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Physical layer network code processing method

A network coding and processing method technology, applied in the field of physical layer network coding processing, can solve the problems of small overall network capacity, low bandwidth utilization, and many time slots.

Inactive Publication Date: 2009-07-08
BEIHANG UNIV
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Problems solved by technology

[0004] It can be seen that in the prior art wireless network information transmission methods, in order to avoid signal interference and improve the accuracy of information transmission, when multiple source nodes communicate with the same destination node, too many time slots are required to complete one information transmission , so that the overall network capacity is small and the bandwidth utilization rate is low

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Embodiment Construction

[0063] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0064] image 3 It is a schematic structural diagram of signal transmission in the physical layer network coding processing method of the present invention; Figure 4 It is a sequence diagram of signal transmission in the physical layer network coding processing method of the present invention. The technical solution of the embodiment of the present invention can be applied to the existing wireless network. Different from the signal transmission method in the prior art, the signal in the embodiment of the present invention is transmitted in a mixed manner, and the signal received by the destination node is multiple After the source node signal is mixed, the destination node can separate and process the received mixed signal to obtain the signal sent by the source node. specifically, Figure 5 It is a schematic flowc...

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Abstract

The invention discloses an encoding operation method for physical-layer networks. The method comprises the following steps: a first source node broadcasts a first signal and a second source node broadcasts a second signal; a relay node receives a relay mixed signal, wherein the mixed signal is the signal that reaches the relay node after the first signal and the second signal are mixed and subjected to noise addition; a target node receives a first mixed signal, wherein the first mixed signal is the signal that reaches the target node after the first signal and the second signal are mixed andsubjected to noise addition; the relay node broadcasts the relay mixed signal; the target node receives a second mixed signal, wherein the second mixed signal is the signal that reaches the target node after the relay mixed signal is subjected to noise addition; and the target node acquires estimated values of the first signal and the second signal according to the first mixed signal and the second mixed signal. The encoding operation method effectively utilizes the interference produced after the signal mixing, improves the network capacity, and increases the bandwidth utilization rate.

Description

technical field [0001] The invention relates to network coding technology, in particular to a physical layer network coding processing method, which belongs to the field of communication technology. Background technique [0002] Due to the mobility and portability of the nodes in the wireless network, the establishment of the wireless network is convenient and flexible, and the wireless network has been widely used. The link of the wireless network has broadcast characteristics, that is, a node in the wireless network can broadcast information to other nodes, and similarly, a node in the wireless network can also receive information from other nodes. Due to the broadcast characteristics of nodes, if multiple nodes in the network broadcast information at the same time, the multiple signals broadcast by multiple nodes will mix with each other in the free space of propagation, and the mixing of signals will cause Interference is generated, causing the receiving node to receive...

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Application Information

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IPC IPC(8): H04L1/00
Inventor 张军王福祥杜冰于杭弘
Owner BEIHANG UNIV
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