An Overview on Resource Allocation Techniques for Multi-User MIMO Systems

摘要: Remarkable research activities and major advances have been occurred over the past decade in multiuser multiple-input multiple-output (MU-MIMO) systems. Several transmission technologies precoding techniques developed order to exploit spatial dimension so that simultaneous of independent data streams reuse same radio resources. The achievable performance such heavily depends on channel characteristics selected users, amount knowledge, how efficiently interference is mitigated. In systems where total number receivers larger than transmit antennas, user selection becomes a key approach benefit from diversity achieve full multiplexing gain. overall MU-MIMO complex joint multi-objective optimization problem since many variables parameters be optimized, including signaling, rate power allocation, technique. objective this literature survey provide comprehensive overview various methodologies used aforementioned task downlink communication