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Single-bit quantization precoding method based on APGM method

A precoding, single-bit technology, applied in the field of single-bit quantization precoding, can solve problems such as slow convergence of iteration times, difficult discrete combinatorial optimization problems, etc., achieve fast iteration and convergence, achieve iteration and convergence, and computational efficiency high effect

Pending Publication Date: 2022-01-11
JIANGSU UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention provides a single-bit quantitative precoding method based on the APGM method to solve the technical problems that the discrete combination optimization problem in the prior art is difficult to solve and the convergence speed of iterations is slow

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  • Single-bit quantization precoding method based on APGM method
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  • Single-bit quantization precoding method based on APGM method

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[0043] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0044] Present embodiment is the process that the inventive method is simulated in MATLAB, comprises the following steps:

[0045] Step 1: Set up in a single-cell massive MU-MIMO downlink system with N antenna base stations (BS), which simultaneously provides services for M single-antenna users, and input the vector in the base station Where θ is the conste...

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Abstract

The invention discloses a single-bit quantization precoding method based on an APGM method, and relates to a 1-bit DAC precoding algorithm based on infinite norm square relaxation, and aims to solve the problem of overhigh calculation complexity in the infinite norm square relaxation problem with the advantage of high calculation efficiency. And only simple matrix and vector operation and a near-end operator for searching infinite norm square are needed in each iteration. According to the precoding algorithm, rapid iteration and convergence can be realized, and meanwhile, the error rate can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a single-bit quantized precoding method based on the APGM method. Background technique [0002] The constant envelope (CE) precoding design problem in massive multi-user multiple-input multiple-output (MU-MIMO) has become one of the core issues in the fifth generation (5G) communication technology, because CE precoding can avoid expensive hardware Cost and power-hungry base stations with a large number of antennas. In order to design CE precoding, it is necessary to solve the non-convex combinatorial optimization problem by jointly optimizing the precoding vector and the precoding factor. However, the corresponding optimization problem is NP-hard and difficult to solve. [0003] Some precoding methods have been proposed to approach the performance of DPC when the channel state information (CSI) is known acausally. However, the complexity of these precoding methods is sti...

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Application Information

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IPC IPC(8): H04B7/0452H04B7/0456
CPCH04B7/0452H04B7/0456Y02D30/70
Inventor 王亚军刘一菲朱炎丁新豪张天赫张垚鑫
Owner JIANGSU UNIV OF SCI & TECH