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Millimeter wave large-scale MIMO hybrid precoding method and system based on QGA-OMP algorithm

A precoding and millimeter wave technology, applied in transmission systems, radio transmission systems, electrical components, etc., can solve problems such as high computational complexity

Active Publication Date: 2021-07-06
ANHUI UNIVERSITY
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Problems solved by technology

[0006] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a method and system for millimeter-wave massive MIMO hybrid precoding based on the QGA-OMP algorithm, which is used to solve the problems of the OMP algorithm in the prior art when performing hybrid precoding. The computational complexity of encoding processing is high, and the selected array response vector is not necessarily the problem of the global optimal solution

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  • Millimeter wave large-scale MIMO hybrid precoding method and system based on QGA-OMP algorithm
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  • Millimeter wave large-scale MIMO hybrid precoding method and system based on QGA-OMP algorithm

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[0044] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

[0045]It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic ideas of the present invention, and only the components related to the present invention are shown in the drawings rather than the number, shape and size of components ...

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Abstract

The invention provides a millimeter wave large-scale MIMO hybrid precoding method and system based on a QGA-OMP algorithm. On the research basis that a traditional OMP algorithm is used for millimeter wave large-scale MIMO hybrid precoding, the characteristics of simulating a natural evolution process and quickly searching a global optimal value by using the QGA algorithm are utilized, an array response vector which multiplies by a residual inner product to the maximum is searched, and array response vector of the globally optimal solution is obtained, so that the optimal baseband precoder and radio frequency precoder are obtained at the transmitting end, the requirement for a known candidate matrix is eliminated, and the calculation complexity is reduced; meanwhile, the array response vector of the globally optimal solution is obtained by the QGA algorithm, so that the hybrid precoding performance is close to the optimal full-digital precoding, and the spectrum benefit of the system is greatly improved.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a millimeter wave massive MIMO hybrid precoding method and system based on the QGA-OMP algorithm. Background technique [0002] The fifth-generation communication (5G) can provide users with higher data rates and the connection of various IoT devices. Compared with 4G, its spectrum efficiency is increased by 5 to 15 times, and its energy efficiency and cost efficiency are increased by nearly 100 times. It has become an information The main direction of development will penetrate into all fields of the future society. [0003] In the existing technology, massive multiple-input multiple-output (MIMO) technology and millimeter wave (mmWave) communication technology are the key technologies of 5G, and hybrid precoding technology is adopted, that is, precoding processing is divided into baseband precoding (digital precoding) Processing and radio frequency preco...

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Application Information

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IPC IPC(8): H04B7/0456
CPCH04B7/0456
Inventor 许耀华徐惠明王翊蒋芳刘瑜柏娜宛新文
Owner ANHUI UNIVERSITY