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, achieve the effect of improving spectrum efficiency, reducing complexity, and eliminating requirements
Active Publication Date: 2022-04-22
ANHUI UNIVERSITY
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[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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[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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The present invention provides a millimeter-wave massive MIMO hybrid precoding method and system based on the QGA-OMP algorithm. On the basis of the traditional OMP algorithm used in the research of millimeter-wave massive MIMO hybrid precoding, the QGA algorithm is used to simulate the natural evolution process , The characteristics of quickly searching the global optimal value, searching for the largest array response vector multiplied by the residual inner product, and obtaining the array response vector of the global optimal solution, so as to obtain the optimal baseband precoder and radio frequency precoding at the transmitter device, which eliminates the need for known candidate matrices and reduces computational complexity; at the same time, the array response vector of the global optimal solution obtained by the QGA algorithm makes the hybrid precoding performance of the present invention close to that of the optimal all-digital precoding Coding greatly improves the spectrum efficiency of the system.
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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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