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A Power Allocation Method for Distributed MISO System in Spatial Correlation Channel

A technology of spatial correlation and allocation method, applied in the field of mobile communication, to achieve the effect of simple calculation process

Active Publication Date: 2019-07-09
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0004] Purpose of the invention: In order to solve the above-mentioned technical problems, the present invention proposes a power distribution method of a distributed MISO system under a space-correlated channel. Power Allocation Problem for Optimal Energy Efficiency of Equational MISO System in Spatially Correlated Channels

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  • A Power Allocation Method for Distributed MISO System in Spatial Correlation Channel
  • A Power Allocation Method for Distributed MISO System in Spatial Correlation Channel
  • A Power Allocation Method for Distributed MISO System in Spatial Correlation Channel

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Embodiment Construction

[0040] The present invention will be further described below in conjunction with the accompanying drawings.

[0041] 1. Distributed MISO system model:

[0042] as attached figure 1 The model diagram of the distributed MISO system in the embodiment of the present invention is shown, and the distributed MISO system includes N remote antenna units scattered in the cell, denoted as RAU n (n=1, 2, . . . , N), each remote antenna unit is equipped with L antennas, and is connected to the central processing unit through a specific transmission channel. In view of the limited size of the mobile station in practice, only a single antenna is considered. definition for RAU n small-scale fading vector to the mobile station, where g υ，n is a 1×L-dimensional vector whose elements are independent and identically distributed complex Gaussian variables with O-mean and unit variance; Indicates Remote Antenna Unit RAU n The L×L index transmit correlation matrix, whose elements are Amon...

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Abstract

The invention discloses a method for power distribution of a distributed multi input single output (MISO) system under spatial correlated channels. A total transmitted power matrix of the distributed MISO system is taken as an optimization variable to construct an optimization model, and a solution of the optimization variable is solved in combination with fractional programming and a Lagrangian multiplier method; a Lagrangian multiplier is updated continuously through a gradient method, and thus energy efficiency of a distributed antenna system is maximum. According to the method, not only is the shortcoming that the ignorance of spatial correlation has an influence on system energy efficiency (EE) performances overcome, but also the method is simple, results are accurate, and the EE performances consistent with an exhaustive search method can be obtained on the premise of reducing calculated amount.

Description

technical field [0001] The invention belongs to the field of mobile communication, and relates to a resource allocation method of mobile communication, in particular to a power allocation method of a distributed MISO system under a space correlation channel. Background technique [0002] With the growth of business volume and continuous expansion of network capacity, the communication industry has gradually become a "big household" of energy consumption. In addition, the energy consumption of wireless communication networks not only brings huge cost and resource pressure, but also creates serious environmental problems (such as the carbon dioxide produced by energy consumption will aggravate the global warming effect). Traditional communication technologies mainly focus on the improvement of system spectral efficiency (SE, Spectral Efficiency), and pay less attention to energy conservation and environmental friendliness. However, excessive consideration of spectral efficienc...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/04H04W52/24H04W52/26H04W52/30H04W52/42
CPCH04B7/0426H04W52/242H04W52/267H04W52/30H04W52/42
Inventor 王莹虞湘宾王郝党小宇王丞储君雅
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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