Application of orbital angular momentum to Fiber, FSO and RF

Patent metadata

Field	Value
Publication number	US-11245486-B2
Application number	US-201514882085-A
Country	US
Kind code	B2
Filing date	Oct 13, 2015
Priority date	Oct 13, 2014
Publication date	Feb 8, 2022
Grant date	Feb 8, 2022

Abstract

A communications system receives a plurality of input data streams and applies a different orthogonal function to each of the plurality of input data streams. The system processes each of the plurality of input data streams to spatially locate a first group of the plurality of input data streams onto a first carrier signal and to spatially locate a second group of the plurality of input data streams onto a second carrier signal. The system temporally locates the first carrier signal and the second carrier signal onto a third carrier signal and transmits the third carrier signal over a communications link.

First claim

What is claimed is:

1. A communications system, comprising
first signal processing circuitry for receiving a plurality of input data streams and applying a different orbital angular momentum to each of the plurality of input data streams;
wherein the first signal processing circuitry further includes quantum level overlay (QLO) processing circuitry for applying QLO processing each of the plurality of input data streams, wherein the QLO processing circuitry alters the level of QLO processing based on a current channel environment;
a mux circuit for receiving and processing each of the plurality of input data streams having the different orbital angular momentum applied thereto to momentum multiplex a first group of the plurality of input data streams having the different orbital angular momentum applied thereto onto a first carrier signal including a first group of multiple orbital angular momentums therein to create a first momentum multiplexed group of orbital angular momentum signals on a first physical bandwidth such that each of the first group of the plurality of input data streams having the first group of the multiple orbital angular momentums applied thereto occupy an entire first physical bandwidth but do not interfere with each other due to the different orbital angular momentums applied thereto and to momentum multiplex a second group of the plurality of input data streams having the different orbital angular momentum applied thereto onto a second carrier signal including a second group of multiple orbital angular momentums to create a second momentum multiplexed group of orbital angular momentum signals on a second physical bandwidth such that each of the second group of the plurality of input data streams having the second group of the multiple orbital angular momentums applied thereto occupy an entire second physical bandwidth but do not interfere with each other due to the different orbital angular momentums applied thereto;
a multiplexing circuit for temporally multiplexing the first carrier signal including the first group of multiple orbital angular momentums therein containing the first momentum multiplexed group of orbital angular momentum signals and the second carrier signal including the second group of multiple orbital angular momentums therein containing the second momentum multiplexed group of orbital angular momentum signals onto a third carrier signal at a same frequency or wavelength such that each of the first momentum multiplexed group of orbital angular momentum signals and the second momentum multiplexed group of orbital angular momentum signals occupy different temporal portions of the same frequency or wavelength;
wherein each of the plurality of input data streams having the different orbital angular momentum applied thereto within first and second momentum multiplexed group of orbital angular momentum signals on the third carrier signal provide new Eigen channels that may carry unique information streams; and
a transmitter for transmitting the third carrier signal including the first carrier signal including the first group of multiple orbital angular momentums therein temporally multiplexed with the second carrier signal, the new Eigen channels within the transmitted third carrier signal greatly increasing an amount of data which may be transmitted over a communications link.

2. The system of claim 1 , wherein the first signal processing circuitry further comprises:
a carrier signal generator for generating a carrier signal for each of the plurality of input data streams;
a modulator for modulating each of the plurality of input data streams onto a separate carrier signal;
orbital angular momentum processing circuitry for applying the different orbital angular momentum to each of the separate carrier signals to provide the plurality of input data streams having the different orbital angular momentum applied thereto.

3. The system of claim 1 , wherein the communications link comprises at least one of a free space link, a fiber link or an RF link.

4. The system of claim 1 further comprising seventh signal processing circuitry for applying quantum level overlay modulation to the plurality of input data streams prior to processing by the first signal processing circuitry.

5. The system of claim 4 , wherein the multiplexing circuit and the seventh signal processing circuitry adaptively selects a level of quantum level overlay modulation and mode division multiplexing responsive to conditions on the communications link.

6. The system of claim 4 , wherein the multiplexing circuit and the seventh signal processing circuitry adaptively selects a level of quadrature amplitude modulation and mode division multiplexing responsive to conditions on the communications link.

7. The system of claim 4 , wherein the multiplexing circuit and the seventh signal processing circuitry adaptively selects a level of quantum level overlay modulation, quadrature amplitude modulation and mode division multiplexing responsive to conditions on the communications link.

8. A communications system, comprising:
a receiver for receiving a first carrier signal at a same frequency or wavelength over a communications link, wherein the first carrier signal includes a plurality of data streams having a different orbital angular momentum applied thereto within first and second momentum multiplexed group of orbital angular momentum signals, each of the plurality of data streams having the different orbital angular momentum applied thereto providing new Eigen channels that may carry unique information streams;
a de-multiplexing circuit for temporally separating the first carrier signal at the same frequency or wavelength containing the first momentum multiplexed group of orbital angular momentum signals and the second momentum multiplexed group of orbital angular momentum signals occupying different temporal portions of the same frequency or wavelength into a second carrier signal including a first group of multiple orbital angular momentums therein containing the first momentum multiplexed group of orbital angular momentum signals that each occupy an entire first physical bandwidth but do not interfere with each other due to a different orbital angular momentum applied thereto and a third carrier signal including a second group of multiple orbital angular momentums therein containing the second momentum multiplexed group of orbital angular momentum signals that each occupy an entire second physical bandwidth but do not interfere with each other due to a different orbital angular momentum applied thereto;
a de-mux circuit for separating the first momentum multiplexed group of orbital angular momentum signals within the first physical bandwidth into a first plurality of data streams each having one of the first group of the multiple orbital angular momentums applied thereto and for separating the second momentum multiplexed group of orbital angular momentum signals within the second physical bandwidth into a second plurality of data streams each having the one of the second group of the multiple orbital angular momentums applied thereto;
third signal processing circuitry for removing the orbital angular momentums from each of the first and second plurality of data streams; and
wherein the third signal processing circuitry further includes quantum level overlay (QLO) processing circuitry for removing QLO processing from each of the plurality of data streams, wherein the QLO processing circuitry alters the level of QLO processing based on a current channel environment.

9. The system of claim 8 , wherein the de-multiplexing circuit uses polarization de-multiplexing, mode division de-multiplexing and wave division de-multiplexing to separate the seco

Assignees

• Nxgen Partners Ip Llc
• Linquist Nita Sue

Inventors

• Ashrafi Solyman
• Linquist Roger D

Classifications

• H04B10/516 Primary

  Details of coding or modulation · CPC title

• H04J14/07

  Orbital angular momentum [OAM] multiplex systems · CPC title

• H04J14/05

  Spatial multiplexing systems · CPC title

• H04L5/04

  the signals being represented by different amplitudes or polarities, e.g. quadriplex · CPC title

• H04L27/2697 Primary

  in combination with other modulation techniques · CPC title