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A Non-Orthogonal Multiple Access Method Based on Reconfigurable Antenna Array

A non-orthogonal multiple access and access method technology, applied in the field of information and communication engineering, to achieve the effects of easy acquisition, simple algorithm and good scalability

Active Publication Date: 2020-07-14
ZHEJIANG UNIV
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  • Application Information

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Problems solved by technology

[0004] At present, the research on non-orthogonal multiple access technology in beam domain hybrid precoding architecture mainly focuses on the scheme design based on lens antenna array, and there is no literature analysis on non-orthogonal multiple access based on reconfigurable antenna array This scheme needs to comprehensively consider the multi-antenna feed of the reconfigurable antenna array and the power allocation between non-orthogonal users, so as to further increase the number of multi-user access for beam-domain hybrid precoding

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  • A Non-Orthogonal Multiple Access Method Based on Reconfigurable Antenna Array
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  • A Non-Orthogonal Multiple Access Method Based on Reconfigurable Antenna Array

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Embodiment Construction

[0033] The present invention will be described in further detail below with reference to the accompanying drawings and examples of implementation. It should be noted that the embodiments of the present invention are not limited thereto.

[0034] figure 1 It is a schematic diagram of the principle of generating n beams through one radio frequency link for the reconfigurable antenna array by means of multi-channel tapered slot antenna feed and spherical lens, in which the beam selection network is divided by the power division factor p n Controlling the transmit power of each beam in , p n Calculated by step 7 of the following method, n=1,...,N.

[0035] figure 2 It is a schematic diagram of non-orthogonal multiple access in the beam domain implemented by a reconfigurable antenna array (the illustration includes two beams, respectively accessing 2 users and 3 users). The specific steps of non-orthogonal multiple access in the whole beam domain are as follows:

[0036] Metho...

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Abstract

The invention discloses a non-orthogonal multiple access method for a reconfigurable antenna array. Involving the reconfigurable antenna array technology, non-orthogonal multiple access technology, and physical layer power distribution technology of the millimeter wave communication system, the present invention designs a scheme that uses a single RF link to simultaneously transmit multiple data streams, which greatly reduces the System hardware cost and power consumption. The joint beam and user power distribution optimization strategy proposed by the present invention can realize optimal power configuration between multiple beams and users, and optimize the total rate of the system under the condition of satisfying the user rate threshold. The non-orthogonal user sorting of the power distribution algorithm realized by the present invention only depends on the rate threshold and channel information of the users, and these information are easy to obtain in the initialization stage, the sorting is simple and easy to realize, and has good scalability.

Description

technical field [0001] The invention belongs to the field of information and communication engineering, and relates to the reconfigurable antenna array technology, the non-orthogonal multiple access technology and the power distribution technology of the physical layer of the millimeter wave communication system. Non-orthogonal multiple access method for arrays to increase the number and power efficiency of multi-user transmissions in mmWave communication systems. Background technique [0002] Non-orthogonal multiple access is a multi-user transmission technology. By accommodating more user resources in a non-orthogonal manner within the same time-frequency resource, the number of access users and spectral efficiency can be significantly improved. Non-orthogonal multiple access technology is one of the key technologies of 5G networks, which can be used to solve the rapidly growing large-scale data demand brought about by the mobile Internet and the Internet of Things. [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/02H04W72/04H04W72/08
CPCH04W24/02H04W72/046H04W72/0473H04W72/542Y02D30/70
Inventor 梁雪松张朝阳洪涛
Owner ZHEJIANG UNIV
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