Electronic device for expanding sensing bandwidth by integrating plurality of channel impulse responses, and control method therefor
An electronic device is provided. The electronic device includes a first communication circuit, a second communication circuit, and at least one processor. The first communication circuit is configured to receive, in a first band, a first reflective signal reflected by an object, and obtain, based on the received first reflective signal, a first channel impulse response corresponding to the first reflective signal. The second communication circuit is configured to receive, in a second band, a second reflective signal reflected by the object, obtain, based on the received second reflective signal, a second channel impulse response corresponding to the second reflective signal, and obtain a third channel impulse response based on a first calculation using the second channel impulse response, a first central frequency of the first band and a second central frequency of the second band.
1. An electronic device comprising:
a first communication circuit;
a second communication circuit; and
at least one processor operatively connected to the first communication circuit and the second communication circuit,
wherein the first communication circuit is configured to:
receive, in a first band, a first reflection signal reflected by at least one object, and
based on the received first reflection signal, obtain a first channel impulse response corresponding to the first reflection signal,
wherein the second communication circuit is configured to:
receive, in a second band, a second reflection signal reflected by the at least one object,
based on the received second reflection signal, obtain a second channel impulse response corresponding to the second reflection signal, and
obtain a third channel impulse response based on a first calculation using the second channel impulse response, a first frequency of the first band and a second frequency of the second band, and
wherein the at least one processor is configured to:
obtain a fourth channel impulse response based on the first channel impulse response and the third channel impulse response.
2. The electronic device of claim 1 , wherein the second frequency is greater than the first frequency.
3. The electronic device of claim 1 , wherein the second communication circuit is further configured to obtain the third channel impulse response, based on a difference between the first frequency and the second frequency.
4. The electronic device of claim 3 , wherein the second communication circuit is further configured to:
obtain information on the first frequency from at least one of the first communication circuit or the at least one processor, and
identify the difference between the first frequency and the second frequency, based on the information on the first frequency.
5. The electronic device of claim 1 , wherein the second communication circuit is further configured to:
perform a first calculation in a time domain based on the first frequency and the second frequency with respect to the second channel impulse response, and
obtain the third channel impulse response, based on the first calculation.
6. The electronic device of claim 1 , wherein the second communication circuit is further configured to:
obtain the fourth channel impulse response by performing a second calculation of summing the first channel impulse response and the third channel impulse response, and
provide the acquired fourth channel impulse response to the at least one processor.
7. The electronic device of claim 1 , wherein the at least one processor is further configured to:
receive the fourth channel impulse response from the second communication circuit, or
perform a second calculation of summing the third channel impulse response and the first channel impulse response received from the second communication circuit, so as to obtain the fourth channel impulse response.
8. The electronic device of claim 1 ,
wherein the first communication circuit is further configured to:
identify a first long training field (LTF) of the first reflection signal, and
obtain the first channel impulse response, based on the identified first LTF, and
wherein the second communication circuit is further configured to:
identify a second LTF of the second reflection signal, and
obtain the second channel impulse response, based on the identified second LTF.
9. The electronic device of claim 8 ,
wherein the first communication circuit is further configured to identify an amplitude and/or a phase of at least one first sub-carrier that transmits the first LTF so as to obtain the first channel impulse response, and
wherein the second communication circuit is further configured to identify an amplitude and/or a phase of at least one second sub-carrier that transmits the second LTF so as to obtain the second channel impulse response.
10. The electronic device of claim 1 , wherein the at least one processor is further configured to identify an attribute of the at least one object, based on the fourth channel impulse response.
11. The electronic device of claim 1 , wherein at least one of the first reflection signal or the second reflection signal is generated by reflection of at least one communication signal by the at least one object, the at least one communication signal being transmitted by at least one of the electronic device or an external electronic device.
12. A method for controlling an electronic device, the method comprising:
receiving, in a first band, a first reflection signal reflected by at least one object;
based on the received first reflection signal, obtaining a first channel impulse response corresponding to the first reflection signal;
receiving, in a second band, a second reflection signal reflected by the at least one object;
based on the received second reflection signal, obtaining a second channel impulse response corresponding to the second reflection signal;
obtaining a third channel impulse response based on a first calculation using the second channel impulse response, a first frequency of the first band and a second frequency of the second band; and
obtaining a fourth channel impulse response based on the first channel impulse response and the third channel impulse response.
13. The method of claim 12 , wherein the second frequency is greater than the first frequency.
14. The method of claim 12 , further comprising obtaining the third channel impulse response, based on a difference between the first frequency and the second frequency.
15. The method of claim 14 , further comprising:
obtaining information on the first frequency; and
identifying the difference between the first frequency and the second frequency, based on the obtained information on the first center frequency.