Methods, devices and systems for enabling simultaneous operation of different technology based devices over a shared frequency spectrum

Abstract

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.

What is claimed is: 
     
         1 . A device comprising:
 a memory configured to store computer-readable instructions therein; and   a processor configured to execute the computer-readable instructions to,
 receive a signal including at least a first signal operating based on a first technology and a second signal 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, 
 form a cost function based on at least the received signal, a parameter associated with the first signal 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 for processing of information associated with the second signal. 
   
     
     
         2 . The device of  claim 1 , wherein the first signal is transmitted by a first system operating based on the first technology and the second signal is transmitted by a second system operating based on the second technology. 
     
     
         3 . The device of  claim 2 , wherein the first signal and the second signal are transmitted without any coordination between the first system and the second system. 
     
     
         4 . The device of  claim 2 , 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.   
     
     
         5 . The device of  claim 1 , wherein the first signal and the second signal overlap spatially. 
     
     
         6 . The device of  claim 1 , wherein
 the signal includes the first signal with additive noise corresponding to at least the second signal, and   the processor is further configured to,
 minimize the cost function associated with the received signal, and 
 determine the first signal as possible values of the first signal that minimize the cost function. 
   
     
     
         7 . The device of  claim 1 , wherein the first signal is a radar fast-time/slow-time data matrix. 
     
     
         8 . The device of  claim 7 , wherein
 the parameter is a range-frequency spectrum associated with a transmission of the first signal, and   the processor is configured to form the cost function based on the range-frequency spectrum associated with the 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 the power spectral density of the second signal.   
     
     
         9 . The device of  claim 1 , wherein the first signal is a radar data time-series. 
     
     
         10 . The device of  claim 9 , wherein
 the parameter is a frequency response of a filter associated with a transmission of the first signal, and   the processor is configured to form the cost function based on at least the received signal, the frequency response of the filter associated with the 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 the power spectral density of the second signal.   
     
     
         11 . A method comprising:
 receiving, at a device, a signal including at least a first signal operating based on a first technology and a second signal 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;   forming, at the device, a cost function based on at least the received signal, a parameter associated with the first signal and a power spectral density of the second signal;   determining, at the device, the first signal from the signal based on the formed cost function; and   determining, at the device, the second signal based on the signal and the first signal for processing of information associated with the second signal.   
     
     
         12 . The method of  claim 11 , wherein the first signal is transmitted by a first system operating based on the first technology and the second signal is transmitted by a second system operating based on the second technology. 
     
     
         13 . The method of  claim 12 , wherein the first signal and the second signal are transmitted without any coordination between the first system and the second system. 
     
     
         14 . The method of  claim 12 , 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 method of  claim 11 , wherein the first signal and the second signal overlap spatially. 
     
     
         16 . The method of  claim 11 , wherein
 the signal includes the first signal with additive noise corresponding to at least the second signal, and   the method further comprises:
 minimizing the cost function associated with the received signal, and 
 determining the first signal as possible values of the first signal that minimize the cost function. 
   
     
     
         17 . The method of  claim 11 , wherein the first signal is a radar fast-time/slow-time data matrix. 
     
     
         18 . The method of  claim 17 , wherein
 the parameter is a range-frequency spectrum associated with a transmission of the first signal, and   the forming forms the cost function based on the range-frequency spectrum associated with the 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 the power spectral density of the second signal.   
     
     
         19 . The method of  claim 11 , wherein the first signal is a radar data time-series. 
     
     
         20 . The method of  claim 19 , wherein
 the parameter is a frequency response of a filter associated with a transmission of the first signal, and   the forming forms the cost function based on at least the received signal, the frequency response of the filter associated with the 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 the power spectral density of the second signal.