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Wireless channel state information collection method

A wireless channel state and acquisition method technology, applied in the field of wireless channel state information acquisition, can solve problems such as difficulty in ensuring communication reliability, and achieve the effect of overcoming rapid change

Active Publication Date: 2020-01-17
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

However, from the perspective of simulation results, the performance of the ESN algorithm in UAV communication scenarios is still difficult to guarantee the reliability of communication.

Method used

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  • Wireless channel state information collection method
  • Wireless channel state information collection method
  • Wireless channel state information collection method

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Embodiment Construction

[0014] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

[0015] Theoretically, the propagation path and time of radio waves determine the channel state information. If the transmitter and receiver are both in a mobile state, a considerable Doppler frequency offset will be generated, and the channel state will change rapidly, and the channel state information will change quickly. The amount of data generated by changes is large. The prediction of these data is essentially a mathematical regression problem. When ELM deals with regression problems, it has the characteristics of strong generalization and fast learning. The prediction network learns these channel state data The data features can be extracted, and then the data change trend can be quickly and effectively predicted. Based on these prior knowledge, we optimized...

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Abstract

A wireless channel state information collection method belongs to the technical field of wireless and mobile communication, and is characterized by comprising the following steps: performing unified format processing on a large number of channel information data samples obtained by channel estimation to form training samples; inputting the sample data into a prediction neural network to obtain a group of optimal parameters for the data set; judging to obtain the actual state of the current prediction precision by the aid of the prediction effect, and if the prediction precision does not meet the requirements, training to further optimize the parameters; and the channel state information obtained by predicting the network is applied to a sending end. The second characteristic of the methodis that the provided adaptive structure extreme learning machine (ASELM) algorithm can be used to adjust the change characteristics of the structure matching channel data of the network in a self-adaptive manner.

Description

Technical field [0001] The invention relates to a method for acquiring wireless channel state information, which belongs to the technical field of wireless and mobile communication. Background technique [0002] Take the drone communication scenario as an example. In recent years, drones have been widely used in many areas of social production and life. In some joint detection missions, in order for the drone group to cooperate more effectively, some data needs to be shared between the drones. Therefore, there are more communication requirements between the drones. Channel state information is a key parameter for communication and transmission between UAVs. However, the channel state changes rapidly in the mobile state. Due to the feedback delay in the channel estimation process, the obtained channel state information has an out-of-date problem, which will cause communication interruption. Therefore, high dynamics poses a huge challenge to channel estimation, and channel predic...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B17/373H04L25/02G06N3/08
CPCH04B17/373H04L25/0202G06N3/08
Inventor 高晖张洪星粟欣
Owner BEIJING UNIV OF POSTS & TELECOMM
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