IP Library › Granted Patent US 7,535,819

Granted Patent B1

US 7,535,819 · App. 10/948,615 · Granted May 19, 2009

Multiband OFDM system with mapping

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Quick Facts

Patent No.: US 7,535,819
App. No.: 10/948,615
Granted: May 19, 2009
Kind: B1

External Links

USPTO Patent Center↗ Full Patent PDF↗

Abstract

A method of improving frequency diversity of a signal that includes a plurality of orthogonal frequency division multiplexing (OFDM) symbols comprises receiving an input data sequence, mapping the input data sequence to a transmission data sequence, wherein the mapping includes performing a mapping operation and generating an OFDM symbol using the transmission data sequence. An orthogonal frequency division multiplexing (OFDM) transmitter comprises an interface configured to receive an input data sequence, and a processor configured to perform a mapping operation, to map the input data sequence to a transmission data sequence wherein the mapping includes performing the mapping operation, and to generate an OFDM symbol using the transmission data sequence.

Claims (2151)

1. A method of improving frequency diversity of a signal that includes a plurality of orthogonal frequency division multiplexing (OFDM) symbols, comprising:

receiving an input data sequence;

mapping the input data sequence to a first transmission data sequence, wherein the mapping includes performing a first mapping operation;

generating a first OFDM symbol using the first transmission data sequence;

mapping the input data sequence to a second transmission data sequence, including by performing a second mapping operation;

generating a second OFDM symbol using the second transmission data sequence; and

using a transmitter to transmit the first and/or second OFDM symbol using a three-band frequency hopping pattern and wherein mapping the input data sequence to the first and/or second transmission data sequence include(s) using a data pattern of

1 st

2 nd

3 rd

1 st

2 nd

3 rd

band

b 0

b 1

b 2

b 3

b 4

b 5

b 6

b 7

b 8

b 54

b 55

b 56

b 57

b 58

b 59

b 597

b 598

b 599

b 599 .

2. A method as recited in claim 1 , wherein the first and/or second mapping operation further includes repetition, shift, reverse, shift-plus-reverse or reverse-plus-shift.

3. A method as recited in claim 2 , wherein shift includes cyclic shift.

4. A method as recited in claim 1 , further comprising applying an Inverse Fourier Transform to the first and/or second transmission data sequence.

5. A method as recited in claim 1 , wherein using the data pattern includes interleaving the input data sequence.

6. A method as recited in claim 1 , further comprising mapping the first transmission data sequence to a third transmission data sequence.

7. A method as recited in claim 1 , further comprising repeating the first transmission data sequence in a third OFDM symbol.

8. A method of improving frequency diversity of a signal that includes a plurality of orthogonal frequency division multiplexing (OFDM) symbols, comprising:

receiving an input data sequence;

mapping the input data sequence to a first transmission data sequence wherein the mapping includes performing a first mapping operation;

generating a first OFDM symbol using the first transmission data sequence;

mapping the input data sequence to a second transmission data sequence, including by performing a second mapping operation;

generating a second OFDM symbol using the second transmission data sequence; and

1st

2nd

3rd

1st

2nd

3rd

1st

2nd

3rd

1st

2nd

3rd

band

b 0

b 1

b 2

b 3

b 4

b 5

b 6

b 7

b 8

b 54

b 55

b 56

b 57

b 58

b 59

b 597

b 598

b 599

b 599 .

9. A method of improving frequency diversity of a signal that includes a plurality of orthogonal frequency division multiplexing (OFDM) symbols, comprising:

receiving an input data sequence;

mapping the input data sequence to a first transmission data sequence, wherein the mapping includes performing a first mapping operation;

generating a first OFDM symbol using the first transmission data sequence;

mapping the input data sequence to a second transmission data sequence, including by performing a second mapping operation;

generating a second OFDM symbol using the second transmission data sequence; and

1st

2nd

3rd

1st

2nd

3rd

1st

2nd

3rd

1st

2nd

3rd

band

b 0

b 597

b 0

b 597

b 1

b 598

b 1

b 598

b 2

b 599

b 2

b 599

b 3

b 594

b 3

b 594

b 4

b 595

b 4

b 595

b 5

b 596

b 5

b 596

b 6

b 591

b 6

b 591

b 7

b 592

b 7

b 592

b 8

b 593

b 8

b 593

b 54

b 543

b 54

b 543

b 55

b 544

b 55

b 544

b 56

b 545

b 56

b 546

b 57

b 540

b 57

b 540

b 58

b 541

b 58

b 541

b 59

b 542

b 59

b 542

b 597

b 0

b 597

b 0

b 598

b 1

b 598

b 1

b 599

b 2

b 599

b 2 .

10. A method of improving frequency diversity of a signal that includes a plurality of orthogonal frequency division multiplexing (OFDM) symbols, comprising:

receiving an input data sequence;

mapping the input data sequence to a first transmission data sequence, wherein the mapping includes performing a first mapping operation;

generating a first OFDM symbol using the first transmission data sequence;

mapping the input data sequence to a second transmission data sequence, including by performing a second mapping operation;

generating a second OFDM symbol using the second transmission data sequence; and

1st

2nd

3rd

1st

2nd

3rd

1st

2nd

3rd

1st

2nd

3rd

band

b 0

b 597

b 567

b 537

b 1

b 598

b 568

b 538

b 2

b 599

b 569

b 539

b 30

b 0

b 597

b 31

b 1

b 598

b 32

b 2

b 599

b o

b 1

b 2

b 3

b 0

b 4

b 1

b 5

b 2

b 3

b 4

b 5

b 3

b 4

b 5

b 6

b 3

b 7

b 4

b 8

b 5

b 6

b 7

b 8

b 6

b 7

b 8

b 9

b 6

b 10

b 7

b 11

b 8

b 9

b 10

b 11

b 9

b 10

b 11

b 12

b 9

b 13

b 10

b 14

b 11

b 12

b 13

b 14

b 12

b 13

b 14

b 12

b 13

b 14

b 51

b 52

b 53

b 51

b 52

b 53

b 51

b 52

b 53

b 54

b 51

b 55

b 52

b 56

b 53

b 54

b 55

b 56

b 54

b 55

b 56

b 57

b 54

b 58

b 55

b 59

b 56

b 567

b 537

b 568

b 538

b 569

b 539

b 597

b 567

b 537

b 507

b 598

b 568

b 538

b 508

b 599

b 569

b 539

b 509 .

11. A method of improving frequency diversity of a signal that includes a plurality of orthogonal frequency division multiplexing (OFDM) symbols, comprising:

receiving an input data sequence;

mapping the input data sequence to a first transmission data sequence, wherein the mapping includes performing a first mapping operation;

generating a first OFDM symbol using the first transmission data sequence;

mapping the input data sequence to a second transmission data sequence, including by performing a second mapping operation;

generating a second OFDM symbol using the second transmission data sequence; and

1st

2nd

3rd

1st

2nd

3rd

1st

2nd

3rd

1st

2nd

3rd

band

b 0

b 567

b 597

b 30

b 1

b 568

b 598

b 31

b 2

b 569

b 599

b 32

b 537

b 567

b 60

b 538

b 568

b 61

b 539

b 569

b 62

b 3

b 564

b 33

b 4

b 565

b 34

b 5

b 566

b 35

b 564

b 565

b 566

b 6

b 561

b 36

b 7

b 562

b 37

b 8

b 563

b 38

b 561

b 562

b 563

b 9

b 558

b 39

b 10

b 559

b 40

b 11

b 560

b 41

b 558

b 559

b 560

b 12

b 555

b 42

b 13

b 556

b 43

b 14

b 557

b 44

b 594

b 570

b 27

b 595

b 571

b 28

b 596

b 572

b 29

b 570

b 571

b 572

b 567

b 0

b 597

b 568

b 1

b 598

b 569

b 2

b 599

b 597

b 0

b 598

b 1

b 599

b 2

b 2 .

12. An orthogonal frequency division multiplexing (OFDM) transmitter comprising:

an interface configured to receive an input data sequence;

a processor coupled to the interface, configured to:

map the input data sequence to a first transmission data sequence, wherein the mapping includes performing a first mapping operation;

generate a first OFDM symbol using the first transmission data sequence;

map the input data sequence to a second transmission data sequence, including by performing a second mapping operation; and

generate a second OFDM symbol using the second transmission data sequence; and

a transmitter configured to transmit the first and/or second OFDM symbol using a three-band frequency hopping pattern and wherein the processor is configured to map the input data sequence to the first and/or second transmission data sequence by using a data pattern of

1st

2nd

3rd

1st

2nd

3rd

1st

2nd

3rd

1st

2nd

3rd

band

b 0

b 1

b 2

b 3

b 4

b 5

b 6

b 7

b 8

b 54

b 55

b 56

b 57

b 58

b 59

b 597

b 598

b 599

b 599 .

13. An orthogonal frequency division multiplexing (OFDM) transmitter comprising:

an interface configured to receive an input data sequence;

a processor coupled to the interface, configured to:

map the input data sequence to a first transmission data sequence, wherein the mapping includes performing a first mapping operation;

generate a first OFDM symbol using the first transmission data sequence;

map the input data sequence to a second transmission data sequence, including by performing a second mapping operation; and

generate a second OFDM symbol using the second transmission data sequence; and

1 st

2 nd

3 rd

1 st

2 nd

3 rd

band

b 0

b 1

b 2

b 3

b 4

b 5

b 6

b 7

b 8

b 54

b 55

b 56

b 57

b 58

b 59

b 597

b 598

b 599

b 599 .

14. An OFDM transmitter as recited in claim 13 , wherein the first and/or second mapping operation further includes repetition, shift, reverse, shift-plus-reverse or reverse-plus-shift.

15. An OFDM transmitter as recited in claim 14 , wherein shift includes cyclic shift.

16. An OFDM transmitter as recited in claim 13 , wherein the processor is further configured to apply an Inverse Fourier Transform to the first and/or second transmission data sequence.

17. An OFDM transmitter as recited in claim 13 , wherein the processor is configured to use the data pattern by interleaving the input data sequence.

18. An OFDM transmitter as recited in claim 13 , wherein processor is further configured to map the first transmission data sequence to a third transmission data sequence.

19. An OFDM transmitted as recited in claim 13 , wherein processor is further configured to repeat the first transmission data sequence in a third OFDM symbol.

20. An orthogonal frequency division multiplexing (OFDM) transmitter comprising:

an interface configured to receive an input data sequence;

a processor coupled to the interface, configured to:

map the input data sequence to a first transmission data sequence, wherein the mapping includes performing a first mapping operation;

generate a first OFDM symbol using the first transmission data sequence;

map the input data sequence to a second transmission data sequence, including by performing a second mapping operation; and

generate a second OFDM symbol using the second transmission data sequence; and

1st

2nd

3rd

1st

2nd

3rd

1st

2nd

3rd

1st

2nd

3rd

band

b 0

b 597

b 0

b 597

b 1

b 598

b 1

b 598

b 2

b 599

b 2

b 599

b 3

b 594

b 3

b 594

b 4

b 595

b 4

b 595

b 5

b 596

b 5

b 596

b 6

b 591

b 6

b 591

b 7

b 592

b 7

b 592

b 8

b 593

b 8

b 593

b 54

b 543

b 54

b 543

b 55

b 544

b 55

b 544

b 56

b 545

b 56

b 545

b 57

b 540

b 57

b 540

b 58

b 541

b 58

b 541

b 59

b 542

b 59

b 542

b 597

b 0

b 597

b 0

b 598

b 1

b 598

b 1

b 599

b 2

b 599

b 2 .

21. An orthogonal frequency division multiplexing (OFDM) transmitter comprising:

an interface configured to receive an input data sequence;

a processor coupled to the interface, configured to:

map the input data sequence to a first transmission data sequence, wherein the mapping includes performing a first mapping operation;

generate a first OFDM symbol using the first transmission data sequence;

map the input data sequence to a second transmission data sequence, including by performing a second mapping operation; and

generate a second OFDM symbol using the second transmission data sequence; and

1st

2nd

3rd

1st

2nd

3rd

1st

2nd

3rd

1st

2nd

3rd

band

b 0

b 597

b 567

b 537

b 1

b 598

b 568

b 538

b 2

b 599

b 569

b 539

b 30

b 0

b 597

b 31

b 1

b 598

b 32

b 2

b 599

b 0

b 1

b 2

b 3

b 0

b 4

b 1

b 5

b 2

b 3

b 4

b 5

b 3

b 4

b 5

b 6

b 3

b 7

b 4

b 8

b 5

b 6

b 7

b 8

b 6

b 7

b 8

b 9

b 6

b 10

b 7

b 11

b 8

b 9

b 10

b 11

b 9

b 10

b 11

b 12

b 9

b 13

b 10

b 14

b 11

b 12

b 13

b 14

b 12

b 13

b 14

b 12

b 13

b 14

b 51

b 52

b 53

b 51

b 52

b 53

b 51

b 52

b 53

b 54

b 51

b 55

b 52

b 56

b 53

b 54

b 55

b 56

b 54

b 55

b 56

b 57

b 54

b 58

b 55

b 59

b 56

b 567

b 537

b 568

b 538

b 569

b 539

b 597

b 567

b 537

b 507

b 598

b 568

b 538

b 508

b 599

b 569

b 539

b 509 .

22. An orthogonal frequency division multiplexing (OFDM) transmitter comprising:

an interface configured to receive an input data sequence;

a processor coupled to the interface, configured to:

map the input data sequence to a first transmission data sequence, wherein the mapping includes performing a first mapping operation;

generate a first OFDM symbol using the first transmission data sequence;

map the input data sequence to a second transmission data sequence, including by performing a second mapping operation; and

generate a second OFDM symbol using the second transmission data sequence; and

1st

2nd

3rd

1st

2nd

3rd

1st

2nd

3rd

1st

2nd

3rd

band

b 0

b 567

b 597

b 30

b 1

b 568

b 598

b 31

b 2

b 569

b 599

b 32

b 537

b 567

b 60

b 538

b 568

b 61

b 539

b 569

b 62

b 3

b 564

b 33

b 4

b 565

b 34

b 5

b 566

b 35

b 564

b 565

b 566

b 6

b 561

b 36

b 7

b 562

b 37

b 8

b 563

b 38

b 561

b 562

b 563

b 9

b 558

b 39

b 10

b 559

b 40

b 11

b 560

b 41

b 558

b 559

b 560

b 12

b 555

b 42

b 13

b 556

b 43

b 14

b 557

b 44

b 594

b 570

b 27

b 595

b 571

b 28

b 596

b 572

b 29

b 570

b 571

b 572

b 567

b 0

b 597

b 568

b 1

b 598

b 569

b 2

b 599

b 597

b 0

b 598

b 1

b 599

b 2

b 2 .

Assignments (4)

SECURITY AGREEMENT Recorded Oct 28, 2010

From: VEEBEAM CORPORATION

To: BLUECREST VENTURE FINANCE MASTER FUND LIMITED

Reel/Frame 025214/0089 →

CHANGE OF NAME Recorded Oct 18, 2010

From: STACCATO COMMUNICATIONS, INC.

To: VEEBEAM CORPORATION

Reel/Frame 025150/0187 →

ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 4, 2005

From: STACCATO COMMUNICATIONS, INC.

To: SAMSUNG ELECTRONICS CO., LTD. (SAIT); STACCATO COMMUNICATIONS, INC.

Reel/Frame 016149/0813 →

ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 6, 2005

From: LARSSON, TORBJORN; KUMAR, NISHANT

To: STACCATO COMMUNICATION, INC.

Reel/Frame 015553/0093 →