A novel scheduling scheme based on MU-MIMO in TD-LTE uplink

The virtual MIMO (V-MIMO) and coordinated multipoint transmission (CoMP) are adopted by the LTE system to extend the uplink spectral efficiency. V-MIMO makes use of spatial multiplexing to increase system throughput while CoMP by means of mitigating inter cell interference (ICI) significantly achieve the same effect. In this paper, we present an orthogonality based proportional fair scheduling (OPF) scheme for virtual MIMO and CoMP in TD-LTE uplink. To evaluate the effectiveness of the OPF algorithm, three schemes are analyzed and compared: conventional single input multiple output (SIMO), V-MIMO and CoMP. Finally, we evaluate and compare the potential gain in spectral efficiency for the SIMO, V-MIMO and CoMP using LTE semi-dynamic system level simulator.