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A method for controlling the transmission power of nodes in a full-duplex two-way relay system

A relay node, transmit power technology, applied in the field of wireless communication, can solve the problem of low energy consumption of full-duplex cooperative diversity system, and achieve the effect of energy efficiency performance advantage and small transmit power

Active Publication Date: 2022-06-24
NANTONG UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It should be noted that for energy efficiency issues, half-duplex systems are more considered in the industry, and there are relatively few studies on energy consumption of full-duplex cooperative diversity systems.

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  • A method for controlling the transmission power of nodes in a full-duplex two-way relay system
  • A method for controlling the transmission power of nodes in a full-duplex two-way relay system
  • A method for controlling the transmission power of nodes in a full-duplex two-way relay system

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Embodiment Construction

[0076] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0077] see figure 1 The present invention adopts the superposition coding full-duplex two-way relay system node transmission power control method. The relay system is provided with three nodes, namely two source nodes and one relay node, all of which work in frequency non-selective Rayleigh fading. Full-duplex mode in channel environment. Among them, S 1 and S 2 is the source node, R is the decoding and forwarding relay node located between the source nodes, and each node in the system can obtain accurate channel state information through channel estimation. Using the channel knowledge and according to the data rate requirements of the source node, the transmit power of the source node and relay node transmitters and the superposition coding power allocation factor at the relay node are dynamically adjusted, so as to meet the system outage pr...

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Abstract

The invention discloses a method for controlling the transmission power of nodes in a full-duplex two-way relay system, which is suitable for decoding and forwarding full-duplex two-way relay systems using superposition coding. As constraints, the goal is to minimize the node transmit power sum; using channel knowledge, and according to the data rate requirements of the source node, the transmit power of the source node and the relay node transmitter and the superposition coding power allocation at the relay node Factors are dynamically adjusted to minimize the node transmit power sum under the condition of meeting the system QoS requirements.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method for controlling the transmission power of a node of a full-duplex two-way relay system using superposition coding, which is suitable for a full-duplex two-way relay system based on a decoding and forwarding mechanism. Background technique [0002] As a new technology, cooperative diversity can improve the coverage area of ​​wireless networks and resist the adverse effects of channel fading on wireless signal transmission through cooperation between users, and has been highly valued by academia and industry. A traditional three-node cooperative diversity system includes two source nodes and a relay node. Due to factors such as communication distance or channel fading, the two source nodes must rely on the relay node to communicate with each other. That is, The so-called two-way relay system. In a traditional three-node cooperative diversity system, the rel...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/26H04W52/18H04W52/46H04W72/04H04W72/08H04W72/54
CPCH04W52/265H04W52/18H04W52/267H04W52/46H04W72/0473H04W72/543
Inventor 吉晓东
Owner NANTONG UNIVERSITY