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Wireless multi-hop router network transmission method based on fusion of MIMO and PNC (physical-layer network coding)

A network transmission, wireless multi-hop technology, applied in the transmission system, wireless communication, digital transmission system, etc., can solve problems such as lack of

Active Publication Date: 2014-03-19
NORTHEASTERN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are obvious differences between these two technologies. How to integrate the two technologies to greatly improve the performance of the system is the most critical issue, but the current research on this aspect is still relatively lacking.

Method used

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  • Wireless multi-hop router network transmission method based on fusion of MIMO and PNC (physical-layer network coding)
  • Wireless multi-hop router network transmission method based on fusion of MIMO and PNC (physical-layer network coding)
  • Wireless multi-hop router network transmission method based on fusion of MIMO and PNC (physical-layer network coding)

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Embodiment Construction

[0076] An embodiment of the present invention will be further described below in conjunction with the accompanying drawings.

[0077] The essence of the present invention's process of realizing interference-free transmission between users is the process of physical layer network coding (PNC) on the basis of using MIMO technology in user nodes and relay nodes, so the whole transmission process is still the transmission process of PNC, and The general principle model and transmission process of PNC as figure 1 As shown, in the first time slot, the user node transmits the signal it wishes to transmit (s A ,s B ) to the relay node; the relay node processes the received mixed signal through mapping and coding, and broadcasts it to the user node used in the second time slot, and the user node will extract the required information from the received mixed signal Signal.

[0078] A wireless multi-hop network transmission method based on MIMO and PNC fusion, the method flow chart is ...

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Abstract

The invention provides a wireless multi-hop router network transmission method based on fusion of MIMO and PNC (physical-layer network coding), and belongs to the technical field of wireless relay communication. In the method, on the basis of a single-relay multidirectional channel system, two situations, i.e., whether user node antenna number and relay node antenna number satisfy constraint conditions, are fully considered, then the fusion of MIMO and PNC is carried out, by use of a MIMO technology, a multipath propagation environment is converted into a user friendly factor, by use of space multiplexing gain provided by a MIMO channel, the channel capacity is enhanced, and at the same time, by use of diversity gain provided by the MIMO channel, the transmission reliability is improved; and at the same time, the utilization of the PNC further helps to reduce time slot of signal transmission so that the system throughput is improved. Based on the fusion of two technologies, the system throughput and reliability are improved to a quite large extent.

Description

technical field [0001] The invention belongs to the technical field of wireless relay communication, and in particular relates to a wireless multi-hop routing network transmission method based on MIMO and PNC integration. Background technique [0002] With the rapid development of wireless multi-hop networks, the problems of network capacity and communication reliability are becoming more and more prominent. The lack of wireless spectrum resources seriously restricts the improvement of transmission rate and communication reliability. Therefore, the key to improving network transmission rate and communication quality is to improve the effective utilization of spectrum. Among them, the multiple-input multiple-output (Multiple-Input Multiple-Output, MIMO) technology is regarded as an effective means to improve frequency utilization because of its great potential in improving data transmission rate and transmission reliability. In addition, the cooperative communication technol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W40/02H04L1/02H04B7/02H04L1/00
Inventor 宋清洋周厉宁李勋丛笑竹
Owner NORTHEASTERN UNIV
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