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Hybrid pre-coding method based on row vector optimization

A row vector and precoding technology, applied in the field of hybrid precoding based on row vector optimization, can solve problems such as the difficulty of pure digital precoding and the high complexity of hybrid precoding schemes

Active Publication Date: 2019-02-01
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0005] In view of the difficulty in applying pure digital precoding to large-scale antenna arrays, the purpose of the present invention is to provide a hybrid precoding method based on row vector optimization, which aims to solve the problem of reducing the existing hybrid precoding scheme under the fully connected structure. high complexity problem

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[0044] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0045] Such as figure 1 As shown, we designed a hybrid beamforming method based on row vector optimization. The flow chart of this implementation case is shown in figure 2 shown, including the following steps:

[0046] Step 1. Establish the hybrid precoding problem model of millimeter wave MIMO system;

[0047] Step 2. Calculate the optimal precoding matrix according to the channel information, and randomly generate the simulated precoding matrix;

[0048] Step 3. The transmitting end solves the digital precoding matrix under the framework of alternate optimization;

[0049] Step 4. Under the ...

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Abstract

The invention proposes a hybrid beamforming method based on row vector optimization. The algorithm comprises the following steps: step a, establishing a hybrid pre-coding problem model of a millimeterwave MIMO system; step b, calculating an optimal pre-coding matrix by a transmitting end according to channel information and randomly generating an analog pre-coding matrix; step c, solving a digital pre-coding matrix by the transmitting end under an alternately optimized frame; step d, solving the analog pre-coding matrix by the transmitting end under the alternately optimized frame by using amanifold optimization method; and step e, outputting digital pre-coding and analog pre-coding of a transceiving end. The method proposed by the invention can be used for solving the hybrid pre-codingproblem in the millimeter wave MIMO system under multiple situations. The proposed algorithm can achieve higher spectral efficiency with lower complexity, and has certain innovation and practicability.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a hybrid precoding method based on row vector optimization. Background technique [0002] With the continuous advancement of communication technology, the capacity of wireless networks has been greatly increased to meet the demands of high data rate applications over the years. To improve spectral efficiency, some physical layer techniques, such as multiple-input multiple-output (MIMO), channel coding and interference alignment, have been applied to existing communication systems. In addition, the upcoming 5G network will also use ultra-dense deployment and Radio Access Integration Technology (RAT). However, the spectrum resources that are about to be exhausted limit the further improvement of network capacity. Therefore, developing new vacant frequency bands for future 5G wireless communication systems becomes a crucial task. [0003] As one of the key technologi...

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Application Information

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IPC IPC(8): H04B7/0413H04B7/0456H04B7/06
CPCH04B7/0413H04B7/0456H04B7/0626
Inventor 邹卫霞王晔
Owner BEIJING UNIV OF POSTS & TELECOMM
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