Ultra-wideband pulse modulation system and method

• US 20040174924A1
• Filed: 04/28/2003
• Published: 09/09/2004
• Est. Priority Date: 03/03/2003
• Status: Active Grant

• Current Assignee: Intellectual Ventures Holding 73 LLC (Intellectual Ventures LLC)
• Original Assignee: Pulse-Link Incorporated
• Inventors: Lakkis, Ismail, Bahreini, Yasaman
• Granted Patent: US 7,190,722 B2
• Time in Patent Office: Days
• US Class Current: 375/130
• CPC Class Codes: H04B 1/7174 Pulse generation in general H04L25/03834
• CPC Class Codes: H04B 1/7176 Data mapping, e.g. modulation

Abstract

An ultra-wideband pulse modulation system and method is provided. One method of the present invention includes transforming data into a ternary data set with data being represented with states of zero, positive one and negative one. The modulation and pulse transmission method of the present invention enables the simultaneous coexistence of the ultra-wideband pulses with conventional carrier-wave signals. The present invention may be used in wireless and wired communication networks such as hybrid fiber-coax networks. This Abstract is provided for the sole purpose of complying with the Abstract requirement rules that allow a reader to quickly ascertain the subject matter of the disclosure contained herein. This Abstract is submitted with the explicit understanding that it will not be used to interpret or to limit the scope or the meaning of the claims.

Claims

1. A method of communicating data, the method comprising the steps of:

receiving a plurality of data bits;

converting each of the plurality of data bits into either ones or a negative ones;

grouping the one or negative one bits into bit groups that include a zero; and

transmitting the bit groups by emitting a single ultra-wideband pulse.

2. The method of claim 1, wherein the step of converting the bits into either a one or a negative one comprises the steps of:

changing the plurality of data bits that are comprised of a plurality of ones and zeros into a plurality of data bits that are selectively comprised of ones, zeroes, and negative ones.

3. The method of claim 1, wherein the step of grouping the one or negative one bits into bit groups that include a zero comprises the steps of:

multiplying the plurality of one and negative one data bits by a transformation matrix.

4. The method of claim 1, wherein the step of grouping the one or negative one bits into bit groups that include a zero comprises the steps of:

using a look-up table that groups the one or negative one bits into bit groups that include a zero.

5. The method of claim 3, wherein the transformation matrix is selected from a group consisting of:

a Walsh matrix, a Walsh-Hadamard matrix, an orthogonal matrix, a 2×

2 Walsh matrix, a 4×

4 Walsh matrix, a Walsh matrix of order greater than 4, and a 2×

2 inverse fast Fourier transform matrix.

6. The method of claim 1, wherein the step of transmitting the bit groups by emitting a single ultra-wideband pulse comprises the steps of:

transmitting an ultra-wideband electromagnetic energy pulse comprising either a positive pulse or a negative pulse.

7. The method of claim 1, further including the step of:

receiving the ultra-wideband electromagnetic energy pulse comprising either a positive pulse or a negative pulse; and

assigning a data value to the ultra-wideband electromagnetic pulse based on an absence or presence of the pulse within a time bin and a polarity of the ultra-wideband electromagnetic pulse.

8. The method of claim 1, wherein the step of grouping the one or negative one bits into bit groups that include a zero comprises the step of grouping the one or negative one bits into two bit groups that include a zero.

9. The method of claim 1, wherein the step of grouping the one or negative one bits into bit groups that include a zero comprises the step of:

assembling the one or negative one bits data into a group selected from a group consisting of;

a 2-bit group, a 4-bit group, an 8-bit group, a 16-bit group, a 32-bit group, a 64-bit group and a 128-bit group.

10. The method of claim 1, wherein the step of converting each of the plurality of data bits into either a one or a negative one comprises any one of the steps of:

replacing each zero within the plurality of data bits with a negative one;

replacing each zero within the plurality of data bits with a positive one; and

replacing each one within the plurality of data bits with a negative one.

11. The method of claim 1, wherein the single ultra-wideband pulse is selected from a group consisting of:

an electromagnetic energy ultra-wideband pulse and an impulse radio pulse.

12. The method of claim 1, wherein the step of transmitting the bit groups by emitting a single ultra-wideband pulse comprises transmitting the bit groups by emitting a single ultra-wideband pulse through a media selected from a group consisting of:

air, an optical fiber ribbon, a fiber optic cable, a single mode fiber optic cable, a multi mode fiber optic cable, a twisted pair wire, an unshielded twisted pair wire, a plenum wire, a PVC wire, a coaxial cable, and an electrically conductive material.

13. The method of claim 1, wherein the single ultra-wideband pulse has a duration that can range between about 0.01 nanoseconds to about 1 millisecond.

14. A method of communicating data, the method comprising the steps of:

transmitting an ultra-wideband pulse, the ultra-wideband pulse representing data; and

representing an additional data bit by an absence of an ultra-wideband pulse.

15. The method of claim 14, wherein the ultra-wideband pulse comprises either a positive pulse or a negative pulse.

16. The method of claim 14, wherein the step of representing an additional data bit by an absence of an ultra-wideband pulse comprises a positive ultra-wideband pulse that does not include a negative pulse.

17. The method of claim 14, wherein the step of representing an additional data bit by an absence of an ultra-wideband pulse comprises a negative ultra-wideband pulse that does not include a positive pulse.

18. The method of claim 14, wherein the ultra-wideband pulse is selected from a group consisting of:

an electromagnetic energy ultra-wideband pulse and an impulse radio pulse.

19. The method of claim 14, wherein the ultra-wideband pulse has a duration that can range between about 0.01 nanoseconds to about 1 millisecond.

20. A method of communicating data, the method comprising the steps of:

means for providing a plurality of data bits;

means for converting each of the plurality of data bits into either a 1 or a −

1;

means for grouping the 1 or −

1 bits into two bit groups that include a 0; and

means for transmitting the two bit groups by emitting a single ultra-wideband pulse.

21. The method of claim 20, wherein the step of converting the bits into either a 1 or a −

1 comprises the steps of;

changing the plurality of data bits that are comprised of a plurality of ones (1) and a zeros (0) into a plurality of data bits that are selectively comprised of 1, 0 and −

1.

22. The method of claim 20, wherein the step of grouping the 1 or −

1 bits into two bit groups that include a 0 comprises the steps of;

multiplying the plurality of 1 and −

1 data bits by a transformation matrix.

23. The method of claim 22, wherein the transformation matrix is selected from a group consisting of:

a Walsh matrix, a Walsh-Hadamard matrix, and an orthogonal matrix.

24. The method of claim 20, wherein the step of grouping the 1 or −

1 bits into two bit groups that include a 0 comprises the steps of;

using a look-up table that groups the 1 or −

1 bits into two bit groups that include a 0.

25. The method of claim 20, wherein the step of transmitting the two bit groups by emitting a single ultra-wideband pulse comprises the steps of:

transmitting an ultra-wideband electromagnetic energy pulse comprising either a positive pulse or a negative pulse.

26. The method of claim 20, further including the step of:

receiving the ultra-wideband electromagnetic energy pulse comprising either a positive pulse or a negative pulse; and

assigning a data value to the ultra-wideband electromagnetic pulse based on an absence or presence of the pulse within a time bin and a polarity of the ultra-wideband electromagnetic pulse.

27. A computer program product for directing a general purpose digital computer to perform method steps to communicate data, the method steps comprising:

receiving a plurality of data bits;

converting each of the plurality of data bits into either ones or a negative ones;

grouping the one or negative one bits into bit groups that include a zero; and

transmitting the bit groups by emitting a single ultra-wideband pulse.

28. The computer program product of claim 27, wherein the step of converting the bits into either a one or a negative one comprises the steps of:

changing the plurality of data bits that are comprised of a plurality of ones and zeros into a plurality of data bits that are selectively comprised of ones, zeroes, and negative ones.

29. The computer program product of claim 27, wherein the step of grouping the one or negative one bits into bit groups that include a zero comprises the steps of:

multiplying the plurality of one and negative one data bits by a transformation matrix.

30. The computer program product of claim 29, wherein the transformation matrix is selected from a group consisting of:

a Walsh matrix, a Walsh-Hadamard matrix, an inverse fast Fourier transform matrix, an orthogonal matrix, a 2×

2 Walsh matrix, a 4×

4 Walsh matrix, and a Walsh matrix of order greater than 4.

31. The computer program product of claim 27, wherein the step of transmitting the bit groups by emitting a single ultra-wideband pulse comprises the steps of:

transmitting an ultra-wideband electromagnetic energy pulse comprising either a positive pulse or a negative pulse.

32. The computer program product of claim 27, further including the step of:

receiving the ultra-wideband electromagnetic energy pulse comprising either a positive pulse or a negative pulse; and

assigning a data value to the ultra-wideband electromagnetic pulse based on an absence or presence of the ultra-wideband electromagnetic pulse within a time bin and a polarity of the ultra-wideband electromagnetic pulse.

33. The computer program product of claim 27, wherein the step of grouping the one or negative one bits into bit groups that include a zero comprises the step of grouping the one or negative one bits into two bit groups that include a zero.

34. The computer program product of claim 27, wherein the step of grouping the one or negative one bits into bit groups that include a zero comprises the step of:

assembling the one or negative one bits data into a group selected from a group consisting of;

a 2-bit group, a 4-bit group, an 8-bit group, a 16-bit group, a 32-bit group, a 64-bit group and a 128-bit group.

35. The computer program product of claim 27, wherein the step of converting each of the plurality of data bits into either a one or a negative one comprises any one of the steps of:

replacing each zero within the plurality of data bits with a negative one;

replacing each zero within the plurality of data bits with a positive one; and

replacing each one within the plurality of data bits with a negative one.

36. The computer program product of claim 27, wherein the single ultra-wideband pulse is selected from a group consisting of:

an electromagnetic energy ultra-wideband pulse and an impulse radio pulse.

37. The computer program product of claim 27, wherein the step of transmitting the bit groups by emitting a single ultra-wideband pulse comprises transmitting the bit groups by emitting a single ultra-wideband pulse through a media selected from a group consisting of:

air, an optical fiber ribbon, a fiber optic cable, a single mode fiber optic cable, a multi mode fiber optic cable, a twisted pair wire, an unshielded twisted pair wire, a plenum wire, a PVC wire, a coaxial cable, and an electrically conductive material.

38. The computer program product of claim 27, wherein the single ultra-wideband pulse has a duration that can range between about 0.01 nanoseconds to about 1 millisecond.

39. A computer program product for directing a general purpose digital computer to perform method steps to communicate data, the method steps comprising:

transmitting an ultra-wideband pulse, the ultra-wideband pulse representing data; and

representing an additional data bit by an absence of an ultra-wideband pulse.

40. The computer program product of claim 39, wherein the ultra-wideband pulse comprises either a positive pulse or a negative pulse.

41. The computer program product of claim 39, wherein the step of representing an additional data bit by an absence of an ultra-wideband pulse comprises a positive ultra-wideband pulse that does not include a negative pulse.

42. The computer program product of claim 39, wherein the step of representing an additional data bit by an absence of an ultra-wideband pulse comprises a negative ultra-wideband pulse that does not include a positive pulse.

43. The computer program product of claim 39, wherein the ultra-wideband pulse is selected from a group consisting of:

an electromagnetic energy ultra-wideband pulse and an impulse radio pulse.

44. The computer program product of claim 39, wherein the ultra-wideband pulse has a duration that can range between about 0.01 nanoseconds to about 1 millisecond.