Identifying devices with transpositional modulation

• US 9,516,490 B1
• Filed: 04/20/2016
• Issued: 12/06/2016
• Est. Priority Date: 04/20/2016
• Status: Active Grant

• Current Assignee: TM IP Holdings LLC
• Original Assignee: TM IP Holdings LLC
• Inventors: Gerdes, Richard C., Hodges, Daniel L., McIntosh, Quinn Colin
• Primary Examiner(s): Kassa, Zewdu
• Application Number:
  US15/133,589
• Time in Patent Office: 230 Days
• Field of Search: 375/259, 375/295, 375/316, 375/219
• US Class Current: 1/1
• CPC Class Codes: G01S 13/765 with exchange of information between interrogator and responder
• CPC Class Codes: G01S 7/003 Transmission of data between radar, sonar or lidar systems and remote stations
• CPC Class Codes: H04L 27/0012 arrangements for identifying the type of modulation
• CPC Class Codes: H04W 8/005 Discovery of network devices, e.g. terminals
• CPC Class Codes: H04W 8/22 Processing or transfer of terminal data, e.g. status or physical capabilities

Abstract

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for transmitting, by a first device, a transmission signal that includes a carrier signal modulated with a TM signal. Receiving a response signal from a second device in response to the transmission signal. Determining, whether the response signal includes the TM signal.

Claims

1. A method for identifying transpositional modulation (TM) capable devices, the method comprising:

transmitting, by a first device, a transmission signal that includes a carrier signal modulated with a TM signal, wherein the TM signal is a carrier modulated signal that conveys information without directly altering an amplitude, a phase, or a frequency of the carrier signal;

receiving a response signal from a second device in response to the transmission signal; and

determining, by the first device, whether the response signal includes the TM signal.

2. The method of claim 1, further comprising determining that the second device is a TM capable device based on determining that the response signal includes the TM signal.

3. The method of claim 1, wherein determining whether the response signal includes the TM signal comprises mixing the response signal with a second harmonic of a carrier signal of the response signal to produce a mixed signal.

4. The method of claim 3, wherein determining whether the response signal includes the TM signal comprises comparing the mixed signal to a third harmonic of the carrier signal of the response signal.

5. The method of claim 1, wherein the transmission signal includes the carrier signal modulated with the TM signal and a non-TM modulation signal.

6. The method of claim 1, wherein the response signal includes a non-TM modulation signal.

7. The method of claim 6, wherein determining whether the response signal includes the TM signal comprises performing a separation and extraction (SEPEX) process on the response signal to remove the non-TM modulation signal.

8. The method of claim 1, wherein the transmission signal includes the carrier signal modulated with a first TM signal, and wherein determining whether the response includes the TM signal comprises determining whether the response signal includes a second, different TM signal.

9. The method of claim 8, wherein the second TM signal includes information about the second device.

10. The method of claim 9, wherein the information includes information identifying the second device.

11. The method of claim 9, wherein the information includes information identifying characteristics of the second device.

12. The method of claim 9, wherein the second device is installed on a vehicle, and wherein the information includes information about the vehicle.

13. The method of claim 12, wherein the information includes data from a data recorder installed on the vehicle.

14. The method of claim 1, wherein the transmission signal is a RADAR signal.

15. A method for providing device identification data, the method comprising:

receiving, by a first device, a transmission signal from a second device, the transmission signal including a carrier signal modulated with a first transpositional modulation (TM) signal, wherein the TM signal is a carrier modulated signal that conveys information without directly altering an amplitude, a phase, or a frequency of the carrier signal;

identifying the first TM signal within the transmission signal; and

sending, to the second device, a response signal that includes data encoded within a second TM signal.

16. The method of claim 15, wherein the transmission signal includes the carrier signal modulated with the TM signal and a non-TM modulation signal.

17. The method of claim 15, wherein the response signal includes a non-TM modulation signal.

18. The method of claim 15, wherein identifying the first TM signal within the transmission signal comprises performing a separation and extraction (SEPEX) process on the transmission signal to remove the non-TM modulation signal.

19. The method of claim 15, wherein the data encoded within the second TM signal includes information about the first device.

20. The method of claim 18, wherein the information includes information identifying characteristics of the first device.

21. The method of claim 18, wherein the first device is installed on a vehicle, and wherein the information includes information about the vehicle.

22. The method of claim 20, wherein the information includes data from a data recorder installed on the vehicle.

23. The method of claim 15, wherein the transmission signal is a RADAR signal.