Method for assisting multi-carrier access link of wireless forward-transmission cloud access network by IRS (Inter-Reference Signal)

The invention discloses a multi-carrier link access method for an IRS (Inter-Reference Signal)-assisted wireless forward-transmission cloud access network, which comprises the following steps of: constructing a multi-carrier OFDMA (Orthogonal Frequency Division Multiple Access) multi-user communication system of an intelligent reflecting surface IRS-assisted cloud access network (C-RAN) access link, and realizing communication between a BBU (Base Band Unit) and a plurality of users through an RRH (Radio Remote Head) in the system, the RRH uses OFDMA (Orthogonal Frequency Division Multiple Access) to cooperatively transmit to the user under the assistance of the IRS A wireless forward link and IRS-assisted OFDMA link transmission are jointly designed, so that the weighted sum rate of downlink users is maximized; according to the invention, the transmission performance of the communication system can be obviously improved under the condition that the forward link capacity is limited. 本发明公开了一种IRS辅助无线前传云接入网多载波接入链