Method for conveying application data with carrierless ultra wideband wireless signals

• US 6,850,733 B2
• Filed: 10/11/2002
• Issued: 02/01/2005
• Est. Priority Date: 12/11/1998
• Status: Expired due to Term

• Current Assignee: North Star Innovations Inc. (Wi-LAN Inc.)
• Original Assignee: Freescale Semiconductor, Inc. (NXP Semiconductors NV)
• Inventors: Rofheart, Martin, McCorkle, John W.
• Primary Examiner(s): Trinh, Sonny
• Application Number:
  US10/268,666
• Publication Number:
  US 20030054764A1
• Time in Patent Office: 844 Days
• Field of Search: 455/41.2, 455/23, 455/118, 455/39, 455/62, 455/454, 455/91, 455/130, 375/219, 375/266, 375/295, 375/271, 375280-283, 375/286, 375/256, 370/351, 370/352
• US Class Current: 455/41.2
• CPC Class Codes: H04B 1/7172 Pulse shape in general H04L25/03834
• CPC Class Codes: H04B 1/7176 Data mapping, e.g. modulation
• CPC Class Codes: H04L 25/4902 Pulse width modulation; Pulse position modulation
• CPC Class Codes: H04L 27/0004 using wavelets

Abstract

A method for conveying application data via carrierless ultra wideband wireless signals, and signals embodied in a carrierless ultra wideband waveform. Application data is encoded into wavelets that are transmitted as a carrierless ultra wideband waveform. The carrierless ultra wideband waveform is received by an antenna, and the application data is decoded from the wavelets included in the waveform. The waveforms of the signals include wavelets that have a predetermined shape that is used to modulate the data. The signals may convey, for example, Web pages and executable programs between mobile devices. The signals are low power and can penetrate obstructions making them favorable for use with a wireless node of a network.

Claims

1. A method for receiving digital information in an ultra wideband wireless signal, comprising:

receiving an ultra wideband waveform via an antenna, the ultra wideband waveform including a plurality of signal wavelets; and

decoding the plurality of signal wavelets into the digital information,

wherein the plurality of signal wavelets comprises a plurality of first wavelets having a first wavelet shape, and a plurality of second wavelets having a second wavelet shape that is different from the first wavelet shape.

2. A method for receiving digital information in an ultra wideband wireless signal, as recited in claim 1, wherein the second wavelet shape is equivalent to an inverted first wavelet shape.

3. A method for receiving digital information in an ultra wideband wireless signal, as recited in claim 1, wherein the first wavelet shape is one of a Gaussian function and a sinusoidal function.

4. A method for receiving digital information in an ultra wideband wireless signal, as recited in claim 1, wherein the plurality of signal wavelets further comprises a plurality of third wavelets having a third wavelet shape.

5. A method for receiving digital information in an ultra wideband wireless signal, as recited in claim 4,

wherein the second wavelet shape is equivalent to an inverted first wavelet shape, and

wherein the third wavelet shape is equal to the first wavelet shape multiplied in amplitude by an integer.

6. A method for receiving digital information in an ultra wideband wireless signal, as recited in claim 1, wherein each of the plurality of the signal wavelets represents N bits of the digital information, N being an integer greater than zero.

7. A method for receiving digital information in an ultra wideband wireless signal, as recited in claim 1, wherein each bit of the digital information is represented by two or more of the plurality of the signal wavelets.

8. A method for receiving digital information in an ultra wideband wireless signal, as recited in claim 1, wherein the method is implemented in an integrated circuit.

9. A method for receiving digital information in an ultra wideband wireless signal, as recited in claim 1, wherein the decoding of the plurality of signal wavelets into the digital information comprises correlating each of the plurality of signal wavelets with one or more locally-generated wavelets.

10. A device for receiving digital information in an ultra wideband wireless signal, comprising:

a reception path configured to receive a plurality of signal wavelets as ultra wideband energy, each of the plurality of signal wavelets having one of M different wavelet shapes;

a decoder configured to receive the plurality of signal wavelets and to generate a plurality of state indicators representing a plurality of bits of the digital information,

wherein each of the plurality of state indicators is indicative of an actual wavelet shape of one or more of the plurality of signal wavelets,

wherein M is an integer greater than one.

11. A device for receiving digital information in an ultra wideband wireless signal, as recited in claim 10, wherein the M different wavelet shapes include a first wavelet shape and a second wavelet shape equivalent to an inverted first wavelet shape.

12. A device for receiving digital information in an ultra wideband wireless signal, as recited in claim 11, wherein the first wavelet shape is one of a Gaussian function and a sinusoidal function.

13. A device for receiving digital information in an ultra wideband wireless signal, as recited in claim 11, wherein the M different wavelet shapes further includes a third wavelet shape equivalent to the first wavelet shape multiplied in amplitude by an integer.

14. A device for receiving digital information in an ultra wideband wireless signal, as recited in claim 10, wherein the reception path comprises an ultra wideband antenna.

15. A device for receiving digital information in an ultra wideband wireless signal, as recited in claim 10, wherein the decoder comprises a correlator configured to receive the plurality of signal wavelets and one or more locally-generated wavelets, and to generate a plurality of correlation values as the plurality of corresponding state indicators.

16. A device for receiving digital information in an ultra wideband wireless signal, as recited in claim 15, further comprising a controller for receiving the plurality of corresponding state indicators and generating a bit signal containing the plurality of bits of the digital information.

17. A device for receiving digital information in an ultra wideband wireless signal, as recited in claim 10, wherein the state indicators directly indicate values of the plurality of bits of the digital information.

18. A device for receiving digital information in an ultra wideband wireless signal, as recited in claim 10, wherein each of the plurality of the signal wavelets represents N bits of the plurality of bits of digital information, N being an integer greater than zero.

19. A device for receiving digital information in an ultra wideband wireless signal, as recited in claim 10, wherein each bit of the digital information is represented by two or more of the plurality of the signal wavelets.

20. A method for receiving digital information in an ultra wideband wireless signal, comprising:

receiving an ultra wideband waveform via an antenna, the ultra wideband waveform including a plurality of signal wavelets;

correlating the plurality of signal wavelets with one or more locally-generated wavelets to create a plurality of correlation values; and

determining the digital information based on the plurality of correlation values,

wherein the plurality of signal wavelets comprises a plurality of first wavelets having a first wavelet shape, and a plurality of second wavelets having a second wavelet shape that is different from the first wavelet shape.