A method and system for multi-user cooperative communication based on wireless energy transmission
A technology of wireless energy transmission and multi-user cooperation, applied in radio transmission systems, transmission systems, wireless communications, etc. The effect of maximizing the total rate and wide practical application prospects
Active Publication Date: 2020-06-19
SOUTH CHINA UNIV OF TECH
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Problems solved by technology
However, in practical wireless communication systems, the source nodes are also energy-constrained (especially in wireless sensor networks). From this perspective, the existing communication schemes are obviously irrational
[0004] In addition, due to channel attenuation, the energy obtained through wireless energy transmission is often severely attenuated. If the collected energy is used for wireless information communication, it is often limited by low speed and short distance.
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[0028] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be further described in detail below in conjunction with the drawings and specific embodiments.
[0029] Such as figure 2 As shown, the novel multi-user cooperative communication system based on wireless energy transmission proposed by the present invention includes a relay, multiple communication source nodes and multiple corresponding communication destination nodes. All nodes are equipped with a single antenna. The present invention adopts time division technology at the relay.
[0030] Such as image 3 As shown, all nodes are equipped with a single antenna. For the above-mentioned system with K (K>=2) pairs of "source-destination" node pairs, the described workflow can be divided into K+1 time periods, starting from the 0th time period until the Kth time end of segment. ...
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The invention discloses a multi-user cooperative communication method and system based on wireless energy transmission. The multi-user cooperative communication method comprises the steps that a relay sends energy signals to all source nodes; and after collecting wireless energy, the source nodes send information to corresponding destination nodes with the help of the relay. The multi-user cooperative communication system comprises the relay, a plurality of source nodes and a plurality of destination nodes. The relay is used for carrying out wireless energy transmission and wireless information communication forwarding. The source nodes are used for collecting the wireless energy and sending wireless information through utilization of the collected wireless energy. The destination nodes are used for carrying out wireless information communication with the source nodes. According to the method and the system, a coverage rate and operation time of a communication system are greatly increased, the relay is used for supplying wireless power to the source nodes without built-in energy supply and forwarding the information of the source nodes, and the method is taken as a new wireless energy transmission communication method.
Description
technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a multi-user cooperative communication system and resource allocation method based on wireless energy transmission. Background technique [0002] With the rapid development of wireless communication technology, people's requirements for the coverage and running time of wireless communication network are increasing day by day. In order to improve the coverage of communication network, cooperative communication based on relay is a common technical solution. The use of relays can solve the problem of no direct path between communication parties due to geographical and other restrictions, thereby effectively improving the coverage of the communication network. In the process of wireless communication, the electromagnetic wave signal at the radio frequency terminal not only carries information, but also carries energy at the same time, so wireless devices can s...
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IPC IPC(8): H04W28/16H04W72/04H04B7/155
CPCH04B7/15592H04W28/16H04W72/04
Inventor 刘梦宇刘元
Owner SOUTH CHINA UNIV OF TECH