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A bidirectional wireless relay transmission method suitable for multiple relay nodes

A relay node, wireless relay technology, applied in radio transmission systems, transmission systems, wireless communications, etc., can solve the problems of reducing transmission performance, unable to correct transmission errors, etc., to ensure the effect of correct decoding and reception

Active Publication Date: 2022-03-08
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0007] Aiming at the defects that the error control mechanism adopted by the existing two-way wireless relay transmission technology based on DF and DNC has multiple retransmissions to reduce transmission performance and may not be able to correct transmission errors, the present invention proposes an applicable method based on DF and DNC technology Two-way wireless relay transmission method based on any number of n relay nodes (wherein n≥2)

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  • A bidirectional wireless relay transmission method suitable for multiple relay nodes
  • A bidirectional wireless relay transmission method suitable for multiple relay nodes
  • A bidirectional wireless relay transmission method suitable for multiple relay nodes

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Embodiment Construction

[0025] The present invention will be described in detail below in conjunction with the accompanying drawings and simulation examples to prove the practicability of the present invention.

[0026] For the convenience of analysis, it is assumed that the length of the data packets sent by the two end nodes (ie nodes 0 and n+1) is fixed at 8472 bits, and the transmission rate of the wireless channel between any two adjacent nodes is fixed at 11 Mbit / s.

[0027] figure 1 A schematic diagram of a two-way relay transmission network composed of 2 terminal nodes and n relay nodes considered in the present invention. In particular, when n=3, figure 1 The two-way relay transmission network shown is as follows figure 2 The 3-relay two-way wireless transmission network is shown. figure 2 , shows a 3-relay two-way wireless transmission network in the first 11 time slots, that is, slots 0, 1, ..., 10, and gives an example of a possible single transmission error spreading throughout the ...

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Abstract

The invention belongs to the technical field of wireless communication, and in particular relates to a two-way wireless relay transmission method suitable for multiple relay nodes. The method of the present invention mainly proposes a novel two-way wireless relay network transmission scheme based on decoding and forwarding (Decode-and-Forward, DF) and network coding (Network Coding, NC) technology. The advantage of the present invention is that it can achieve the maximum spectral efficiency based on decoding and forwarding (Decode-and-Forward, DF) technology, and proposes an error control scheme without retransmission to avoid network coding (Network Coding, NC) technology based The resulting error diffusion problem results in an effective transmission throughput superior to existing schemes.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a two-way wireless relay transmission method suitable for multiple relay nodes. Background technique [0002] In order to achieve peer-to-peer wireless transmission and exchange data information of interest to each other under the constraints of limited transmit power of nodes, two wireless terminal nodes that are far away or experience severe channel fading can rely on sequential data from multiple relay nodes. Forwarding to complete two-way communication. At this point, the combination of the two terminal nodes and all the relay nodes constitutes a two-way wireless relay transmission network. [0003] Existing relay technologies such as Amplify-and-Forward (AF) and Decode-and-Forward (DF) can be applied to each relay node of a two-way wireless relay transmission network. On the other hand, the two-way wireless relay transmission technology based on ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/155H04W28/14H04W72/04
CPCH04B7/15521H04B7/15542H04W28/14H04W72/0446H04L49/90H04B7/155
Inventor 谭雪松张兴宇
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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