Design method and training method of large-scale antenna training codebook under equal power constraints

A technology of large-scale antennas and training methods, applied in radio transmission systems, advanced technologies, electrical components, etc., can solve the problems of phase adjustment result addition, coupling between sub-arrays, etc., and achieve good out-of-band leakage and flat in-band beams. , the effect of good in-band flatness

CN110518949BActive Publication Date: 2020-01-31JIANGSU JIUXIN COPPER IND
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2020-01-31

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Abstract

The invention discloses a design method and a training method of a large-scale antenna training codebook under an equal power constraint in the technical field of wireless communication. The inventionis suitable for a large-scale antenna array system under equal-scale constraints by adopting an analog transceiving structure. The invention helps improve performance of a codebook based on a hierarchical search scheme based on the multi-resolution codebook. According to the design method virtual sub-array technology and multi-beam space synthesis technology are comprehensively applied. The problem of beam gain fluctuation caused by coupling between virtual sub-arrays is solved through the phase compensation technology, and a foundation is laid for self-adaptive beam alignment while codebookgeneration efficiency is improved. Equal-power constraints are applied to each antenna of the phase shift array, and array gain is fully utilized while the defect that a radio frequency switch needs to be configured in a traditional analog codebook generation method is overcome. The wave beam gain fluctuation problem in a code word main band is effectively restrained through the phase compensationtechnology, and a flat wave beam pattern is achieved.
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Description

technical field

[0001] The invention belongs to the technical field of wireless communication, and relates to a subarray-based multi-resolution codebook generation and adaptive beam training method under equal power constraints. Background technique

[0002] The capacity of mobile communication is growing explosively. In order to meet this demand, the frequency band of wireless communication is getting higher and higher. At present, it has developed from microwave frequency band to millimeter wave or even terahertz band to obtain sufficient spectrum resources. However, compared with the existing mobile communication systems operating in the low frequency band, there is serious transmission loss in the high frequency band wireless transmission. However, for high-frequency wireless communication systems, the shorter wavelength makes it possible to integrate more antennas with the same size while severe high-frequency transmission loss occurs. Therefore, it is an effective sol...

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Embodiment Construction

[0035] In order to solve the problems in the prior art, the present invention designs a subarray-based multi-resolution codebook generation and adaptive beam training method under equal power constraints, which can improve the accuracy and effective spectrum efficiency of beam training. The method includes a multi-resolution codebook generation algorithm and an adaptive beam training algorithm under equal power constraints. The multi-resolution codebook design method comprehensively uses virtual subarray technology and multi-beam spatial synthesis technology, and the problem of beam gain fluctuation caused by the coupling between virtual subarrays is effectively solved by phase compensation technology. In order to ensure the realizability of the codebook, the designed codebook ensures that the transmit power of each antenna is equal. The adaptive beam training algorithm adopts a hierarchical search method, and uses a similar search algorithm to train the sending end first and ...