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Relay node selection method with guaranteed global bit error rate performance in cooperative communication

A relay node and cooperative communication technology, applied in wireless communication, access restrictions, electrical components, etc., to achieve the effect of ensuring accuracy

Active Publication Date: 2019-04-26
NORTHEASTERN UNIV LIAONING
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The above two schemes are relative to the improvement of information transmission reliability, and the consideration of influencing factors is one-sided. Therefore, there are certain limitations to the improvement of information transmission bit error rate performance

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  • Relay node selection method with guaranteed global bit error rate performance in cooperative communication
  • Relay node selection method with guaranteed global bit error rate performance in cooperative communication
  • Relay node selection method with guaranteed global bit error rate performance in cooperative communication

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Embodiment Construction

[0029] The embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0030] The relay node selection method that can guarantee the global bit error rate performance in cooperative communication in this embodiment is used to select a relay node for each transmission pair in the single-source, multi-purpose, and multi-relay wireless communication process. Single-source multi-purpose multi-relay wireless communication system model, such as figure 1 As shown, a source node S sends information, and multiple destination nodes D receive information. There is a direct link between the source node and each destination node. For the sake of clarity in the figure, figure 1 The through link is not shown in the figure. The ultimate goal of this embodiment is to select an optimal relay node from the candidate relay set for each destination node D or each information transmission pair to participate in cooperative transmi...

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Abstract

A relay node selection method that can ensure global bit error rate performance in cooperative communications belongs to the field of reliable transmission of wireless communications. Randomly generate the channel coefficient matrix A of the direct link corresponding to each transmission pair, the channel coefficient matrix B between the source node and the candidate relay node, and the channel coefficient matrix C from the candidate relay node to the destination node; according to the direct link Sort the transmission pairs sequentially from low to high channel quality; according to the relationship between the number of candidate relay nodes n and the candidate relay node threshold δ, select m information transmission pairs one by one according to the sorting order of the information transmission pairs. Its respective current optimal relay node; each transmission pair uses its respective optimal relay node for information transmission. In the relay node selection process, the channel quality of the two channels corresponding to each candidate relay node is comprehensively considered, and the reliability of information transmission of the entire network is measured at the same time, while ensuring the global reliability and global bit error rate performance of information transmission.

Description

technical field [0001] The invention belongs to the field of reliable transmission of wireless communication, and in particular relates to a relay node selection method which can guarantee the performance of global bit error rate in cooperative communication. Background technique [0002] In wireless communication technology, the wireless channel has fading characteristics, so that the destination node cannot receive the information sent by the source node with zero bit error rate, which limits the communication quality of the wireless channel. According to the uncorrelated characteristics of independent samples of the same signal in the wireless propagation environment, the existing diversity technology can compensate the fading channel loss, and then use a certain signal combination technology to improve the received signal, so as to resist the adverse effects caused by fading. Multiple Input Multiple Output antenna technology (Multiple Input Multiple Output, MIMO) just us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W40/12H04W40/22H04W48/20
CPCH04W40/12H04W40/22H04W48/20
Inventor 赵玉丽郭丽朱志良于海张伟殷洪建高祥李姗姗
Owner NORTHEASTERN UNIV LIAONING
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