A Dynamic User Hybrid Precoding Method for Millimeter Wave Systems

A system dynamic, millimeter wave technology, applied in transmission systems, radio transmission systems, transmission monitoring, etc., can solve the impact of hybrid precoding algorithms and rate performance user status, traditional algorithms are not suitable for dynamic user scenarios, and it is difficult to maintain expected performance and other problems to achieve the effect of extending the training period
CN110958041BActive Publication Date: 2021-08-24XIDIAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XIDIAN UNIV
Publication Date
2021-08-24

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Abstract

The present invention relates to a method for dynamic user hybrid precoding of a millimeter wave system, comprising: obtaining channel state information of each user, and storing the channel state information of adjacent time slots of each user in a storage unit; according to the stored channel state information, to obtain the optimal propagation path for each user; to judge whether the optimal propagation path is a direct path, to obtain the judgment result of each user; to obtain the state of each user according to the judgment result; Coding matrix; design the user's digital precoding matrix according to the analog precoding matrix; perform data transmission according to the analog precoding matrix and the digital precoding matrix. The method of the present invention can obtain the state of each user only by comparing and judging the channel state information of adjacent time slots of the user, which improves the efficiency of user state detection and reduces the complexity of detection, and according to the detected real-time state of the user , an adaptive hybrid precoding method is proposed.
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Description

technical field

[0001] The invention belongs to the technical field of wireless communication, and in particular relates to a method for dynamic user mixed precoding of a millimeter wave system. Background technique

[0002] As one of the key technologies of the fifth-generation mobile communication system, millimeter wave can effectively solve the problem of global frequency band shortage and greatly improve system transmission speed and spectrum efficiency. However, the sparse channels and narrow beams in mmWave systems make their performance highly susceptible to the influence of user states in the system. For example, when the millimeter wave beam is blocked by the human body, about 35dB of beam gain will be lost. In addition, when the user moves, the mmWave beam gain will also suffer varying degrees of attenuation.

[0003] Aiming at the problem of precoding in the millimeter-wave partially connected antenna array system, many scholars have conducted in-depth research...

Claims

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