WIRELESS COMMUNICATION SYSTEM COMPENSATING FOR INTERFERENCE AND RELATED METHODS

• US 20090304095A1
• Filed: 06/04/2008
• Published: 12/10/2009
• Est. Priority Date: 06/04/2008
• Status: Active Grant

• Current Assignee: Nera Innovations Limited (Atlantic IP Services Limited)
• Original Assignee: Harris Corporation (L3Harris Technologies, Inc.)
• Inventors: Theodorou, Elias, Kuliner, Mitel, CHAUNCEY, David
• Granted Patent: US 8,345,780 B2
• Time in Patent Office: Days
• US Class Current: 375/260
• CPC Class Codes: H04L 1/0003 by switching between different modulation schemes
• CPC Class Codes: H04L 1/0009 by adapting the channel coding H04L1/1812 takes precedence
• CPC Class Codes: H04L 1/0019 in which mode-switching is based on a statistical approach
• CPC Class Codes: H04L 27/2601 Multicarrier modulation systems
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0062 Avoidance of ingress interference, e.g. ham radio channels

Abstract

A wireless communication system may include first and second wireless communications devices communicating with one another via a wireless communications link having a settable link characteristic. The first and second wireless communications devices may include respective first and second wireless transceivers and respective first and second controllers coupled thereto. The first controller may be for detecting received interference, for determining a type of the interference from among interference types comprising wideband interference and narrowband interference, and for setting the settable link characteristic to compensate for the interference based upon the interference type.

Claims

1. A wireless communication system comprising:

first and second wireless communications devices communicating with one another via a wireless communications link having at least one settable link characteristic;

said first and second wireless communications devices comprising respective first and second orthogonal frequency-division multiplexing (OFDM) wireless transceivers and respective first and second controllers coupled thereto;

said first controller for

detecting received interference,

determining a type of the received interference from among a plurality of interference types comprising wideband interference and narrowband interference, and

setting the at least one settable link characteristic to compensate for the received interference based upon the interference type.

2. The wireless communication system according to claim 1 wherein the plurality of interference types further comprises self interference.

3. The wireless communication system according to claim 1 wherein said first controller detects the received interference based upon a comparison of a current received signal to at least one prior received signal.

4. The wireless communication system according to claim 1 wherein said first controller repeats the detecting, determining, and setting.

5. The wireless communication system according to claim 1 wherein the at least one settable link characteristic comprises at least one receive processing characteristic.

6. The wireless communication system according to claim 1 wherein the at least one settable link characteristic comprises at least one transmit processing characteristic;

and wherein said first controller cooperates with said second controller to set the at least one transmit processing characteristic.

7. The wireless communication system according to claim 1 wherein said first controller generates an interference map of the received interference onto OFDM cells.

8. The wireless communication system according to claim 7 wherein said first controller sets the at least one settable link characteristic based upon the interference map.

9. The wireless communication system according to claim 1 wherein said first controller determines the interference type based upon at least one of fade characteristics, noise characteristics, and path characteristics.

10. The wireless communication system according to claim 1 wherein the at least one settable link characteristic comprises at least one of transmission power, frequency diversity, time diversity, modulation, forward error correction (FEC), channel bandwidth, and adaptive filtering.

11. A wireless communications device communicating with an other wireless communications device via a wireless communications link having at least one settable link characteristic, the wireless communications device comprising:

an orthogonal frequency-division multiplexing (OFDM) wireless transceiver; and

a controller coupled to said wireless transceiver;

said controller for

detecting received interference,

determining a type of the received interference from among a plurality of interference types comprising wideband interference and narrowband interference, and

setting the at least one settable link characteristic to compensate for the received interference based upon the interference type.

12. The wireless communication system according to claim 11 wherein the plurality of interference types further comprises self interference.

13. The wireless communications device according to claim 11 wherein said controller detects the received interference based upon a comparison of a current received signal to at least one prior received signal.

14. The wireless communications device according to claim 11 wherein the at least one settable link characteristic comprises at least one receive processing characteristic.

15. The wireless communications device according to claim 11 wherein the at least one settable link characteristic comprises at least one transmit processing characteristic;

and wherein said controller cooperates with the other wireless communications device to set the at least one transmit processing characteristic.

16. A method for compensating interference in a wireless communication system comprising first and second orthogonal frequency-division multiplexing (OFDM) wireless communications devices communicating with one another via a wireless communications link having at least one settable link characteristic, the method comprising:

detecting received interference;

determining a type of the received interference from among a plurality of interference types comprising wideband interference and narrowband interference; and

setting the at least one settable link characteristic to compensate for the received interference based upon the interference type.

17. The method according to claim 16 wherein the plurality of interference types further comprises self interference.

18. The method according to claim 16 wherein the detecting comprises comparing a current received signal to at least one prior received signal.

19. The method according to claim 16 further comprising repeating the detecting, determining, and setting.

20. The method according to claim 16 wherein the at least one settable link characteristic comprises at least one transmit processing characteristic;

and further comprising cooperating between the first and second wireless communications devices to set the at least one transmit processing characteristic.