Single relay transmission method, device and system

Abstract

The invention discloses a signal relay transmission method, which is used in a multi-antenna relay system, and comprises that: a relay node receives a signal transmitted by a former-hop node, performs receiving filtering treatment and generates N first signals, wherein N is the number of the transmitting antennae of the former-hop node or the number of the data streams transmitted by the former-hop node; the relay node maps the N first signals into corresponding N second signals, wherein each second signal is a linear weighted combination of the N first signals, and the corresponding weighting coefficients are determined according to the current state information of a first channel between the relay node and the former-hop node, and the current state information of a second channel between the relay node and a next-hop node; and the relay node performs the transmission pretreatment of the N second signals and amplifies the N second signals and forwards the N second signals to the next-hop node. The invention also provides a corresponding relay node device and a multi-antenna communication system. When the method, the device and the system of the invention are used, the problem of big noise of the signal relay in an AF forwarding mode is solved, and the overall performance of the system is improved.

Description

technical field [0001] The present invention relates to wireless communication, in particular to a signal relay transmission method, a corresponding relay node device and a multi-antenna relay system. Background technique [0002] With the application of new mobile technologies, the number of global mobile communication users and the traffic volume of mobile data continue to grow. While this growth brings benefits, it also brings problems that need to be solved for efficient system operation: increasing system capacity and improving spectrum resources utilization rate. Therefore, how to use limited spectrum resources to provide more comprehensive services for more users has become one of the important issues concerned at this stage. In the traditional cellular system, spectrum resources are scarce, the needs of cell edge users cannot be met, and the data transmission rate is low. [0003] In order to solve the above-mentioned problems faced by the mobile communication syst...

AI Technical Summary

Problems solved by technology

[0008] The embodiment of the present invention provides a signal relay transmission method to solve the problem of noise amplification in signal relay using AF forwarding mode

[0009] The embodiment of the present invention also provides a corresponding relay node device and a multi-antenna system to solve the problem of noise amplification when signal relay adopts AF forwarding mode

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