Power iteration hybrid beam forming method based on beam selection

A beamforming and hybrid beamforming technology, which is applied in the field of power iterative hybrid beamforming based on beam selection, can solve the problems of complex implementation, unsuitable energy consumption, etc.

Active Publication Date: 2019-06-14
SOUTHEAST UNIV
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Problems solved by technology

Digital beamforming can simultaneously modulate the amplitude and propagation direction of the signal, which greatly improves the performance. However, each antenna needs to be equipped with a radio fr

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  • Power iteration hybrid beam forming method based on beam selection
  • Power iteration hybrid beam forming method based on beam selection
  • Power iteration hybrid beam forming method based on beam selection

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Embodiment Construction

[0036] The present invention provides a power iterative hybrid beamforming method based on beam selection, which can ensure that the performance is similar to that of the Orthogonal Matching Pursuit (OMP) algorithm and approach digital beamforming, while reducing the implementation complexity.

[0037] refer to figure 1 System block diagram, an embodiment of the present invention provides a power iterative hybrid beamforming method based on beam selection, which is applied in a wireless communication system, and the hybrid beamforming method includes the following steps:

[0038] Step 1. The transmitting and receiving ends of the wireless communication system exchange and save the codebook information;

[0039] This step includes the following substeps:

[0040] Step 1-1. Design codebooks P and Q for beam selection according to different system structures at the transceiver end;

[0041] Step 1-2, the transmitting and receiving ends exchange their own codebook information th...

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Abstract

The invention discloses a power iteration hybrid beam forming method based on beam selection, which comprises the following steps: firstly, selecting a group of best beam forming vectors from a codebook to form an analog domain beam forming matrix of a transmitting and receiving end by the transmitting and receiving end through carrying out beam phase control on a training sequence; and then basedon a power iteration mode, continuously iteratively updating the randomly generated initial digital domain beamforming matrix by utilizing the reciprocity of the obtained analog domain beamforming matrix and the channel, so that the initial digital domain beamforming matrix tends to be optimal. According to the method, the advantages of a beam selection method and a power iteration method are integrated, meanwhile, respective defects are overcome, the implementation complexity of hybrid beam forming is reduced, and the beam forming performance of a wireless communication system is improved.

Description

technical field [0001] The invention relates to the technical field of transmitting and receiving in a wireless communication system, in particular to a power iterative hybrid beamforming method based on beam selection. Background technique [0002] Beamforming technology based on large-scale antenna array is an important research content in wireless communication systems. It can improve the data transmission rate and effectively solve the serious problems of propagation loss and rain attenuation. Moreover, with the increase of carrier frequency, large-scale antennas are easy to miniaturize and integrate, which provides a guarantee for the development of large-scale antenna array technology. [0003] Beamforming increases system capacity and performance by focusing signals in desired directions. As a key technology in wireless communication systems, beamforming includes analog beamforming, digital beamforming and hybrid beamforming. Analog beamforming uses a network of pha...

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Application Information

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IPC IPC(8): H04B7/06H04B7/08
Inventor 黄鹤杨林徐帮元姜明
Owner SOUTHEAST UNIV
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