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Relay processing and power control joint optimization method for two-way relay network

A two-way relay, power control technology, applied in power management, wireless communication, electrical components, etc., can solve the problem of high implementation complexity, and achieve the effect of optimal energy efficiency

Inactive Publication Date: 2015-12-23
QINGDAO UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For decoding and forwarding, the relay node decodes the received signal first and then forwards it, which can get better performance, but the implementation complexity is higher

Method used

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  • Relay processing and power control joint optimization method for two-way relay network
  • Relay processing and power control joint optimization method for two-way relay network
  • Relay processing and power control joint optimization method for two-way relay network

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Embodiment 1

[0075] figure 2 The shown two-way relay network includes four user nodes and one relay node. Two user nodes exchange information through relay nodes. The relay node first obtains the relay processing matrix V through channel estimation, and obtains the transmit power of the user node and the amplification factor of the relay node through the constraints of the user SINR. The user communication process is divided into two stages: the first stage, the user node transmits information to the relay node, and the second stage, the relay node sends the amplified and processed information to the user node.

[0076] In this embodiment, the wireless communication system includes 4 source transceivers and a two-way relay station, each user node is equipped with an antenna, and the relay station is equipped with 4 antennas. Without loss of generality, it is assumed that the user 2i and user 2i-1 , i ∈ {1,2} are the two users transmitting information through the relay station. Using Q...

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Abstract

The invention provides a relay processing and power control joint optimization method for a two-way relay network. The relay processing and power control joint optimization method comprises: establishing a two-way relay network model, initializing user transmitting power Pk, establishing a relay processing matrix V of a relay node, updating the user transmitting power based on the relay processing matrix, calculating total transmitting power Ptotal, and repeating the steps, and according to the expression described in the specification, obtaining the optimal transmitting power and the optimal relay processing matrix of a user node. Joint design and optimization of relay processing and power control are achieved, on the condition of meeting a user signal to interference plus noise power ratio, the allocation of the transmitting power of the user node and the relay node is optimized, and the rely node processing matrix is jointly optimized, so that the energy efficiency of a two-way relay network system is optimal.

Description

technical field [0001] The invention relates to the technical field of relay networks, in particular to a joint optimization method for relay processing and power control used in bidirectional relay networks. Background technique [0002] Relay technology has been widely used in the fourth-generation wireless communication standards, which can increase the signal-to-noise ratio and improve the performance of users at the edge of the cell, thereby improving the performance of the entire network. [0003] The two-way relay network uses two time slots to establish two-way relay communication between two user nodes, which can provide twice the spectrum efficiency than the one-way relay network. In the first time slot, the user node sends a synchronization signal to the relay station; in the second time slot, the relay node processes the received signal and delivers the processed signal to all user nodes. [0004] A multiple-input multiple-output (MIMO) technology utilizes space...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/24H04W52/46
CPCH04W52/241H04W52/46
Inventor 江冬梅于海生卜庆凯
Owner QINGDAO UNIV
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