Carrierless ultra wideband wireless signals for conveying data

• US 20030162498A1
• Filed: 11/18/2002
• Published: 08/28/2003
• Est. Priority Date: 12/12/1997
• Status: Active Grant

• Current Assignee: North Star Innovations Inc. (Wi-LAN Inc.)
• Original Assignee: Freescale Semiconductor, Inc. (NXP Semiconductors NV)
• Inventors: McCorkle, John W., Miller, Timothy R., Rofheart, Martin
• Granted Patent: US 6,909,877 B2
• Time in Patent Office: Days
• US Class Current: 375/259
• 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 conveying digital information with carrierless ultra wideband wireless signals, comprising:

encoding the digital information into wavelets each having predetermined shapes, the shapes being at least one of bi-phase modulated, quad-phase modulated, multilevel bi-phase modulated, and multilevel quad-phase modulated;

transmitting a carrierless ultra wideband waveform via an antenna, the ultra wideband waveform including the wavelets;

receiving the carrierless ultra wideband waveform with an antenna; and

decoding the digital information from the wavelets included in the carrierless ultra wideband waveform received in the receiving step.

2. A method for conveying digital information with carrierless ultra wideband wireless signals, as recited in claim 1, wherein the shapes comprise pulses suitable for a pulse position modulation scheme.

3. A method for conveying digital information with carrierless ultra wideband wireless signals, as recited in claim 1, wherein the digital information comprises data bits.

4. A method for conveying digital information with carrierless ultra wideband wireless signals, as recited in claim 1, wherein the digital information comprises control data.