Methods, devices and systems for enabling simultaneous operation of different technology based devices over a shared frequency spectrum
In one example embodiment, a device includes a memory configured to store computer-readable instructions therein and a processor. The processor is configured to execute the computer-readable instructions to determine a first signal of a first technology in presence of interference from at least a second signal of a second technology, the first signal and the second signal being overlappingly transmitted, the determined first signal being used for processing of information associated with the first signal.
1. A device comprising:
a memory configured to store computer-readable instructions therein; and
a processor configured to execute the computer-readable instructions to,
form a cost function associated with a signal received at the device, the signal including at least a first signal of a first system operating based on a first technology and a second signal of a second system operating based on a second technology, the second signal having been transmitted simultaneously with the first signal over the same frequency and time domains for reception by the device, the cost function being formed based on at least the received signal, a range-frequency spectrum associated with a transmission of the first signal, a set of Doppler weights, at least one regularization function, at least one data-fidelity term, at least one regularization parameter, a step-size parameter and a power spectral density of the second signal,
determine the first signal from the signal based on the formed cost function, and
determine the second signal based on the signal and the first signal, the determined second signal being used for processing of information associated with the second signal.
2. The device of claim 1 , wherein the first signal and the second signal overlap spatially.
3. The device of claim 1 , wherein the processor is further configured to,
receive the signal, the signal including the first signal with additive noise corresponding to at least the second signal, and
minimize the cost function associated with the received signal, wherein
the processor is configured to determine the first signal as possible values of the first signal that minimize the cost function.
4. The device of claim 3 , wherein the first signal is a radar fast-time/slow-time data matrix.
5. The device of claim 1 , wherein
the first system is a radar system and the first technology is a radar technology,
the second system is a wireless communication system and the second technology is a wireless access technology,
the device is a receiver of the wireless communications system,
the first signal is a radar signal transmitted by a transmitter of the radar system, and
the second signal is a signal transmitted by a transmitter of the wireless communications system.
6. The device of claim 5 , wherein the wireless access technology is at least one of a wireless local area networking standard and a radio access technology.
7. The device of claim 5 , wherein the processor is further configured to,
receive the signal, the signal including the first signal, the second signal and at least one additional radar signal,
determine the first signal and the at least one additional radar signal, and
subtract a combination of the first signal and the at least one additional radar signal from the signal to determine the second signal.
8. The device of claim 7 , wherein
the wireless communications system is configured to operate simultaneously with at least one additional wireless communications system, and
the processor is further configured to suppress wireless communications signals of the least one additional wireless communications system, when the processor determines the second signal.
9. The device of claim 1 , wherein the first and second signals are transmitted by the first and second systems without coordination between the first and second systems.
10. A device comprising:
a memory configured to store computer-readable instructions therein; and
a processor configured to execute the computer-readable instructions to,
form a cost function associated with a signal received at the device, the signal including at least a first signal of a first system operating based on a first technology and a second signal of a second system operating based on a second technology, the second signal having been transmitted simultaneously with the first signal over the same frequency and time domains for reception by the device, the cost function being formed based on at least the received signal, a frequency response of a filter associated with a transmission of the first signal, a regularization parameter, at least one regularization function, at least one data-fidelity term, at least one regularization parameter a step-size parameter and a power spectral density of the second signal,
determine the first signal from the signal based on the formed cost function, and
determine the second signal based on the signal and the first signal, the determined second signal being used for processing of information associated with the second signal.
11. The device of claim 10 , wherein the first signal and the second signal overlap spatially.
12. The device of claim 10 , wherein the processor is further configured to,
receive the signal, the signal including the first signal with additive noise corresponding to at least the second signal, and
minimize the cost function associated with the received signal, wherein
the processor is configured to determine the first signal as possible values of the first signal that minimize the cost function.
13. The device of claim 12 , wherein the first signal is a radar data time-series.
14. The device of claim 10 , wherein
the first system is a radar system and the first technology is a radar technology,
the second system is a wireless communication system and the second technology is a wireless access technology,
the device is a receiver of the wireless communications system,
the first signal is a radar signal transmitted by a transmitter of the radar system, and
the second signal is a signal transmitted by a transmitter of the wireless communications system.
15. The device of claim 14 , wherein the wireless access technology is at least one of a wireless local area networking standard and a radio access technology.
16. The device of claim 14 , wherein the processor is further configured to,
receive the signal, the signal including the first signal, the second signal and at least one additional radar signal,
determine the first signal and the at least one additional radar signal, and
subtract a combination of the first signal and the at least one additional radar signal from the signal to determine the second signal.
17. The device of claim 16 , wherein
the wireless communications system is configured to operate simultaneously with at least one additional wireless communications system, and
the processor is further configured to suppress wireless communications signals of the least one additional wireless communications system, when the processor determines the second signal.
18. The device of claim 10 , wherein the first and second signals are transmitted by the first and second systems without coordination between the first and second systems.