A Phase Ambiguity Detection and Correction Method for Transceiver Based on Synthetic Sensing

Abstract

The invention discloses a method for detecting and correcting the phase ambiguity of a transceiver based on comprehensive perception, and relates to the technical field of wireless communication. The specific steps include: firstly, for the communication between a base station and a user, obtain the information of the communication link according to the comprehensive perception means The optimal beam weight matrix is ​​transmitted to the wireless module; the wireless module repeatedly performs phase compensation on the optimal beam weight for different phase compensation matrices, constructs corresponding detection beams and inserts them into the beam scanning and sends them to the user. The reference signal of the sounding beam is demodulated, and the optimal sounding beam number is fed back to the wireless module; the wireless module performs phase compensation for the asynchronous transceivers in the antenna array on the base station according to the optimal beam. The invention only constructs detection beams for phase compensation matrices less than half of the total number of antenna arrays, or only constructs phase compensation matrices for the case of a single element inversion, which simplifies the method and more efficiently detects phase jumps during online operation.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method for detecting and correcting transceiver phase ambiguity based on comprehensive perception. Background technique [0002] In a multi-antenna wireless communication system, beamforming (BF, Beamforming) technology realizes spatial filtering by changing the antenna weight of each antenna element, which can effectively improve link quality. Since the premise of BF technology is that each antenna element is phase-synchronized, it is possible to strictly control the transmission phase of each element and realize the constructive cancellation of signals in space; if different elements are connected to different transceivers, then each transceiver Phase synchronization must also be achieved, so phase synchronization between different transceivers is a prerequisite for implementing BF with multiple transceivers. [0003] In actual radio frequency equipment, when ...

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Problems solved by technology

[0022] In the wireless communication system of the prior art, it is impossible to correct the phase ambiguity of the transceiver in the communication working state, and it can only be corrected when there is no communication; at the same time, it is lack of finding the specific phase jump of the transceiver in the working state The method can only passively switch to the calibration mode artificially after the quality of the communication link declines. The present invention proposes a method for detecting and correcting the phase ambiguity of the transceiver based on comprehensive perception. On the basis of transmitting the phase-compensated detection beam, the base station performs phase compensation according to the optimal beam fed back by the UE; the phase compensation set of the detection beam for the phase ambiguity problem between transceivers is proposed and simplified; for the use of BF Multiple transceivers with phase ambiguity, enabling online phase ambiguity correction

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