Global energy efficiency optimization method based on hybrid precoding

An optimization method and precoding technology, applied in transmission monitoring, scattering propagation systems, electrical components, etc., can solve problems such as system performance impact, nonlinear characteristics of power amplifiers, unbalanced in-phase and quadrature branches, etc.

Pending Publication Date: 2022-07-15
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

However, low-cost components and equipment usually mean obvious hardware defects, such as nonlinear characteristics of power amplifiers, unbalanced in-phase and quadrature branches, phase noise, etc., which will affect the performance of the system
Even expensive and sophisticated components and equipment inevitably have certain non-ideal characteristics

Method used

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  • Global energy efficiency optimization method based on hybrid precoding
  • Global energy efficiency optimization method based on hybrid precoding
  • Global energy efficiency optimization method based on hybrid precoding

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Embodiment Construction

[0123] In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0124] The system parameters in this embodiment are shown in the following table:

[0125]

[0126] The system block diagram of the global energy efficiency optimization method proposed in this embodiment is as follows: figure 1 shown,

[0127] like figure 1 As shown, a hybrid precoding-based global energy efficiency optimization method disclosed in this embodiment, the specific implementation steps are as follows:

[0128] Step 1, the base station with hybrid precoding structure is configured with 30 antennas, 6 radio frequency links, and serves 4 single-antenna users;

[0129] In step 2, the hybrid precoding algorithm and the all-digital zero-forcing precoding algorithm are designed based on the ...

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Abstract

The invention discloses a global energy efficiency optimization method based on hybrid precoding, and belongs to the field of communication signal processing. Establishing a signal model based on hybrid precoding; the additive distortion noise expression is added in a received signal expression, the signal model is corrected, and the optimization prediction precision of the communication system is improved; analog precoding and digital precoding are respectively designed, and a joint optimization problem of the analog precoding and the digital precoding is converted into a univariate power distribution problem; the method comprises the following steps: designing digital precoding based on an equivalent channel matrix, processing a baseband signal in a digital precoding part by applying a low-dimension zero-forcing precoding method to obtain an expression of a received signal to interference plus noise ratio of a communication system, and simplifying a global energy efficiency optimization problem of a non-convex communication system by utilizing a lower bound of a target logarithmic function to obtain a global energy efficiency optimization result of the non-convex communication system. A fractional programming problem easy to process is obtained, and high-energy-efficiency hybrid optimization precoding is completed; according to the hybrid precoding method, the system energy efficiency can be maximized under the non-ideal hardware condition.

Description

technical field [0001] The invention relates to a global energy efficiency optimization method for a MIMO communication system based on hybrid precoding, and belongs to the field of communication signal processing. Background technique [0002] One of the key technologies of 5G wireless communication system is millimeter-wave communication technology. Because millimeter-wave signals have the characteristics of short wavelength and small antenna size, precoding technology can be used in base stations to configure large-scale antennas to improve system spectral efficiency. It is used to alleviate the problem of serious attenuation of the millimeter-wave channel path. However, in the existing MIMO communication system, each antenna in the all-digital precoding structure requires a radio frequency link to be configured at the same time. Due to the high power consumption and high cost of the radio frequency link, the configuration cost of large-scale antenna arrays is very high. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/0426H04B7/0456H04B7/22H04B17/00H04B17/336H04B17/373H04B17/391
CPCH04B7/0456H04B7/0426H04B7/22H04B17/0087H04B17/336H04B17/391H04B17/373
Inventor 杨梓艺丁旭辉李高阳陈嘉雯李佳宣赵得光周可歆张岳李谊升李昊涵梁博伟常添高静凰
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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