An Incremental Relay Method Applicable to Powerful Non-orthogonal Multiple Access Communication System
A non-orthogonal multiple access, communication system technology, applied in the field of incremental relay, can solve the problem that the interruption performance of the incremental cooperative non-orthogonal multiple access protocol has not been studied, and achieves improved interruption probability performance and system throughput. Effect
Active Publication Date: 2022-03-25
NORTHWEST NORMAL UNIVERSITY
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However, the outage performance of incremental cooperative non-orthogonal multiple access protocols in non-orthogonal multiple access networks based on wireless portable communication has not been studied
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[0027] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.
[0028] Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations thereof such as "includes" or "includes" and the like will be understood to include the stated elements or constituents, and not Other elements or other components are not excluded.
[0029] Our proposed cooperative non-orthogonal multiple access network based on wireless portable communication consists of three nodes, including a source node S and a remote user node U 1 (far from the source node), a near-end user node U 2 (closer to the source node is the relay node). where S→U 1 ,S→U 2 ,U 2 → U 1 The connection distances are denoted as d 1 , d 2 , d 3 , while the communication channel coeffici...
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The invention discloses an incremental relay method suitable for a non-orthogonal multiple access communication system with energy, comprising: a signal source sends a detection signal; a remote user judges whether the direct path supports the transmission of the target rate according to the detection signal, and sends the signal to the signal source. The source broadcasts the first feedback signal; the source receives the first feedback signal, and if it supports the transmission of the target rate, it uses the direct non-orthogonal multiple access method for information transmission in the first time slot and the second time slot; if the second time slot If the feedback signal does not support the transmission of the target rate, the energy collection status of the near-end user is judged; if the energy collected by the near-end user is less than the preset threshold value, the direct non-contact Orthogonal multiple access mode is used for information transmission; if the collected energy is greater than the preset threshold value, the cooperative non-orthogonal multiple access mode is used for information transmission. The incremental relay method provided by the invention can optimize the outage probability and throughput of non-orthogonal multiple access.
Description
technical field [0001] The invention relates to the technical field of wireless communication, in particular to an incremental relay method suitable for a non-orthogonal multiple access communication system with energy. Background technique [0002] At present, in the communication system, the relay nodes are mostly nodes with limited energy. In many cases, it is inconvenient or costly to charge the node or replace the battery. Therefore, how to prolong the service life of the communication system becomes a backup research hotspots. In addition, how to reduce energy consumption is also a hot issue in the communication industry in today's increasingly scarce energy. As a result, Simultaneous Wireless Information and Power Transfer (SWIPT) technology emerged as the times require. It is a new type of wireless communication. Wireless power transfer can transmit signals and energy at the same time, that is, when exchanging information with wireless devices At the same time, pro...
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IPC IPC(8): H04B7/155H04W28/06H04W28/18
CPCH04B7/155H04W28/06H04W28/18
Inventor 刘英挺高风张鑫吴坛坤王冠华沈建梅肖如意邓翔宇杨鸿武
Owner NORTHWEST NORMAL UNIVERSITY