High bandwidth data transport system

• US 8,451,879 B2
• Filed: 10/31/2007
• Issued: 05/28/2013
• Est. Priority Date: 10/29/2007
• Status: Active Grant

• Current Assignee: Lightwaves Systems, Inc.
• Original Assignee: Lightwaves Systems, Inc.
• Inventors: Kennedy, Philip T., Gerke, Joseph A., Snyder, David M., Stanford, Jon G., Song, Xuejie, Probst, Gregory P.
• Primary Examiner(s): Torres, Juan A
• Application Number:
  US11/932,459
• Publication Number:
  US 20090110030A1
• Time in Patent Office: 2,036 Days
• Field of Search: 375/130, 375/257
• US Class Current: 375/130
• CPC Class Codes: H04B 1/71635 Transmitter aspects H04B1/7174 takes precedence
• CPC Class Codes: H04B 2203/545 Audio/video application, e.g. interphone
• CPC Class Codes: H04B 3/54 Systems for transmission via power distribution lines

Abstract

A device for sending and receiving ultra wideband communications over a guided medium includes a line interface configured for electrical communication to the guided medium and adapted for interfacing with the guided medium, an ultra wideband impulse transmitter electrically connected to the line interface for transmitting amplitude modulated ultra wideband impulses over the guided medium, and an ultra wideband receiver electrically connected to the line interface for receiving amplitude modulated ultra wideband impulses over the guided medium.

Claims

1. A device for ultra wideband communications over a guided medium, comprising:

a line interface configured for electrical communication to the guided medium and adapted for interfacing with the guided medium;

an ultra wideband impulse transmitter electrically connected to the line interface for transmitting amplitude modulated ultra wideband impulses over the guided medium; and

an ultra wideband receiver electrically connected to the line interface for receiving amplitude modulated ultra wideband impulses over the guided medium;

wherein the device is adapted for preparing data for transmission using the ultra wideband impulse transmitter by;

(a) determining bit loading per frequency bin based on channel estimation data to create data symbols;

(b) performing a Fast Fourier Transform (FFT) on an array of the data symbols;

(c) mapping FFT data output sub-channel to a frequency bin to provide frequency mapped data;

(d) performing an Inverse Fast Fourier Transform (IFFT) on the frequency mapped data to provide IFFT frequency mapped data suitable for transmission using one-dimensional amplitude modulated ultra wideband impulses representing the IFFT frequency mapped data; and

wherein the device is adapted for (a) recovering data from the amplitude modulated ultra wideband impulses received by the ultra wideband receiver;

(b) performing a FFT on the data;

(c) mapping frequency to sub-channel to provide mapped data;

(d) equalizing the mapped data by sub-channel to provide equalized mapped data;

(e) performing an IFFT on the equalized mapped data to provide an IFFT output; and

(f) mapping the IFFT output to data symbols to thereby provide for recovering information communicated over the guided medium to the ultra wideband receiver.

2. The device of claim 1 wherein the array of the data symbols is interleaved.

3. The device of claim 1 wherein the guided medium is a coaxial cable.

4. The device of claim 1 wherein the guided medium is a twisted pair wire.

5. The device of claim 1 wherein the guided medium is a power line.

6. The device of claim 1 wherein the ultra wideband communications communicate data selected from the group consisting of telephony data, digital video data, digital television data, Internet data, and audio data.