Patent ID: 8331426

Claim:
A method for improving throughput performance of a Space Division Multiple Access (SDMA) system, the method comprising: receiving, by a Base Transceiver Station (BTS), feedback information sent by a User Equipment (UE), wherein the feedback information comprises an identifier (ID) of a preferred beam of the UE in a pre-coding codebook, information related to a channel vector modulus value, and information about phase difference between a channel vector and the preferred beam of the UE; using, by the BTS, a set estimation algorithm to estimate sum throughputs supported by the SDMA system in each sending mode according to the received feedback information and information about space correlation between multiple antennas of the BTS; and selecting, by the BTS, a maximum sum throughput among the estimated sum throughputs, and using the sending mode corresponding to the maximum sum throughput to send data.