Carrier wave and power resource allocation method for multi-unmanned aerial vehicle OFDM system

A multi-drone, distribution method technology, applied in the field of communication, can solve the problems of low delay characteristics, the carrier cannot participate in the dynamic distribution of the carrier, etc., and achieve the effect of improving the total transmission rate

Active Publication Date: 2019-06-18
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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AI Technical Summary

Problems solved by technology

The transmission of these signals has low-latency characteristics, so their corresponding carriers cannot participate in the dynamic allocation of carriers
[0003] In view of the above problems, it can be seen that there is a lack of allocation methods in the prior art that can realize fast and efficient allocation of carrier resources while satisfying system constraints

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  • Carrier wave and power resource allocation method for multi-unmanned aerial vehicle OFDM system
  • Carrier wave and power resource allocation method for multi-unmanned aerial vehicle OFDM system
  • Carrier wave and power resource allocation method for multi-unmanned aerial vehicle OFDM system

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Embodiment Construction

[0031] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, and Not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0032] figure 1 It is a schematic flow chart of an embodiment of the present invention, including the following steps:

[0033] (1) Obtain the number K of users who currently have resources to be allocated in the multi-UAV OFDM system; obtain the total number N of currently available carriers in the multi-UAV OFDM system, and classify the currently available N carriers into a carrier set U; for ea...

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Abstract

The invention provides a carrier wave and power resource allocation method for a multi-unmanned aerial vehicle OFDM system, and the method comprises the steps: obtaining available carrier wave resources of the system, calculating the channel weight of each user on each carrier wave, carrying out the descending order of all carrier waves for each user according to the channel weight, and forming ato-be-selected carrier wave set of the user; for each carrier wave, setting a carrier wave starting condition at the position of the to-be-selected carrier wave collection type of each user, and distributing the carrier wave to the user meeting the starting condition; and according to an allocation result of the enabled carrier resources, acquiring transmission power resources corresponding to theenabled carrier resources in the system, and allocating the transmission power resources to users in the system. On the premise of meeting system constraint conditions, carrier wave and power resource distribution can be rapidly completed, and the total transmission rate of the system is remarkably increased.

Description

technical field [0001] The invention relates to communication technology, in particular to a method for allocating carrier and power resources of a multi-unmanned aerial vehicle OFDM system. Background technique [0002] In recent years, due to its high mobility and low cost, UAVs have been widely used in data collection, communication relay and other fields. In the above tasks, the UAV transmits a large amount of data, and it is necessary to use a transmission method with a high transmission rate such as Orthogonal Frequency Division Multiplexing (OFDM for short). In a multi-UAV OFDM system, the number of available carriers is often limited, and the channel conditions of carriers also change with environmental factors. Therefore, in the system, the allocation of carriers and transmission power is not fixed, but must be dynamically allocated. Existing resource allocation methods for UAV communication systems often need to use convex optimization techniques (such as sub-grad...

Claims

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Application Information

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IPC IPC(8): H04W72/04
Inventor 黄洋管鑫吴启晖胡田钰江志炜
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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