System and method for increased bandwidth efficiency within microwave backhaul of a telecommunication system

• US 8,432,884 B1
• Filed: 11/16/2011
• Issued: 04/30/2013
• Est. Priority Date: 11/16/2011
• Status: Active Grant

• Current Assignee: T-Mobile USA, Inc. (Deutsche Telekom AG)
• Original Assignee: MetroPCS Wireless Incorporated (Deutsche Telekom AG)
• Inventors: Ashrafi, Solyman
• Primary Examiner(s): Phillips, Hassan
• Assistant Examiner(s): JONES, PRENELL P
• Application Number:
  US13/297,941
• Publication Number:
  US 20130121330A1
• Time in Patent Office: 531 Days
• Field of Search: None
• US Class Current: 370/343
• CPC Class Codes: H04J 1/08 Arrangements for combining channels branching filters H01P1/213, H03H7/46
• CPC Class Codes: H04L 5/04 the signals being represented by different amplitudes or polarities, e.g. quadriplex
• CPC Class Codes: H04W 72/044 based on the type of the allocated resource

Abstract

An apparatus for transmitting information in a wireless communication system includes a first interface for receiving a plurality of input data streams. Signal processing circuitry transmits and receives the plurality of input data streams on at least one frequency. Each of the plurality of input data streams on the at least one frequency have a different orbital angular momentum imparted thereto.

Claims

1. An apparatus for transmitting information in a wireless communications system, comprising:

a first interface for receiving a plurality of input data streams;

signal processing circuitry for transmitting and receiving the plurality of input data streams on a single RF frequency of a radio frequency channel, each of the plurality of input data streams on the single RF frequency having a different orbital angular momentum imparted thereto, wherein the signal processing circuitry further comprises;

first signal processing circuitry for imparting the different orbital angular momentum to each of the plurality of input data streams;

a signal combiner for combining at least a portion of the plurality of input data streams having the different orbital angular momentum onto the single RF frequency; and

a transmitter for transmitting the single RF frequency having the plurality of different orbital angular momentums therein over the radio frequency channel;

a second interface for outputting the single frequency having the plurality of input data streams each having the different orbital angular momentum imparted thereto.

2. The apparatus of claim 1, wherein the first signal processing circuitry generates a different current for each of the plurality of input data streams for imparting the different orbital angular momentum to an input data stream.

3. The apparatus of claim 1, wherein the signal processing circuitry further comprises:

a receiver for receiving the at least one frequency having the plurality of different orbital angular momentums therein over the radio frequency channel;

signal separator circuitry for separating each of the plurality of input data streams having the different orbital angular momentum from the received single frequency; and

second signal processing circuitry for removing the different orbital angular momentum from each of the plurality of input data streams.

4. The apparatus of claim 1 further including a modulator/demodulator for modulating and demodulating the input data streams.

5. A wireless communications system for transmitting information over a wireless backhaul of a telecommunications system, comprising:

first transceiver circuitry for transmitting a plurality of frequencies over an RF communications link of the wireless backhaul, wherein the first transceiver circuitry transmits a plurality of data streams on each of the plurality of frequencies, each of the plurality of data streams transmitted with a unique orbital angular momentum associated therewith;

second transceiver circuitry for receiving the plurality of frequencies over the RF communications link of the wireless backhaul, wherein the second transceiver circuitry extracts from each of the plurality of frequencies the plurality of data streams having the unique orbital angular momentum associated therewith.

6. The wireless communications system of claim 5, wherein the first transceiver circuitry further comprises:

first signal processing circuitry for generating the unique orbital angular momentum associated with each of the plurality of data streams;

a signal combiner for combining each of the plurality of data streams having the different orbital angular momentum onto at least one frequency; and

a transmitter for transmitting the at least one frequency having the plurality of different orbital angular momentums therein over the RF communications link of the wireless backhaul.

7. The apparatus of claim 6 wherein the first signal processing circuitry generates a different current for each of the plurality of input data streams for imparting the unique orbital angular momentum to an input data stream.

8. The wireless communications system of claim 7, wherein the second transceiver circuitry further includes:

a receiver for receiving the at least one frequency having the plurality of different orbital angular momentums therein over the RF communications link of the wireless backhaul;

signal separator circuitry for separating each of the plurality of data streams having the unique orbital angular momentum associated therewith from the received at least one frequency; and

second signal processing circuitry for removing the unique orbital angular momentum from each of the plurality of input data streams.

9. The wireless communications system of claim 5 further including a first antenna for transmitting the plurality of frequencies having the plurality of input data streams, each of the plurality of input data streams having the unique orbital angular momentum therein responsive to information contained in the input data stream.

10. The wireless communications system of claim 9 further including a second antenna for receiving the plurality of frequencies having the plurality of input data streams having the unique orbital angular momentum therein.

11. A wireless communications link for carrying information between a transmission point and a receiving point in a wireless backhaul of a wireless communications system, comprising:

a plurality of frequencies interconnecting the transmission point and the receiving point on an RF communications link;

a plurality of data streams combined together onto at least one of the plurality of frequencies; and

wherein each of the plurality of data streams on a same frequency of the plurality of frequencies have a unique orbital angular momentum associated therewith.

12. The wireless communications link of claim 11, wherein each of the plurality of data streams have a unique current associated therewith for generating the unique orbital angular momentum.

13. A method for transmitting data, comprising:

receiving a plurality of data streams;

imparting a unique orbital angular momentum to each of the plurality of data streams;

combining at least a portion of the plurality of data streams having the unique orbital angular momentum applied thereto onto a single frequency of an RF communications link; and

transmitting the single frequency including the portion of the of data streams having the unique orbital angular momentum applied thereto over the RF communications link.

14. The method of claim 13 wherein the step of imparting further comprises:

generating a unique current for each of the plurality of data streams; and

applying the generated unique current to each of the plurality of data streams.

15. The method of claim 13 further comprising the step of receiving the at least one frequency including the plurality of input data streams having the unique orbital angular momentum associated therewith over the RF communications link.

16. The method of claim 15, wherein the step of receiving further comprises the steps of:

receiving the at least one frequency including the plurality of input data streams having a unique orbital angular momentum over the RF communications link;

separating each of the plurality of input data streams having the unique orbital angular momentum from the received at least one frequency; and

second signal processing circuitry for removing the unique orbital angular momentum from each of the plurality of input data streams.