Method and device for optimizing information transmission rate of wireless communication system
A technology of information transmission rate and wireless communication system, applied in wireless communication, radio relay system, radio transmission system, etc., can solve the problems of communication obstruction, increase deployment cost and hardware complexity, etc., and achieve the effect of increasing information transmission rate
Active Publication Date: 2021-09-24
NANJING UNIV OF POSTS & TELECOMM
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[0002] Although 5G introduces new technologies, such as large-scale multiple-input multiple-output technology and millimeter-wave communication technology, it will increase the deployment cost and hardware complexity. Therefore, the smart reflector is proposed as a special relay, specifically In other words, when the user communicates with the base station, the communication is blocked due to the occlusion of houses, human bodies, and walls. A smart reflective surface can be deployed between the two as a passive relay node to establish a virtual line-of-sight connection to avoid the communication between them. block
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[0064] The present invention will be further described below in conjunction with specific embodiments. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.
[0065] An embodiment of the present invention provides an information transmission rate optimization method, which is applied to a wireless communication system, such as figure 1 As shown, the wireless communication system includes a multi-antenna base station, a single-antenna user, and multiple distributed intelligent reflectors deployed in scenarios such as buildings and aerial drones. Among them, the base station is equipped with L root antenna, the user node is equipped with a single antenna, and the smart reflector is M , each smart reflector contains N a reflection unit.
[0066] when the first m A smart reflector is connected to the wireless communication system, assuming that the first...
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The invention discloses a method and device for optimizing the information transmission rate of a wireless communication system. The wireless communication system includes a multi-antenna base station, a single-antenna user, and multiple distributed intelligent reflectors deployed in scenarios such as buildings and aerial drones. surface, where the intelligent reflective surface acts as a passive relay node to realize wireless transmission. The method includes: obtaining the channel gain reflected by the base station through the direct connection and the smart reflector; based on the obtained channel gain, alternately optimizing the active beamforming vector of the base station and the passive beamforming matrix of each smart reflector to obtain the base station The information transmission rate from each intelligent reflective surface to the user; select the intelligent reflective surface that maximizes the information transmission rate for information transmission. The invention optimizes the active and passive hybrid beam forming, selects a suitable intelligent reflection surface to provide auxiliary links for users, and improves the transmission rate of the system.
Description
technical field [0001] The invention relates to a method and device for optimizing the information transmission rate of a wireless communication system, belonging to the field of wireless communication. Background technique [0002] Although 5G introduces new technologies, such as large-scale multiple-input multiple-output technology and millimeter-wave communication technology, it will increase the deployment cost and hardware complexity. Therefore, smart reflectors are proposed as a special relay. Specifically, In other words, when the user communicates with the base station, the communication is blocked due to the occlusion of houses, human bodies, and walls. A smart reflective surface can be deployed between the two as a passive relay node to establish a virtual line-of-sight connection to avoid the communication between them. block. [0003] The smart reflector is a brand-new technology. By integrating a large number of low-cost passive components on the plane, it inte...
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IPC IPC(8): H04B7/145H04B7/155H04B7/06H04W24/02
CPCH04B7/145H04B7/1555H04B7/0617H04W24/02H04B7/04013
Inventor 朱佳李菲菲邹玉龙
Owner NANJING UNIV OF POSTS & TELECOMM