The invention discloses a pre-coding method, based on safety speed optimization, in multi-base-
station cooperation scenes, particularly relates to a pre-coding
information processing method, based on safety speed optimization, in multi-base-
station cooperation scenes, and relates to the technical field of
wireless communication pre-coding. The method includes: each
base station transmits a training sequence to a user, and a
transceiver of the user and an eavesdropper performs channel
estimation according to the received signals so as to obtain the channel information between each
base station and the user and the channel information between each
base station and the eavesdropper; a
central processing unit calculates the pre-coding matrixes of all base stations according to the obtained channel information, and feeds each pre-coding matrix to the corresponding base
station; each base station pre-codes the same
signal and transmits the pre-coded
signal to the user; the user and the eavesdropper detect the received signals and estimate the transmitted signals. By the method, safety speed of the maximum systems of the pre-coding matrixes of the base stations are obtained simultaneously, the defect that traditional iteration algorithms cannot guarantee that the obtained solution is the optimal global solution, and
system safety speed can be increased effectively.