Multi user diversity for enhanced spectral efficiency in LTE-A

A good scheduler must respect requirements fixed by the 3GPP. Spectral efficiency may be assured by assigning each RB to the user that is predictable to exploit it at the best. The spectral efficiency guarantee may maximize the cell capacity. Similarly, assuring others requirements, which are fairness, computational complexity, cell-edge coverage, QoS provisioning, and energy savings can be achieved at the cost of reducing the overall cell capacity. Many scheduling strategies were proposed with the aim of finding a trade-off among the system spectral efficiency and all other LTE Advanced requirements. Nevertheless, this requirement steel not satisfied, especially with the continuous growth of connected devices and requirements.