Optimized power allocation method reducing interruption rate in encoded collaboration communication

A technology of power optimization and cooperative communication, applied in the direction of preventing/detecting errors through diversity reception, sustainable communication technology, transmission control/equalization, etc., to achieve the effects of ensuring communication quality, reducing interruption rate, and saving power generation

Inactive Publication Date: 2009-03-25
XIDIAN UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that there is no power allocation scheme under the CC scheme at present, and propose a power optimization allocation method for reducin

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  • Optimized power allocation method reducing interruption rate in encoded collaboration communication
  • Optimized power allocation method reducing interruption rate in encoded collaboration communication
  • Optimized power allocation method reducing interruption rate in encoded collaboration communication

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Embodiment Construction

[0019] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. This embodiment is carried out on the premise of the technical solution of the present invention, and the detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.

[0020] figure 1 It is a diagram of the coding cooperative communication model based on power allocation adopted in the present invention. These include source nodes, relay nodes, and destination nodes. h sr 、h sd and h rd Respectively represent the channel fading coefficient from the source node to the relay node and the destination node, and from the relay node to the destination node. The information sent by the source node is encoded into x 1 and x 2 Two parts, the source node only sends x in it 1 , the relay node sends x 2 . In this system, the transmission rate is set to R=1 / 4b...

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Abstract

The invention discloses an optimal power allocation method for reducing the outage probability in the coding cooperation communication of the wireless communication field, and mainly solves the problem of higher outage probability in the system based on the prior average power allocation method. The optimal power method comprises the following steps: the channel statistical information of an original node to a relay node and a target node as well as the relay node to the target node are respectively estimated after the information from the original node and the relay node is received by the target node; subsequently, the lowest outage probability is taken as a target by the target node, an optimal power allocation coefficient is calculated based on an optimal power allocation formula according to the estimated channel statistical information, and the power allocation information is sent to the original node and the relay node by utilizing a feedback channel; the feedback information is received by the original node and the relay node which send the information at the allocated power respectively. The optimal power allocation method can remarkably reduce the outage probability of the coding cooperation communication, and ensure the lower complexity for the calculating method of the power allocation coefficient, therefore, the method can be used for reducing the outage probability of the coding cooperation communication system and ensuring the communication quality.

Description

technical field [0001] The invention relates to a power distribution method in the field of wireless communication, in particular to a power distribution method for reducing the interruption rate in coded cooperative communication, which is used in a coded cooperative communication system. Background technique [0002] The future wireless communication system needs to provide more high-speed multimedia services and data services, so it is necessary to adopt new technologies to improve the information transmission rate. Multipath fading in wireless communication is an important factor affecting communication transmission rate and reliability, how to solve the impact of multipath effect becomes the key to improve communication quality. Although the multiple-input multiple-output MIMO technology can improve the performance of the system, due to the limitation of the volume and cost of the mobile terminal, it becomes very difficult to install multiple antennas on it, which limit...

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Application Information

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IPC IPC(8): H04L1/00H04L1/06H04L25/02H04B7/005
CPCY02D30/70
Inventor 韩春雷葛建华王勇宫丰奎李靖高明张南
Owner XIDIAN UNIV
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