Power optimization distribution method based on symbol error rate in increment dual-relay system

A technology of symbol error rate and double relay, applied in advanced technology, electrical components, climate sustainability, etc., can solve problems such as high symbol error rate of relay nodes, reduce system transmission information rate, etc., to improve accuracy and performance , speed up the transmission rate, reduce the effect of symbol error rate

Active Publication Date: 2016-07-13
ZHEJIANG NORMAL UNIVERSITY
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Problems solved by technology

[0004] However, such relay protocols and systems have the following problems: 1. When the channel quality from the source node to the relay node is poor, the symbol error rate of the relay node is very high
In this case, the cooperative method is still adopted, which will reduce the rate of system transmission information

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  • Power optimization distribution method based on symbol error rate in increment dual-relay system
  • Power optimization distribution method based on symbol error rate in increment dual-relay system
  • Power optimization distribution method based on symbol error rate in increment dual-relay system

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Embodiment Construction

[0101] The present invention will be further described below in conjunction with the accompanying drawings. attached figure 2 It is a schematic diagram of the proposed system and protocol. In the proposed protocol, only when an error occurs in the decoding from the source node to the destination node, the two relay nodes participate in the cooperation and forward the signal at the same time; otherwise, the source node continues to send the signal . Therefore, the line from the relay node to the destination node in the figure is a dashed line. The communication protocol under the proposed incremental double-relay system is specifically described as follows: in the first time slot, the source node transmits a signal to the destination node, and at the same time, R1 and R2 can also receive the signal transmitted by the source node, and the destination node according to The received signal quality judges whether the cooperation of the relay node is needed. If the decoding of t...

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Abstract

The present invention provides an increment dual-relay system in cooperation communication and a transmission protocol thereof. Compared with a system having one relay node in the prior art, the increment dual-relay system selects two relay nodes to improve the reliability of the system, and the increment dual-relay system also improve the transmission rate of the system compared with a system having more than three relay nodes. The present invention provides an expression having small approximate calculated amount of an error rate for the system power optimization distribution. A binary system evolution method is used for searching an optimized solution. After the optimized solution is worked out, the optimized solution is employed to perform the system power optimization distribution to further improve the performance of the system and the protocol. The experiment results shows the method provided by the invention is able to allow the performance of the symbol error rate to be greatly better than the best cooperation communication system and protocol after the power optimization distribution in the prior art, and is able to greatly reduce the symbol error rate of the system and the protocol.

Description

technical field [0001] The present invention relates to the technical field of communication, in particular to the technical field of cooperative communication. In this neighborhood, the present invention proposes a method for optimizing the distribution of transmit power between the source node and the two relay nodes with the goal of minimizing the symbol error rate in an incremental double-relay system. Background technique [0002] In the traditional cooperative communication, its system model is as attached figure 1 shown. At this point, there is a source node, a destination node, and a relay node participating in cooperative communication. In the first time slot, the source node transmits information to the destination node and the relay node. In the second time slot, the relay node transmits information to the destination node, and the destination node performs maximum ratio combination according to the signals received in the first time slot and the second time sl...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04
CPCH04W72/0473Y02D30/70
Inventor 端木春江王振宇
Owner ZHEJIANG NORMAL UNIVERSITY
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