The invention relates to an automatic-adaptive multi-user
beam shaping method based on zero defection broadening, which comprises the following steps: a plurality of sets of
direction of arrival, i.e. a DOA angle combination is selected, and each set of
direction of arrival includes DOA angles of N users; the
orthogonalization is carried out after the transmission weights of the N users of each set is carried out by using a zero defection broadening arithmetic to obtain the final transmission weight of each user, the final transmission weights are stored as a
codebook, and N is the number of the users reusing the same resource, and is not smaller than 2; when the beam is shaped, the
base station receives an uplink
signal, and the DOA angle corresponding to the position of each user is estimated; the N users satisfying the restrictive condition of group division are put into one
user group; for each
user group, the closest DOA angle combination is matched from the DOA angle combination which is previously selected according to the DOA angles of the N users in the
user group, and the transmitting weights of the N users corresponding to the DOA angle combination in the
code book are used. The automatic-adaptive multi-user
beam shaping method enables at least two users to utilize the same time frequency and code resources and reuse
system resources.