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Wireless transmission method adopting distributed MIMO and network coding technique

A technology of network coding and wireless transmission, which is applied in the field of wireless transmission using distributed MIMO and network coding technology, can solve problems such as waste of network resources, and achieve the effect of reducing the number of antennas

Inactive Publication Date: 2008-12-03
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In traditional networks, nodes acting as relays can only replicate, amplify and forward received signals, which is sometimes a waste of network resources

Method used

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  • Wireless transmission method adopting distributed MIMO and network coding technique
  • Wireless transmission method adopting distributed MIMO and network coding technique

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Experimental program
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Embodiment Construction

[0021] The present invention is applicable to the scenario where multiple source nodes communicate with multiple sink nodes in a wireless environment. Such as figure 1 As shown, the source node A will send a1 and a2 to the sink nodes C and D, and the source node B will send b1 and b2 to the sink nodes C and D. Both C and D are not within the transmission range of A and B, and relay nodes M1, M2, and M3 are required to relay information. M1 and M2 are within the transmission range of A, M2 and M3 are within the transmission range of node B, C is within the transmission range of M1 and M2, and D is within the transmission range of M2 and M3. M2 is within the transmission range of M1 and M3, but M1 and M3 are not within the transmission range of each other. Assume that both A and B use single antennas to send information, relay nodes M1, M2, M3 all use two antennas to receive information, and sink nodes C and D use four antennas to receive information. It is also assumed that ...

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Abstract

The invention relates to a wireless transmission method which adopts distributed MIMO and network coding technology. The wireless data transmission usually cannot reach the ideal rate due to the limited emissive power, frequency spectra resource and so on. The specific steps of the method provided by the invention include transmission of source information, data reception and decoding at a trunk node, coding and data transmission at the trunk node, diversity reception and decoding at an information destination node. When a plurality of information source nodes all need to multicast the information to the information destination node, the information transmission to the trunk node is firstly carried out by the distributed MIMO mechanism, the trunk node adopts the network coding to carry out the distributed time-space coding. The communication between the trunk node and the information destination node also adopts the distributed MIMO mechanism. The method combines the MIMO mechanism with the network coding, which realizes the information transmission within a shorter time slot, also the antenna amount is reduced for the same transmission rate by utilizing the advantages of the network coding in the multicast.

Description

technical field [0001] The invention belongs to the field of wireless network transmission, and relates to a wireless transmission method using a network coding technology and a distributed MIMO mechanism at the same time. The network coding technology enables more effective use of network bandwidth and reduces the number of antennas required by wireless nodes to meet the transmission rate requirements. Background technique [0002] In the past ten years, personal communications and mobile wireless communications have developed extremely rapidly. Wireless communication makes data transmission more convenient and faster. As long as it is within the coverage area of ​​the network signal, data transmission can be performed anytime and anywhere, eliminating the geographical restrictions caused by the use of wired networks. With the development of wireless communication technology, wireless communication plays an increasingly important role in the social economy and people's dai...

Claims

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Application Information

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IPC IPC(8): H04L1/06H04B7/06
Inventor 陈惠芳王政谢磊赵民建王匡
Owner ZHEJIANG UNIV