Systems and methods for improved high capacity in wireless communication systems

• US 9,209,885 B2
• Filed: 09/23/2014
• Issued: 12/08/2015
• Est. Priority Date: 10/17/2011
• Status: Active Grant

• Current Assignee: Aviat U.S., Inc. (Aviat Networks Incorporated)
• Original Assignee: Aviat U.S., Inc. (Aviat Networks Incorporated)
• Inventors: Kennard, Paul A., Licardie, Sergio
• Primary Examiner(s): ODOM, CURTIS B
• Application Number:
  US14/494,418
• Publication Number:
  US 20150010115A1
• Time in Patent Office: 441 Days
• US Class Current: 1/1
• CPC Class Codes: H04B 7/08 at the receiving station
• CPC Class Codes: H04B 7/0837 using pre-detection combining H04B7/0868 takes precedence
• CPC Class Codes: H04B 7/12 Frequency diversity
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex

Abstract

An exemplary system comprises at least one antenna, first and second signal paths, and an N-plexer. The first antenna may be configured to receive first and second diversity received signals. The first signal path may have a first converter configured to convert the first diversity received signal to first carrier group. The second signal path may have a second converter configured to convert the second diversity received signal to a second carrier group. The N-plexer may be configured to provide the first and second diversity received signals to a first cable in communication with a first modem.

Claims

1. A system comprising:

an antenna configured to receive a first diversity receive signal and a second diversity receive signal, the first diversity receive signal and the second diversity receive signal being received at a received frequency, the first diversity receive signal and the second diversity receive signal having signal diversity;

a first signal path having a first converter configured to convert the first diversity receive signal from the received frequency to a first carrier group;

a second signal path having a second converter configured to convert the second diversity receive signal from the received frequency to a second carrier group; and

a first N-plexer configured to provide the first carrier group and the second carrier group to a first modem.

2. The system of claim 1 further comprising a second N-plexer configured to receive the first carrier group and the second carrier group and then provide the first carrier group and the second carrier group to the first modem.

3. The system of claim 1 wherein the antenna is further configured to receive a third diversity receive signal and a fourth diversity receive signal, the third diversity receive signal and the fourth diversity receive signal being received at the received frequency and the third diversity receive signal and the fourth diversity receive signal having signal diversity, the system further comprising:

a third signal path having a third converter configured to convert the third diversity receive signal from the received frequency to a third carrier group;

a fourth signal path having a fourth converter configured to convert the fourth diversity receive signal from the received frequency to a fourth carrier group; and

a second N-plexer configured to provide the third carrier group and the fourth carrier group to a second modem.

4. The system of claim 1 wherein the first modem retrieves the first and second diversity receive signals from the first and second carrier groups and provides the first and second diversity receive signals to a path in communication with customer premises equipment.

5. The system of claim 3 wherein the second modem retrieves the third and fourth diversity receive signals from the third and fourth carrier groups and provides the third and fourth diversity receive signals to a path in communication with customer premises equipment.

6. The system of claim 3 wherein the first diversity receive signal and the fourth diversity receive signal are vertically polarized signals from the antenna and the second diversity receive signal and the third diversity receive signal are horizontally polarized signals from the antenna.

7. The system of claim 3 further comprising:

a third N-plexer configured to receive the first carrier group and the second carrier group;

wherein the first modem is configured to demodulate signals of the first and second carrier groups.

8. The system of claim 7 further comprising:

a fourth N-plexer configured to receive the third carrier group and the fourth carrier group;

wherein the second modem is configured to demodulate signals of the third and fourth carrier groups.

9. The system of claim 7 wherein the first modem performs maximum ratio combining utilizing the first diversity receive signal and the second diversity receive signal.

10. The system of claim 8 wherein the first modem communicates with the second modem to take advantage of polarization diversity.

11. The system of claim 8 wherein the first and fourth diversity receive signals are provided from an orthomode transducer coupled to the antenna.

12. The system of claim 11 wherein the second and third diversity receive signals are diverse from the first and fourth diversity receive signals, the second and third diversity receive signals being provided from the orthomode transducer coupled to the antenna.

13. The system of claim 8 wherein the first, second, third and fourth carrier groups each comprise 28 MHz carriers.

14. The system of claim 8 wherein the first modem provides a first diversity transmit signal as a fifth carrier group and the second modem provides a second diversity transmit signal as a sixth carrier group, the third N-plexer further configured to provide the fifth carrier group, the fourth N-plexer further configured to provide the sixth carrier group, the first N-plexer further configured to provide the fifth carrier group to a first transmitter for transmission of the first diversity transmit signal over the antenna at a first polarization, the second N-plexer further configured to provide the sixth carrier group to a second transmitter for transmission of the second diversity transmit signal over the antenna at a second polarization, the first polarization being diverse to the second polarization.

15. A method comprising:

receiving, by an antenna, a first diversity receive signal and a second diversity receive signal, the first diversity receive signal and the second diversity receive signal being received at a received frequency and the first diversity receive signal and the second diversity receive signal having signal diversity;

converting, by a first converter electrically coupled to a first signal path, the first diversity receive signal from the received frequency to a first carrier group;

converting, by a second converter electrically coupled to a second signal path, the second diversity receive signal from the received frequency to a second carrier group; and

providing, by a first N-plexer, the first carrier group and the second carrier group to a first modem.

16. The method of claim 15 further comprising receiving, by a second N-plexer, the first carrier group and the second carrier group and then providing the first carrier group and the second carrier group to the first modem.

17. The method of claim 15 further comprising receiving, by the antenna, a third diversity receive signal and a fourth diversity receive signal, the third diversity receive signal and the fourth diversity receive signal being received at the received frequency and the third diversity receive signal and the fourth diversity receive signal having signal diversity;

converting, by a third converter electrically coupled to a third signal path, the third diversity receive signal from the received frequency to a third carrier group;

converting, by a fourth converter electrically coupled to a fourth signal path, the fourth diversity receive signal from the received frequency to a fourth carrier group; and

providing, by a second N-plexer, the third carrier group and the fourth carrier group to a second modem.

18. The method of claim 15 further comprising retrieving, by the first modem, the first and second diversity receive signals from the first and second carrier groups and providing, by the first modem, the first and second diversity receive signals to a path in communication with customer premises equipment.

19. The method of claim 17 further comprising retrieving, by the second modem, the third and fourth diversity receive signals from the third and fourth carrier groups and providing, by the second modem, the third and fourth diversity receive signals to a path in communication with customer premises equipment.

20. The method of claim 17 wherein the first diversity receive signal and the fourth diversity receive signal are vertically polarized signals from the antenna and the second diversity receive signal and the third diversity receive signal are horizontally polarized signals from the antenna.

21. The method of claim 17 further comprising:

receiving, by a third N-plexer, the first carrier group and the second carrier group from the first N-plexer; and

demodulating, by the first modem, signals of the first and second carrier groups.

22. The method of claim 21 further comprising:

receiving, by a fourth N-plexer, the third carrier group and the fourth carrier group from the second N-plexer; and

demodulating, by the second modem, signals of the third and fourth carrier groups.

23. The method of claim 21 further comprising performing, by the first modem, maximum ratio combining utilizing the first diversity receive signal and the second diversity receive signal.

24. The method of claim 21 further comprising communicating between the first and second modems to take advantage of polarization diversity.

25. The method of claim 22 further comprising providing, by an orthomode transducer coupled to the antenna, the first and fourth diversity receive signals.

26. The method of claim 25 wherein the second and third diversity receive signals are diverse from the first and fourth diversity receive signals, the second and third diversity receive signals being provided from the orthomode transducer coupled to the antenna.

27. The method of claim 22 wherein the first, second, third and fourth carrier groups each comprise 28 MHz carriers.

28. The method of claim 22 further comprising:

providing, by the first modem, a first diversity transmit signal as a fifth carrier group;

providing, by the second modem, a second diversity transmit signal as a sixth carrier group;

providing, by the third N-plexer, the fifth carrier group to a first transmitter for transmission of the first diversity transmit signal over the antenna at a first polarization; and

providing, by the fourth N-plexer, the sixth carrier group to a second transmitter for transmission of the second diversity transmit signal over the antenna at a second polarization that is diverse to the first polarization.

29. A system comprising:

an antenna configured to receive a first diversity receive signal and a second diversity receive signal, the first diversity receive signal and the second diversity receive signal being received at a received frequency and the first diversity receive signal and the second diversity receive signal having signal diversity;

a first means for converting the first diversity receive signal from the received frequency to a first carrier group;

a second means for converting the second diversity receive signal from the received frequency to a second carrier group; and

a first N-plexer configured to provide the first carrier group and the second carrier group to a first modem.

30. The system of claim 29 wherein the antenna is further configured to receive a third diversity receive signal and a fourth diversity receive signal, the third diversity receive signal and the fourth diversity receive signal being received at the received frequency and the third diversity receive signal and the fourth diversity receive signal having signal diversity, the system further comprising:

a third means for converting the third diversity receive signal from the received frequency to a third carrier group;

a fourth means for converting the fourth diversity receive signal from the received frequency to a fourth carrier group; and

a second N-plexer configured to provide the third carrier group and the fourth carrier group to a second modem.