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Precoding matrix generating method and precoding matrix generating device

A technology of precoding matrix and generating device, applied in wireless field

Active Publication Date: 2021-01-15
CHINA MOBILE COMM LTD RES INST +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

To sum up, it is still a problem to be solved how to obtain a high spectral efficiency performance in the case of a high spectral efficiency scheme that cannot obtain a perfect CSIT

Method used

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  • Precoding matrix generating method and precoding matrix generating device
  • Precoding matrix generating method and precoding matrix generating device
  • Precoding matrix generating method and precoding matrix generating device

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Embodiment Construction

[0053] In order to make the technical problems, technical solutions and advantages to be solved by the embodiments of the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0054] Embodiments of the present invention can provide a method for generating a precoding matrix and a device for generating a precoding matrix in transmit diversity and MU-MIMO hybrid transmission modes.

[0055] Embodiments of the present invention firstly provide a method for generating a precoding matrix, such as figure 1 shown, including:

[0056] Step 101: Select a preset number of transmitting antenna ports from multiple transmitting antenna ports at the transmitting end to form a subset of transmitting antenna ports;

[0057] Step 102: Calculating a first multi-user MIMO preprocessing matrix used by users on the transmit antenna port subset of the first resource;

[0058] Step 103: Obtain a second multi-user MIMO preprocess...

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Abstract

Provided by the present disclosure are a method for generating a precoding matrix and a device for generating a precoding matrix, the method comprising: selecting a predetermined number of transmission antenna ports from among a plurality of transmission antenna ports of a transmitting terminal, and forming transmission antenna port subsets; calculating a first multi-user multiple-input multiple-output preprocessing matrix that is used on the transmission antenna port subset of a first resource by a user; obtaining a second multi-user multiple-input multiple-output preprocessing matrix used on the transmission antenna port subset of a second resource by the user according to the first multi-user multiple-input multiple-output preprocessing matrix; and obtaining a precoding matrix used on the plurality of transmission antenna ports in a hybrid transmission mode by the user according to the first multi-user multiple-input multiple-output preprocessing matrix and the second multi-user multiple-input multiple-output preprocessing matrix.

Description

technical field [0001] The present invention relates to the field of wireless technologies, in particular to a method for generating a precoding matrix and a device for generating a precoding matrix. Background technique [0002] With the development of global high-speed rail technology, my country's high-speed rail has also achieved rapid development. By the end of 2016, the operating mileage of my country's high-speed rail has reached 22,000 kilometers, with more than 5 billion passengers. On rail transit stations and lines, the mobile phone data traffic of passengers is positively correlated with the time in transit. It is predicted that the annual data traffic in the high-speed rail scenario will exceed 2 trillion MB. Therefore, high-speed rail communication has developed into a very important mobile communication scenario in China and even in the world. [0003] MIMO (Multiple-Input Multiple-Output, multiple input multiple output) transmission mode is TM2 (transmissio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/0452H04B7/0456
CPCH04B7/0452H04B7/0456
Inventor 王森韩双锋左君徐国珍
Owner CHINA MOBILE COMM LTD RES INST
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