Method and apparatus for transmitting high bandwidth signals with low bandwidth transponders

1. A method for transmitting a plurality of elementary data streams to a plurality of receivers, comprising the steps of:

generating M data streams comprising K multiplexed elementary data streams in a first entity wherein K≠T, comprising;

statistically multiplexing the K elementary data streams into a single intermediate data stream having a peak bit rate less than a sum of the peak bit rates of each of the K elementary data streams; and

generating the M data streams by demultiplexing the single intermediate data stream;

wirelessly transmitting the M data streams to a second entity;

generating N transmitter streams from the M data streams in the second entity by performing steps comprising:

multiplexing the M data streams in the second entity to generate a single data stream; and

demultiplexing the single data stream into N transmitter streams in the second entity;

transmitting each of the N transmitter streams to the plurality of receivers using an associated one of N broadcast sub-transmitters;

wherein:

each of the K multiplexed elementary data streams has an associated temporally varying bit rate BRD 1 (t), BRD 2 (t), . . . , BRD K (t);

the single intermediate data stream comprises a bit rate of

BRS

⁡

(

t

)

≥

∑

i

=

1

K

⁢

BRD

i

⁡

(

t

)

;

each of the N broadcast sub-transmitters has an associated maximum bit transmission rate of BRT 1 , BRT 2 , . . . , BRT N ; and

N is selected such that

⁢

⁢

∑

i

=

1

N

-

1

⁢

BRT

i

<

BRS

⁡

(

t

)

≤

∑

i

=

1

N

⁢

⁢

for all time t.

2. The method of claim 1 , wherein:

the method further comprises the steps of:

error correction encoding the single intermediate data stream; and

the M data streams are generated from the error correction encoded single intermediate data stream.

3. The method of claim 1 , wherein M=1 and N is an integer greater than or equal to two.

4. The method of claim 1 , wherein N=1 and M is an integer greater than or equal to two.

5. The method of claim 1 , wherein M=N and M and N are integers greater than one.

6. The method of claim 1 , wherein MSN and M and N are integers greater than one.

7. The method of claim 1 , wherein a bit rate of the single intermediate data stream exceeds the bit rate of any of the N broadcast sub-transmitters but does not exceed the combined bit rate of the N broadcast sub-transmitters.

8. The method of claim 1 , wherein

the second entity comprises a plurality of satellites comprising a first satellite and a second satellite;

a subset of the M data streams is transmitted to the first satellite and another subset of the remaining M data streams are transmitted to the second satellite.

9. The method of claim 1 , wherein the transmitter streams are multiplexed to recover the single data stream.

10. The method of claim 1 , wherein the N broadcast sub-transmitters each use a different, non-contiguous portions of a signal spectrum.

11. The method of claim 9 , wherein the recovered single data stream is forward error correction decoded.

12. The method of claim 10 , wherein the different portions of the signal spectrum comprise guard bands in the signal spectrum.

13. The method of claim 10 , wherein at least one of the N broadcast sub-transmitters has a different bandwidth than the other of the N broadcast sub-transmitters.

14. The method of claim 11 , wherein the recovered single data stream is demultiplexed to recover at least one of the K elementary data streams.

15. An apparatus for transmitting a plurality of elementary data streams to a plurality of receivers, comprising:

a signal distributor, for generating M data streams comprising K multiplexed elementary data streams wherein K≠M, comprising:

a statistical multiplexer, for statistically multiplexing the K elementary data streams into a single intermediate data stream having a peak bit rate less than a sum of the peak bit rates of each of the K elementary data streams; and

a demultiplexer for generating the M data streams from the single intermediate data stream;

a broadcast transmitter, having N broadcast sub-transmitters, the broadcast transmitter for wirelessly receiving the M data streams from the signal distributor, for generating N broadcast sub-transmitter data streams from the received M data streams, and transmitting the N broadcast sub-transmitter data streams via an associated one of the N broadcast sub-transmitters to the plurality of receivers;

wherein the broadcast transmitter generates the N transmitter streams from the M data streams by multiplexing the M data streams to generate a single data stream and demultiplexing the single data stream into N transmitter streams in the second entity;

wherein:

each of the K multiplexed elementary data streams has an associated temporally varying bit rate BRD 1 (t), BRD 2 (t), . . . , BRD K (t);

the single intermediate data stream comprises a bit rate of

BRS

⁡

(

t

)

≥

⁢

⁢

∑

i

=

1

K

⁢

BRD

i

⁡

(

t

)

;

each of the N broadcast sub-transmitters has an associated maximum bit transmission rate of BRT 1 , BRT 2 , . . . , BRT N ; and

N is selected such that

∑

i

=

1

N

-

1

⁢

BRT

i

<

BRS

⁡

(

t

)

≤

∑

i

=

1

N

⁢

⁢

BRT

i

for all time t.

16. The apparatus of claim 15 , wherein the signal distributor further comprises:

an encoder, for encoding the single intermediate data stream and providing the encoded single intermediate data stream to the demultiplexer.

17. The apparatus of claim 15 , wherein M=1 and N is an integer greater than or equal to two.

18. The apparatus of claim 15 , wherein N=1 and M is an integer greater than or equal to two.

19. The apparatus of claim 15 , wherein M=N and M and N are integers greater than one.

20. The apparatus of claim 15 , wherein M≠N and M and N are integers greater than one.

21. The apparatus of claim 15 , wherein a bit rate of the single intermediate data stream exceeds the bit rate of any of the N broadcast sub-transmitters but does not exceed the combined bit rate of the N broadcast sub-transmitters.

22. The apparatus of claim 15 , wherein:

the signal distributor comprises an uplink transmitter comprising a plurality of uplink sub transmitters;

the broadcast transmitter comprises a plurality of satellites comprising a first satellite and a second satellite; and

a subset of the M data streams is transmitted to the first satellite by a first subset of the plurality of uplink sub-transmitters and another subset of the remaining M data streams are transmitted to the second satellite by another subset of the plurality of uplink subtransmitters.

23. The apparatus of claim 15 , further comprising:

a multiplexer for multiplexing the N broadcast sub-transmitter streams to recover the single data stream; and

a demultiplexer, for demultiplexing the recovered single data stream to recover at least one of the K elementary data streams.

24. The apparatus of claim 15 , further comprising:

a multiplexer for multiplexing the N broadcast sub-transmitter streams to recover the single data stream; and

a decoder for decoding the recovered single data stream;

a demultiplexer, for demultiplexing the recovered single data stream to recover at least one of the K elementary data streams.

25. The apparatus of claim 15 , wherein the N broadcast sub-transmitters each use a different, non contiguous portion of a signal spectrum.

26. The apparatus of claim 25 , wherein the different portions of the signal spectrum comprise guard bands in the signal spectrum.

27. The apparatus of claim 25 , wherein the different portions of the signal spectrum comprise legacy bands and guard bands in the signal spectrum.

28. A method for transmitting a plurality of elementary data streams to a plurality of receivers, comprising the steps of:

generating M data streams comprising K multiplexed elementary data streams in a first entity, comprising;

statistically multiplexing the K elementary data streams into a single intermediate data stream having a peak bit rate less than a sum of the peak bit rates of each of the K elementary data streams; and

generating the M data streams by demultiplexing the single intermediate data stream;

wirelessly transmitting the M data streams to a second entity;

generating N transmitter streams from the M data streams in the second entity by performing steps comprising:

multiplexing the M data streams in the second entity to generate a single data stream; and

demultiplexing the single data stream into N transmitter streams in the second entity;

transmitting each of the N transmitter streams to the plurality of receivers using an associated one of N broadcast sub-transmitters;

wherein:

each of the K multiplexed elementary data streams has an associated temporally varying bit rate BRD 1 (t), BRD 2 (t), . . . , BRD K (t);

the single intermediate data stream comprises a bit rate of

BRS

⁡

(

t

)

≥

⁢

⁢

∑

i

=

1

K

⁢

BRD

i

⁡

(

t

)

;

each of the N broadcast sub-transmitters has an associated maximum bit transmission rate of BRT 1 , BRT 2 , . . . , BRT N ; and

N is selected such that

∑

i

=

1

N

-

1

⁢

BRT

i

<

BRS

⁡

(

t

)

≤

∑

i

=

1

N

⁢

⁢

⁢

⁢

BRT

i

for all time t.

29. The method of claim 28 , wherein:

the method further comprises the steps of:

error correction encoding the single intermediate data stream; and

the M data streams are generated from the error correction encoded single intermediate data stream.

30. The method of claim 28 , wherein

the second entity comprises a plurality of satellites comprising a first satellite and a second satellite;

a subset of the M data streams is transmitted to the first satellite and another subset of the remaining M data streams are transmitted to the second satellite.

31. The method of claim 28 , wherein the transmitter streams are multiplexed to recover the single data stream.

32. The method of claim 28 , wherein the N broadcast sub-transmitters each use a different, non-contiguous portions of a signal spectrum.

33. The method of claim 32 , wherein the different portions of the signal spectrum comprise guard bands in the signal spectrum.

34. The method of claim 32 , wherein at least one of the N broadcast sub-transmitters has a different bandwidth than the other of the N broadcast sub-transmitters.

35. The method of claim 34 , wherein the recovered single data stream is forward error correction decoded.

36. An apparatus for transmitting a plurality of elementary data streams to a plurality of receivers, comprising:

a signal distributor, for generating M data streams comprising K multiplexed elementary data streams, comprising:

a statistical multiplexer, for statistically multiplexing the K elementary data streams into a single intermediate data stream having a peak bit rate less than a sum of the peak bit rates of each of the K elementary data streams; and

a demultiplexer for generating the M data streams from the single intermediate data stream;

a broadcast transmitter, having N broadcast sub-transmitters, the broadcast transmitter for wirelessly receiving the M data streams from the signal distributor, for generating N broadcast sub-transmitter data streams from the received M data streams, and transmitting the N broadcast sub-transmitter data streams via an associated one of the N broadcast sub-transmitters to the plurality of receivers;

wherein:

the broadcast transmitter generates the N transmitter streams from the M data streams by multiplexing the M data streams to generate a single data stream and demultiplexing the single data stream into N transmitter streams in the second entity; and

each of the K multiplexed elementary data streams has an associated temporally varying bit rate BRD 1 (t), BRD 2 (t), . . . , BRD K (t);

the single intermediate data stream comprises a bit rate of

BRS

⁡

(

t

)

≥

∑

i

=

1

K

⁢

BRD

i

⁡

(

t

)

each of the N broadcast sub-transmitters has an associated maximum bit transmission rate of BRT 1 , BRT 2 , . . . , BRT N ; and

N is selected such that

∑

i

=

1

N

-

1

⁢

BRT

i

<

BRS

⁡

(

t

)

≤

∑

i

=

1

N

⁢

⁢

⁢

⁢

BRT

i

for all time t.

37. The method of claim 36 , wherein the recovered single data stream is demultiplexed to recover at least one of the K elementary data streams.

38. The apparatus of claim 36 , wherein the signal distributor further comprises:

an encoder, for encoding the single intermediate data stream and providing the encoded single intermediate data stream to the demultiplexer.

39. The apparatus of claim 36 , wherein:

the signal distributor comprises an uplink transmitter comprising a plurality of uplink sub transmitters;

the broadcast transmitter comprises a plurality of satellites comprising a first satellite and a second satellite; and

a subset of the M data streams is transmitted to the first satellite by a first subset of the plurality of uplink sub-transmitters and another subset of the remaining M data streams are transmitted to the second satellite by another subset of the plurality of uplink subtransmitters.

40. The apparatus of claim 36 , further comprising:

a multiplexer for multiplexing the N broadcast sub-transmitter streams to recover the single data stream; and

a demultiplexer, for demultiplexing the recovered single data stream to recover at least one of the K elementary data streams.

41. The apparatus of claim 36 , further comprising:

a multiplexer for multiplexing the N broadcast sub-transmitter streams to recover the single data stream; and

a decoder for decoding the recovered single data stream;

a demultiplexer, for demultiplexing the recovered single data stream to recover at least one of the K elementary data streams.

42. The apparatus of claim 36 , wherein the N broadcast sub-transmitters each use a different, non contiguous portion of a signal spectrum.

43. The apparatus of claim 42 , wherein the different portions of the signal spectrum comprise guard bands in the signal spectrum.

44. The apparatus of claim 42 , wherein the different portions of the signal spectrum comprise legacy bands and guard bands in the signal spectrum.