Patent ID: 11949488
Assignee: ZTE CORPORATION
Field: Telecommunications (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 12:
13. The method according to claim 12, wherein before estimating the DOA of the receiving signal, the method further comprises:
keeping the beam directions of the receiving beams of the first group of the analog subarrays and the second group of the analog subarrays unchanged, performing a second change of the difference between the phase centers of the first group of the analog subarrays, acquiring third signals received by the first group of the analog subarrays and the difference between the phase centers after the second change of the first group of the analog subarrays;
or, keeping the beam directions of the receiving beams of the first group of the analog subarrays and the second group of the analog subarrays unchanged, performing a second change of the difference between the phase centers of the second group of the analog subarrays, acquiring third signals received by the second group of the analog subarrays and the difference between the phase centers after the second change of the second group of the analog subarrays;
wherein estimating the DOA of the receiving signal comprises:
estimating the DOA of the receiving signal, according to the first signals, the second signals and the third signals received by the first group of the analog subarrays, the difference between the phase centers before the first change, the difference between the phase centers after the first change and the difference between the phase centers after the second change of the first group of the analog subarrays, the first signals and the second signals received by the second group of the analog subarrays, the difference between the phase centers before the first change and the difference between the phase centers after the first change of the second group of the analog subarrays;
or, estimating the DOA of the receiving signal, according to the first signals and the second signals received by the first group of the analog subarrays, the difference between the phase centers before the first change and the difference between the phase centers after the first change of the first group of the analog subarrays, the first signals, the second signals and the third signals received by the second group of the analog subarrays, the difference between the phase centers before the first change, the difference between the phase centers after the first change and the difference between the phase centers after the second change of the second group of the analog subarrays.