Method for implementing partner selection and collaboration transmission combining position information

A technology of location information and cooperative transmission, applied in transmission systems, transmission monitoring, digital transmission systems, etc., can solve the problems of not being able to leave location information, no location information, etc.

Inactive Publication Date: 2009-01-28
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0014] However, for wireless networks, monitoring information without location information is meaningless, and the same is true for partner selection in cooperative communication systems. The strategy of partner selection cannot be s

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  • Method for implementing partner selection and collaboration transmission combining position information
  • Method for implementing partner selection and collaboration transmission combining position information
  • Method for implementing partner selection and collaboration transmission combining position information

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Embodiment Construction

[0072] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0073] The present invention is a realization method of partner selection and cooperative transmission combined with location information, which directly uses the cooperative positioning technology of the cooperative communication system to obtain the location information of each node without additional positioning equipment; and then according to the large-scale information transmission In the case of fading, a partner selection strategy is proposed: the source first calculates the distance between itself and each candidate relay node, and then combines the previously obtained position information of each candidate relay node and the distance between these candidate relay nodes and the base station. Distance information, the source respectively adds the distance b...

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Abstract

The invention provides a method for realizing partner selection and cooperative transmission combining with position information. The method is to obtain the position information of each node by directly using a cooperative positioning technology of a cooperative communication system and provide a partner selection strategy according to the large-scale fading condition of information transmission: an information source firstly calculates a distance between the information source and each candidate trunk node; the information source adds the distance between the information source and each trunk node and the distance between each trunk node and a base station by combining the obtained position information of each candidate trunk node and the distance information between the candidate trunk node and the base station; the information source selects a trunk node with the minimum total distance value of a trunk information channel as a cooperative partner of the information source to help the information source transmit information, after the total distance value of the trunk information channel of each trunk node is known, thereby realizing gain of space diversity reception, reducing path loss, and achieving the aims of reducing the bit error probability during transmitting, improving the signal quality and expanding the network coverage.

Description

technical field [0001] The present invention relates to a method for selecting a partner in a wireless network to realize cooperative transmission. Specifically, it relates to a method of firstly adopting a cooperative positioning method to obtain the position information of a network node, and then combining the position information to select a relay channel distance for the user. The shortest relay acts as a partner, thereby realizing the method for cooperative transmission, which belongs to the technical field of wireless communication. Background technique [0002] MIMO (Multiple-Input-Multiple-Output) technology uses multiple transmitting and receiving antennas to generate multiple independent parallel transmission channels in a wireless channel to simultaneously transmit multiple data information. This technology can realize high-speed and large-capacity information transmission on a limited spectrum, effectively improving spectrum utilization. Compared with the tradi...

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Application Information

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IPC IPC(8): H04L1/06H04L1/00H04L12/56H04B7/08H04B17/00H04B1/707H04B17/309
Inventor 王晓湘胡静张鸿涛沈振惠王玉龙
Owner BEIJING UNIV OF POSTS & TELECOMM
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