Multiuser scheduling scheme and power allocation algorithm for Multiuser Turbo-BLAST system

Multiuser Turbo-BLAST system model based on zero-forcing principle is presented and the user scheduling algorithm and power allocation scheme are proposed in this paper. At the transmitter, the zero-forcing beam-forming technique is adopted for user multiplexing. When there are a lot of active users, the proposed user scheduling algorithm is proposed to pick the proper user subset and the adaptive power allocation scheme is presented to allocate appropriate power for the selected users. Simulation results show that the multiuser multiplexing is realized through zero-forcing beam-forming technique, the capacity can be improved by user scheduling and adaptive power allocating.