmission method according to claim 1, the method of reception comprising, in the following order:

hierarchical demodulation using a demodulator with one hierarchical level per data stream, in a reciprocal manner to the modulation;

dynamic distribution of the demodulated bits between decoders in a reciprocal manner to the routing, with one decoder per data stream;

decoding the bits distributed between the decoders using the decoders, in a reciprocal manner to the coding; and

dynamic distribution of the decoded streams into a first stream and one or more other streams of binary data in a reciprocal manner to the injection.

4. The method for transmission of a signal according to claim 1, wherein

the first stream of binary data is a high priority stream, and

the other streams of binary data are lower priority streams.

5. The method for transmission of a signal according to claim 4, wherein

the signal comprises a high priority stream and a lower priority stream,

the signal bears an HD TV signal which comprises a standard signal and an HD complement,

the high priority stream is dedicated to the standard signal, and

the lower priority stream is dedicated to the HD complement.

6. The method for transmission of a signal according to claim 4, wherein

the signal comprises a stream with high priority, a stream with medium priority and a stream with low priority,

the signal bears a 3D TV signal which comprises a standard signal, an HD complement and a 3D complement,

the stream with high priority is dedicated to the standard signal,

the stream with medium priority is dedicated to the HD complement, and

the stream with low priority is dedicated to the 3D complement.

15. The method for reception of a signal according to claim 3, wherein

the first stream of binary data is a high priority stream, and

the other streams of binary data are lower priority streams.

16. The method for reception of a signal according to claim 15, wherein

the signal comprises a high priority stream and a lower priority stream,

the signal bears an HD TV signal which comprises a standard signal and an HD complement,

the high priority stream is dedicated to the standard signal, and

the lower priority stream is dedicated to the HD complement.

17. The method for reception of a signal according to claim 15, wherein

the signal comprises a stream with high priority, a stream with medium priority and a stream with low priority,

the signal bears a 3D TV signal which comprises a standard signal, an HD complement and a 3D complement,

the stream with high priority is dedicated to the standard signal,

the stream with medium priority is dedicated to the HD complement, and

the stream with low priority is dedicated to the 3D complement.

7. A transmitter for a signal comprising simultaneously a first stream of binary data and or more other streams of binary data, the transmitter comprising:

an injector that dynamically distributes the bits of the data streams between coders that code the distributed bits, with one coder per data stream;

a router connected to the coders that dynamically distributes the coded bits between hierarchical levels of a hierarchical modulator, with one hierarchical level per data stream; and

a hierarchical modulator for the coded bits, connected to the router.

8. The transmitter for a signal according to claim 7, wherein the signal comprises two streams, and the transmitter comprises two coders of a channel coder type and a hierarchical modulator with two levels of the MSB and LSB type.

9. A receiver for a signal transmitted by a transmitter according to claim 7, the receiver comprising:

a hierarchical demodulator for the received signal, with one hierarchical level per data stream;

a de-router, connected to the hierarchical demodulator, that dynamically distributes the demodulated bits between decoders in a reciprocal manner to the router in the transmitter, with one decoder per data stream; and

a de-injector connected to the decoders, that dynamically distributes the decoded bits into a first stream of binary data and one or more other streams of binary data in a reciprocal manner to the injector in the transmitter.

10. The receiver for a signal according to claim 9, wherein the transmitted signal comprises two streams, and the receiver comprises two decoders of a channel decoder type and a hierarchical demodulator with two levels of the MSB and LSB type.

11. A transmission system for a signal comprising simultaneously one basic stream of binary data and one or more streams of complementary binary data equipped with at least one transmitter according to claim 7, and with at least one receiver comprising:

a hierarchical demodulator for the signal, with one hierarchical level per data stream;

a de-router, connected to the hierarchical demodulator, that dynamically distributes the demodulated bits between decoders in a reciprocal manner to the router in the transmitter, with one decoder per data stream; and

a de-injector connected to the decoders, that dynamically distributes the decoded bits into a first stream of binary data and one or more other streams of binary data in a reciprocal manner to the injector in the transmitter.

12. The transmission system for a signal according to claim 11, which is a satellite or terrestrial broadcast system.

13. The system according to claim 12, wherein

the signal comprises a high priority stream and a lower priority stream,

the signal bears an HD TV signal that comprises a standard signal and an HD complement,

the high priority stream is dedicated to the standard signal, and

the lower priority stream is dedicated to the HD complement.

14. The system according to claim 12, wherein

the signal comprises a stream with high priority, a stream with medium priority and a stream with low priority,

the signal bears a 3D TV signal which comprises a standard signal, an HD complement and a 3D complement,

the stream with high priority is dedicated to the standard signal,

the stream with medium priority is dedicated to the HD complement, and

the stream with low priority is dedicated to the 3D complement.