Method for implementing partner selection and collaboration transmission combining position information

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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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 separated from the acquisition of location information, and for actual communication systems, large-scale fading It is also inevitable, and the resulting path loss is also an important factor, which should be taken into consideration

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