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Large-scale MIMO two-layer user-oriented selection method

A large-scale, user-friendly technology that can be used in diversity/multi-antenna systems, space transmit diversity, electrical components, etc., to solve problems such as low transmission rates and differences, and achieve high quality of service.

Active Publication Date: 2018-09-14
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, different users may have different requirements for service quality. For example, users need high quality of service to watch high-definition video, while users only need a low transmission rate to receive text mail.

Method used

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  • Large-scale MIMO two-layer user-oriented selection method
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  • Large-scale MIMO two-layer user-oriented selection method

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Embodiment Construction

[0037] The invention discloses a large-scale MIMO two-layer user-oriented selection method, which can realize that the transmission rate of the priority user must be higher than that of the common user.

[0038] In order to achieve the above goals, as figure 1 Shown, the present invention adopts following technical scheme:

[0039] The massive MIMO two-layer multi-user directional antenna selection method includes the following steps:

[0040] Step S100: Model massive MIMO, and the transmitting end acquires channel information between the transmitting antenna and the receiving antenna;

[0041]Step S200: Obtain a zero-forcing (ZF) linear precoding matrix according to the channel matrix; use the obtained precoding matrix to precode the transmitted signal;

[0042] Step S300: Obtain user sets of different levels, perform user-oriented antenna selection based on norms, and establish an objective function;

[0043] Step S400: Solve the objective function to obtain the best resu...

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Abstract

The invention provides a large-scale MIMO (Multiple Input Multiple Output) two-layer user-oriented selection method, comprising: a first step of performing modeling for large-scale MIMO, enabling a transmitting end to acquire channel information between transmitting antennas and receiving antennas; a second step of obtaining a zero-forcing linear pre-coding matrix according to a channel matrix, and performing pre-coding for a transmitting signal by using the obtained pre-coding matrix; a third step of acquiring sets of different levels of users, and establishing an objective function; and a fourth step of solving the objective function so as to obtain the optimal transmitting antenna selection result. The large-scale MIMO two-layer user-oriented selection method of the invention has the beneficial effects that: antenna selection is performed based on service quality of users, thus the problem that different requirements of different users for service quality are not taken into consideration in a conventional method can be solved, and the service quality of priority users can be higher than the service quality of normal users.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a large-scale MIMO layer-2 user-guided selection method. Background technique [0002] Multiple-input Multiple-output (MIMO) technology is the core technology of the fifth generation (5G, fifth-generation) mobile communication, which has the advantages of high capacity, high reliability, green and low power consumption, and does not require Additional transmit power and spectrum resources are increased. A MIMO system consists of a multi-antenna transmitter and a multi-antenna receiver. By adding more antennas, more degrees of freedom (in addition to time and frequency dimensions) can be provided in the wireless channel to apply more information data. [0003] In communication, multi-user MIMO (Multi-user MIMO, MU-MIMO) refers to a base station equipped with multiple antennas to provide communication services for multiple users at the same time, where each user is...

Claims

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Application Information

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IPC IPC(8): H04B7/0452H04B7/0456H04B7/06
CPCH04B7/0452H04B7/0456H04B7/0608
Inventor 张沛昌杨丽鲜黄磊张基宏
Owner SHENZHEN UNIV