A secure energy efficiency optimization method for wireless power supply communication network
A communication network and wireless power supply technology, applied in radio transmission systems, electrical components, transmission monitoring, etc., can solve problems such as low efficiency of wireless energy transmission, and achieve the effects of ensuring reasonable utilization, improving efficiency and performance, and ensuring safety
Inactive Publication Date: 2019-07-09
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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[0005] Purpose of the invention: In order to solve the technical problems of low wireless energy transmission efficiency, the balance between wireless energy and information transmission, and information security in the wireless power supply communication network, the present invention proposes a method for optimizing the security energy efficiency of the wireless power supply communication network. Optimize the joint design of information transmission time allocation and information beam to effectively improve the energy efficiency of system security
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[0024] The present invention will be further described below in conjunction with the accompanying drawings.
[0025] like figure 1 Shown is the system model diagram in the embodiment of the present invention, the system model is composed of an energy source node ES, an information source node IS, a destination receiving node D and an eavesdropping node Eav. In this embodiment, except that the information source node IS uses multiple antennas N t In addition, each other node uses a single antenna and uses a half-duplex working mode. It is assumed that all channels experience independent flat Rayleigh fading, which remains unchanged within a time slot, and the source node can obtain global channel state information. For convenience, the channel vector from the energy source node to the information source node is denoted as g, and the channel vector from the information source node to the destination receiving node and eavesdropping node is denoted as h d , h e . The working...
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The invention provides a safe energy efficiency optimization method for a wireless power supply communication network. The method comprises the steps that an energy source node sends energy signals to an information source node; the information source node transforms the received signals into energy; and the information source node sends information signals to a destination receiving end by employing the received energy, but meanwhile, another sniffering node in a network can receive the information signals due to an open feature of the wireless network, thereby sniffering the information. According to the method, an optimization model for a time slot distribution ratio and normalized information beams is established, the purpose of maximizing the safe energy efficiency of the wireless power supply communication network is taken as an optimization problem, and joint optimization is carried out on the time slot distribution ratio and the normalized information beams. Compared with a traditional single variable optimization method, the method has the advantage that the performance is greatly improved.
Description
technical field [0001] The invention belongs to the technical field of wireless communication, in particular to a safety energy efficiency optimization method of a wireless power supply communication network. Background technique [0002] Wireless energy transfer technology has attracted widespread attention because it can extend the life of communication networks in a relatively simple manner. Especially in harsh communication environments such as battlefields and underwater, wireless energy transmission technology is particularly important. Therefore, the optimal design of a wireless power supply communication system that comprehensively uses wireless energy transmission and information transmission has become a hot issue in the field of wireless energy transmission. [0003] For wireless power communication, there are many challenging problems. First, energy transfer efficiency must be effectively improved. Compared with wired energy transmission, wireless energy trans...
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IPC IPC(8): H04B7/0408H04B17/336
CPCH04B7/0408H04B17/336
Inventor 吴亚男桑燃陈晓明
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS