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Energy efficiency optimization method for single-station multi-satellite MIMO top injection system

An optimization method and single-station technology, applied in transmission systems, radio transmission systems, energy reduction and other directions, can solve problems such as difficulty in solving energy efficiency optimization problems, and achieve the effect of improving energy efficiency

Active Publication Date: 2021-08-13
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP +1
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Problems solved by technology

[0007] This method fully considers the power consumption of the system, and derives the energy efficiency function of the MIMO system using Block Diagonalization (BD) precoding. In each satellite Under the constraints of the Quality of service (QoS) and the overall transmission power, the energy efficiency optimization problem of the single-station multi-satellite MIMO uplink system is mathematically modeled, and the problem is transformed using the fractional optimization theory, and the power is obtained by solving the dual problem The mathematical expression of the allocation matrix effectively solves the difficult problem of energy efficiency optimization under constrained conditions

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  • Energy efficiency optimization method for single-station multi-satellite MIMO top injection system
  • Energy efficiency optimization method for single-station multi-satellite MIMO top injection system

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Embodiment Construction

[0068] The purpose of the present invention is to provide an energy efficiency optimization method for a single-station multi-satellite MIMO system, which has small computational complexity and fast convergence speed, and can effectively solve the energy efficiency optimization method under multi-user MIMO represented by low-orbit satellites.

[0069] The energy efficiency optimization method of the single-station multi-satellite MIMO uplink system proposed by the present invention combines the advantage of fast convergence of the Dinkelbach method and the advantage of low complexity of the dual ascending method. The present invention firstly carries out mathematical modeling to the energy efficiency optimization problem of single-station multi-satellite MIMO up-note system under the limitation of each satellite's QOS and overall transmission power, and then utilizes the property of fractional optimization to transform the objective function in fractional form into an easy The ...

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Abstract

An energy efficiency optimization method for a single-station multi-satellite MIMO uploading system comprises the following steps: firstly, carrying out mathematical modeling on an energy efficiency optimization problem of the single-station multi-satellite MIMO uploading system under the limitation of QOS and total transmitting power of each satellite, then converting a target function in a fraction form into a target function in a subtrahend form which is easy to solve by utilizing the property of fraction optimization, and then obtaining a mathematical expression of a power distribution matrix through a knowledge solution dual problem of convex optimization, so that the problem that the energy efficiency optimization problem is difficult to solve under constraint conditions is effectively solved, and the practicability of the algorithm is improved.

Description

technical field [0001] The invention is an energy efficiency optimization method suitable for multi-user MIMO represented by low-orbit satellites, and particularly relates to an energy efficiency optimization method based on a single base station multi-satellite MIMO up-note model. Background technique [0002] With the development of communication technology, people's demand for data transmission rate is getting higher and higher. Low Earth Orbit Satellite (LEOS) has become an important link in the integrated communication of air, space, earth and sea due to its advantages of being close to the ground, short communication delay, and high data transmission rate. [0003] In low orbit satellite communication system, power distribution technology is an indispensable part. The simplest scheme of power allocation technology is to allocate water-filling (WF) power to different satellites according to Channel State Information (CSI) to maximize the transmission rate. WF is a cla...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/185H04B7/0426H04B7/0456H04W72/04
CPCH04B7/18513H04B7/0426H04B7/0456H04W72/0473Y02D30/70
Inventor 唐成凯蔚保国张娟张怡陈沛林张玲玲
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP